<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2020 Workiva-->
<!--r:e0ed118d-4f9a-43d4-81da-f969b1b917d4,g:742a85e0-4a99-4daa-aee7-14942aa6e4b5-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://viciproperties.com/role/CoverPage" xlink:type="simple" xlink:href="vici-20200930.xsd#CoverPage"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CoverPage" xlink:type="extended" id="ie940356f1bd54c0b840c1c8b221c9c6b_CoverPage"/>
  <link:roleRef roleURI="http://viciproperties.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="vici-20200930.xsd#CONSOLIDATEDBALANCESHEETS"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="extended" id="iffe70fbdbedf4ae4b81c59606de05f55_CONSOLIDATEDBALANCESHEETS">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_932dc3fa-6d67-476e-aa38-06044807f926" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_747a3eb0-ada7-40d4-a48e-1a2bde6f61d8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_932dc3fa-6d67-476e-aa38-06044807f926" xlink:to="loc_us-gaap_AssetsAbstract_747a3eb0-ada7-40d4-a48e-1a2bde6f61d8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyNetAbstract_052384d5-0e71-4262-8712-1b8302084416" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateInvestmentPropertyNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_747a3eb0-ada7-40d4-a48e-1a2bde6f61d8" xlink:to="loc_us-gaap_RealEstateInvestmentPropertyNetAbstract_052384d5-0e71-4262-8712-1b8302084416" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentInLease_7ef54eec-ce57-48ab-8959-6cff74f484ff" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetInvestmentInLease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyNetAbstract_052384d5-0e71-4262-8712-1b8302084416" xlink:to="loc_us-gaap_NetInvestmentInLease_7ef54eec-ce57-48ab-8959-6cff74f484ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyAtCost_00cd9736-9dd5-415e-8e20-a20cf3f966a2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateInvestmentPropertyAtCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyNetAbstract_052384d5-0e71-4262-8712-1b8302084416" xlink:to="loc_us-gaap_RealEstateInvestmentPropertyAtCost_00cd9736-9dd5-415e-8e20-a20cf3f966a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_8b699d07-e2a1-4f7b-ac57-435d2ceb3488" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyNetAbstract_052384d5-0e71-4262-8712-1b8302084416" xlink:to="loc_us-gaap_NotesReceivableNet_8b699d07-e2a1-4f7b-ac57-435d2ceb3488" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandAvailableForDevelopment_dbd697b6-390c-4d24-b5d3-a0f8790f4ab3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LandAvailableForDevelopment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyNetAbstract_052384d5-0e71-4262-8712-1b8302084416" xlink:to="loc_us-gaap_LandAvailableForDevelopment_dbd697b6-390c-4d24-b5d3-a0f8790f4ab3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_a6e4a5bd-86ed-460d-8420-b51eab05c48c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_747a3eb0-ada7-40d4-a48e-1a2bde6f61d8" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_a6e4a5bd-86ed-460d-8420-b51eab05c48c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestments_b968bf54-0a0b-49b6-8ff1-5a660fab20d6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_747a3eb0-ada7-40d4-a48e-1a2bde6f61d8" xlink:to="loc_us-gaap_ShortTermInvestments_b968bf54-0a0b-49b6-8ff1-5a660fab20d6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_285cd5ca-b403-4b5c-916b-c105cbea5b2c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_747a3eb0-ada7-40d4-a48e-1a2bde6f61d8" xlink:to="loc_us-gaap_OtherAssets_285cd5ca-b403-4b5c-916b-c105cbea5b2c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_18b41bf6-321a-41af-b053-7d8debfaf69f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_747a3eb0-ada7-40d4-a48e-1a2bde6f61d8" xlink:to="loc_us-gaap_Assets_18b41bf6-321a-41af-b053-7d8debfaf69f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_02c8f88e-82dd-4219-b78d-7fe984f26a56" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_932dc3fa-6d67-476e-aa38-06044807f926" xlink:to="loc_us-gaap_LiabilitiesAbstract_02c8f88e-82dd-4219-b78d-7fe984f26a56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_f5f029d5-f4f7-4d22-a9f9-0e85cc3a7f1c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_02c8f88e-82dd-4219-b78d-7fe984f26a56" xlink:to="loc_us-gaap_LongTermDebt_f5f029d5-f4f7-4d22-a9f9-0e85cc3a7f1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrentAndNoncurrent_d3d7633e-41e4-431d-b32f-3f49c570b15a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_02c8f88e-82dd-4219-b78d-7fe984f26a56" xlink:to="loc_us-gaap_InterestPayableCurrentAndNoncurrent_d3d7633e-41e4-431d-b32f-3f49c570b15a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredLongTermLiabilityCharges_6c75ac8a-be60-4357-af3c-3e5d9c5627d7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DeferredLongTermLiabilityCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_02c8f88e-82dd-4219-b78d-7fe984f26a56" xlink:to="loc_us-gaap_DeferredLongTermLiabilityCharges_6c75ac8a-be60-4357-af3c-3e5d9c5627d7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_f71eaf9a-7ece-4a4e-9673-fcf8c2bb826c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_02c8f88e-82dd-4219-b78d-7fe984f26a56" xlink:to="loc_us-gaap_ContractWithCustomerLiability_f71eaf9a-7ece-4a4e-9673-fcf8c2bb826c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_a8d79fed-4409-4293-8801-6a1e4913720f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_02c8f88e-82dd-4219-b78d-7fe984f26a56" xlink:to="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_a8d79fed-4409-4293-8801-6a1e4913720f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilities_6b9c2629-fd5e-473a-b096-12c818a6feb9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_02c8f88e-82dd-4219-b78d-7fe984f26a56" xlink:to="loc_us-gaap_OtherLiabilities_6b9c2629-fd5e-473a-b096-12c818a6feb9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_b166ce33-2cbd-43a1-a660-170b506ce51a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_02c8f88e-82dd-4219-b78d-7fe984f26a56" xlink:to="loc_us-gaap_Liabilities_b166ce33-2cbd-43a1-a660-170b506ce51a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_99dea4bf-b8b2-4422-9553-74a45bc1863f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_932dc3fa-6d67-476e-aa38-06044807f926" xlink:to="loc_us-gaap_CommitmentsAndContingencies_99dea4bf-b8b2-4422-9553-74a45bc1863f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_4928e356-fea3-450d-bc1a-a8542009d9d3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_932dc3fa-6d67-476e-aa38-06044807f926" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_4928e356-fea3-450d-bc1a-a8542009d9d3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_596366fe-ab1a-42ae-8cef-d19c8f32e98c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_4928e356-fea3-450d-bc1a-a8542009d9d3" xlink:to="loc_us-gaap_CommonStockValue_596366fe-ab1a-42ae-8cef-d19c8f32e98c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_094fcd01-61e3-4efd-8c27-994c0c0437bd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_4928e356-fea3-450d-bc1a-a8542009d9d3" xlink:to="loc_us-gaap_PreferredStockValue_094fcd01-61e3-4efd-8c27-994c0c0437bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_1b9c9c22-2998-48fe-a98a-25b48081d262" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_4928e356-fea3-450d-bc1a-a8542009d9d3" xlink:to="loc_us-gaap_AdditionalPaidInCapital_1b9c9c22-2998-48fe-a98a-25b48081d262" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_e985ffda-b074-4e88-a359-2056a8f219fd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_4928e356-fea3-450d-bc1a-a8542009d9d3" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_e985ffda-b074-4e88-a359-2056a8f219fd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_6052cb75-dc87-4795-bcd8-a0308058f43f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_4928e356-fea3-450d-bc1a-a8542009d9d3" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_6052cb75-dc87-4795-bcd8-a0308058f43f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_e4737db5-7ae6-4623-9c14-0ad8283d91a8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_4928e356-fea3-450d-bc1a-a8542009d9d3" xlink:to="loc_us-gaap_StockholdersEquity_e4737db5-7ae6-4623-9c14-0ad8283d91a8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_6ee2d40a-b2bd-4511-9ef1-19c75861a377" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_4928e356-fea3-450d-bc1a-a8542009d9d3" xlink:to="loc_us-gaap_MinorityInterest_6ee2d40a-b2bd-4511-9ef1-19c75861a377" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_901364fe-8489-4be2-99d1-6dd2c0c67023" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_4928e356-fea3-450d-bc1a-a8542009d9d3" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_901364fe-8489-4be2-99d1-6dd2c0c67023" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_a771b8a1-12d0-4f80-b913-e91d14cc0103" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_932dc3fa-6d67-476e-aa38-06044807f926" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_a771b8a1-12d0-4f80-b913-e91d14cc0103" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_3a8067ab-3e6e-483d-954a-2134e912bb3b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_932dc3fa-6d67-476e-aa38-06044807f926" xlink:to="loc_us-gaap_StatementTable_3a8067ab-3e6e-483d-954a-2134e912bb3b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseTypeAxis_57257d17-b9d7-466f-afbc-1322ac89ae05" xlink:href="vici-20200930.xsd#vici_LeaseTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_3a8067ab-3e6e-483d-954a-2134e912bb3b" xlink:to="loc_vici_LeaseTypeAxis_57257d17-b9d7-466f-afbc-1322ac89ae05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseTypeDomain_57257d17-b9d7-466f-afbc-1322ac89ae05_default" xlink:href="vici-20200930.xsd#vici_LeaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_vici_LeaseTypeAxis_57257d17-b9d7-466f-afbc-1322ac89ae05" xlink:to="loc_vici_LeaseTypeDomain_57257d17-b9d7-466f-afbc-1322ac89ae05_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseTypeDomain_89f6e4ce-b498-48de-b304-08f3325e9f9a" xlink:href="vici-20200930.xsd#vici_LeaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_vici_LeaseTypeAxis_57257d17-b9d7-466f-afbc-1322ac89ae05" xlink:to="loc_vici_LeaseTypeDomain_89f6e4ce-b498-48de-b304-08f3325e9f9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DirectFinancingAndSalesTypeMember_8439d1a5-bcb9-41e5-8745-e75e9e1f3c2a" xlink:href="vici-20200930.xsd#vici_DirectFinancingAndSalesTypeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseTypeDomain_89f6e4ce-b498-48de-b304-08f3325e9f9a" xlink:to="loc_vici_DirectFinancingAndSalesTypeMember_8439d1a5-bcb9-41e5-8745-e75e9e1f3c2a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_OperatingLeaseMember_49ee386d-95c3-4076-8a60-336d1cb35403" xlink:href="vici-20200930.xsd#vici_OperatingLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseTypeDomain_89f6e4ce-b498-48de-b304-08f3325e9f9a" xlink:to="loc_vici_OperatingLeaseMember_49ee386d-95c3-4076-8a60-336d1cb35403" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_9e1b2051-0d5a-49fc-be9b-ab1eec12a0e2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_3a8067ab-3e6e-483d-954a-2134e912bb3b" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_9e1b2051-0d5a-49fc-be9b-ab1eec12a0e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_9e1b2051-0d5a-49fc-be9b-ab1eec12a0e2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_9e1b2051-0d5a-49fc-be9b-ab1eec12a0e2" xlink:to="loc_us-gaap_ReceivableTypeDomain_9e1b2051-0d5a-49fc-be9b-ab1eec12a0e2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_af33f355-e9d4-4d41-88bf-b1abac4e15d9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_9e1b2051-0d5a-49fc-be9b-ab1eec12a0e2" xlink:to="loc_us-gaap_ReceivableTypeDomain_af33f355-e9d4-4d41-88bf-b1abac4e15d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceReceivablesMember_56b48242-1b86-4ae5-bee9-01811c11e0c5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_af33f355-e9d4-4d41-88bf-b1abac4e15d9" xlink:to="loc_us-gaap_FinanceReceivablesMember_56b48242-1b86-4ae5-bee9-01811c11e0c5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableMember_04812479-616c-4baa-8286-8d8090b1d831" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_af33f355-e9d4-4d41-88bf-b1abac4e15d9" xlink:to="loc_us-gaap_LoansReceivableMember_04812479-616c-4baa-8286-8d8090b1d831" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/CONSOLIDATEDBALANCESHEETSParenthetical" xlink:type="simple" xlink:href="vici-20200930.xsd#CONSOLIDATEDBALANCESHEETSParenthetical"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CONSOLIDATEDBALANCESHEETSParenthetical" xlink:type="extended" id="iafe2cf978ee848b088f4d714c60aee5a_CONSOLIDATEDBALANCESHEETSParenthetical">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_6a71494b-af94-46a6-bd1b-0ecf637845f1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_2a7a4862-232f-45d7-8b7a-8ff779c508b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6a71494b-af94-46a6-bd1b-0ecf637845f1" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_2a7a4862-232f-45d7-8b7a-8ff779c508b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_fb9dd306-aa5e-41a8-9a1f-978158752ad7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6a71494b-af94-46a6-bd1b-0ecf637845f1" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_fb9dd306-aa5e-41a8-9a1f-978158752ad7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_02659348-5df9-44a4-be97-66877a7c2337" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6a71494b-af94-46a6-bd1b-0ecf637845f1" xlink:to="loc_us-gaap_CommonStockSharesIssued_02659348-5df9-44a4-be97-66877a7c2337" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_ac876f7f-cbe6-4fc6-a09a-837b1ab39a2a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6a71494b-af94-46a6-bd1b-0ecf637845f1" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_ac876f7f-cbe6-4fc6-a09a-837b1ab39a2a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_9e66efa9-3039-43ae-966c-f15e11dc6d63" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6a71494b-af94-46a6-bd1b-0ecf637845f1" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_9e66efa9-3039-43ae-966c-f15e11dc6d63" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_51f369d7-e243-4afe-b685-9980200bd69e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6a71494b-af94-46a6-bd1b-0ecf637845f1" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_51f369d7-e243-4afe-b685-9980200bd69e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_ed4c7954-d4a4-428f-baf2-426c0a4cd0e3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6a71494b-af94-46a6-bd1b-0ecf637845f1" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_ed4c7954-d4a4-428f-baf2-426c0a4cd0e3" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLoss_e568dace-ef4e-40b7-9e1b-96c8c2f93b8a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetInvestmentInLeaseAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6a71494b-af94-46a6-bd1b-0ecf637845f1" xlink:to="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLoss_e568dace-ef4e-40b7-9e1b-96c8c2f93b8a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_6210ecd1-ea1b-4d40-a74a-983bd0999734" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6a71494b-af94-46a6-bd1b-0ecf637845f1" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_6210ecd1-ea1b-4d40-a74a-983bd0999734" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_OtherAssetsSalesTypeSubleasesAllowanceForCreditLosses_c2969eb7-ba2c-4b3d-9596-3f0b7cb339e2" xlink:href="vici-20200930.xsd#vici_OtherAssetsSalesTypeSubleasesAllowanceForCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_6a71494b-af94-46a6-bd1b-0ecf637845f1" xlink:to="loc_vici_OtherAssetsSalesTypeSubleasesAllowanceForCreditLosses_c2969eb7-ba2c-4b3d-9596-3f0b7cb339e2" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_0dddbdce-129b-4685-830c-2a266accaf61" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_6a71494b-af94-46a6-bd1b-0ecf637845f1" xlink:to="loc_us-gaap_StatementTable_0dddbdce-129b-4685-830c-2a266accaf61" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_f9ea057e-6924-4eec-b0cb-bef18295e2cc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_0dddbdce-129b-4685-830c-2a266accaf61" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_f9ea057e-6924-4eec-b0cb-bef18295e2cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_f9ea057e-6924-4eec-b0cb-bef18295e2cc_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_f9ea057e-6924-4eec-b0cb-bef18295e2cc" xlink:to="loc_us-gaap_ReceivableTypeDomain_f9ea057e-6924-4eec-b0cb-bef18295e2cc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_3c909e06-a048-444c-bdac-f60e14776bcd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_f9ea057e-6924-4eec-b0cb-bef18295e2cc" xlink:to="loc_us-gaap_ReceivableTypeDomain_3c909e06-a048-444c-bdac-f60e14776bcd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceReceivablesMember_a19e60cf-b273-425d-8b72-d27a6ce5b420" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_3c909e06-a048-444c-bdac-f60e14776bcd" xlink:to="loc_us-gaap_FinanceReceivablesMember_a19e60cf-b273-425d-8b72-d27a6ce5b420" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableMember_4432bc19-5aea-449c-8713-1eefe8c94117" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_3c909e06-a048-444c-bdac-f60e14776bcd" xlink:to="loc_us-gaap_LoansReceivableMember_4432bc19-5aea-449c-8713-1eefe8c94117" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVEINCOME" xlink:type="simple" xlink:href="vici-20200930.xsd#CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVEINCOME"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVEINCOME" xlink:type="extended" id="ia5a441c927e04590bbf441646d42c8a6_CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVEINCOME"/>
  <link:roleRef roleURI="http://viciproperties.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" xlink:type="simple" xlink:href="vici-20200930.xsd#CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" xlink:type="extended" id="i611e867fe56848fc8107b9cd0645ad63_CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_daf61af3-6c5e-41e0-a2f4-16e10fd64999" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_d084ceab-42c3-4590-b98a-b4fb5ebbac2f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_daf61af3-6c5e-41e0-a2f4-16e10fd64999" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_d084ceab-42c3-4590-b98a-b4fb5ebbac2f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_347c3bc8-ac37-4a05-8385-c872a08082e7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_d084ceab-42c3-4590-b98a-b4fb5ebbac2f" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_347c3bc8-ac37-4a05-8385-c872a08082e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_94d9eb9e-06b4-4d6c-8002-1839d4d97b79" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_dfa5d3a9-036c-4548-a451-4ef4dfd4ca2b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_d084ceab-42c3-4590-b98a-b4fb5ebbac2f" xlink:to="loc_us-gaap_ProfitLoss_dfa5d3a9-036c-4548-a451-4ef4dfd4ca2b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_c82c93e4-b13c-4dc5-8f04-e5201522352e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_d084ceab-42c3-4590-b98a-b4fb5ebbac2f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_c82c93e4-b13c-4dc5-8f04-e5201522352e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_924e7bb5-2758-42d2-bb3f-c0d0eb3d3e60" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_d084ceab-42c3-4590-b98a-b4fb5ebbac2f" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_924e7bb5-2758-42d2-bb3f-c0d0eb3d3e60" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStockCash_d194866d-87f1-4509-9c25-ccc6b65ddec7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DividendsCommonStockCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_d084ceab-42c3-4590-b98a-b4fb5ebbac2f" xlink:to="loc_us-gaap_DividendsCommonStockCash_d194866d-87f1-4509-9c25-ccc6b65ddec7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_1147542d-90e0-4bf7-8e99-811348145874" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_d084ceab-42c3-4590-b98a-b4fb5ebbac2f" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_1147542d-90e0-4bf7-8e99-811348145874" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_5e7540a2-e29c-4e3f-b14d-f5a2a72a8c11" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_d084ceab-42c3-4590-b98a-b4fb5ebbac2f" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_5e7540a2-e29c-4e3f-b14d-f5a2a72a8c11" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_d89f208d-d037-4741-8b31-07497feb4b50" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingStandardsUpdateExtensibleList_77f52cd2-d70b-4707-97aa-392c355b961c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdateExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_d084ceab-42c3-4590-b98a-b4fb5ebbac2f" xlink:to="loc_us-gaap_AccountingStandardsUpdateExtensibleList_77f52cd2-d70b-4707-97aa-392c355b961c" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_f4f10ded-610c-4863-8ba7-b70666932849" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_daf61af3-6c5e-41e0-a2f4-16e10fd64999" xlink:to="loc_us-gaap_StatementTable_f4f10ded-610c-4863-8ba7-b70666932849" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_175e928d-9450-48bf-8a30-80ce89e0d3ec" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_f4f10ded-610c-4863-8ba7-b70666932849" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_175e928d-9450-48bf-8a30-80ce89e0d3ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_175e928d-9450-48bf-8a30-80ce89e0d3ec_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_175e928d-9450-48bf-8a30-80ce89e0d3ec" xlink:to="loc_us-gaap_EquityComponentDomain_175e928d-9450-48bf-8a30-80ce89e0d3ec_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_b599b5a0-1e18-4b3e-b3dc-75910b0e1be6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_175e928d-9450-48bf-8a30-80ce89e0d3ec" xlink:to="loc_us-gaap_EquityComponentDomain_b599b5a0-1e18-4b3e-b3dc-75910b0e1be6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember_60844b94-77ef-43c3-a7a5-70b7d1ef0911" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_b599b5a0-1e18-4b3e-b3dc-75910b0e1be6" xlink:to="loc_us-gaap_ParentMember_60844b94-77ef-43c3-a7a5-70b7d1ef0911" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_36fada9a-591c-44e1-8370-89edb63cfe10" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_60844b94-77ef-43c3-a7a5-70b7d1ef0911" xlink:to="loc_us-gaap_CommonStockMember_36fada9a-591c-44e1-8370-89edb63cfe10" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_1b7f4d3b-ff5c-43c6-b974-dfda3d5ce75e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_60844b94-77ef-43c3-a7a5-70b7d1ef0911" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_1b7f4d3b-ff5c-43c6-b974-dfda3d5ce75e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_32ae713e-dfc6-40ab-a5dd-761ac0724186" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_60844b94-77ef-43c3-a7a5-70b7d1ef0911" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_32ae713e-dfc6-40ab-a5dd-761ac0724186" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_1e46e38d-d92b-4aff-a7c3-cdc9c66dcbe3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_60844b94-77ef-43c3-a7a5-70b7d1ef0911" xlink:to="loc_us-gaap_RetainedEarningsMember_1e46e38d-d92b-4aff-a7c3-cdc9c66dcbe3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_4769ad30-5270-4007-bd57-fcc41555576f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_b599b5a0-1e18-4b3e-b3dc-75910b0e1be6" xlink:to="loc_us-gaap_NoncontrollingInterestMember_4769ad30-5270-4007-bd57-fcc41555576f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_0b9dfe30-da0e-44f4-97c8-9ae835fb32b4" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_f4f10ded-610c-4863-8ba7-b70666932849" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_0b9dfe30-da0e-44f4-97c8-9ae835fb32b4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_0b9dfe30-da0e-44f4-97c8-9ae835fb32b4_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_0b9dfe30-da0e-44f4-97c8-9ae835fb32b4" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_0b9dfe30-da0e-44f4-97c8-9ae835fb32b4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_35f1c479-da56-44fc-830a-81f08928389a" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_0b9dfe30-da0e-44f4-97c8-9ae835fb32b4" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_35f1c479-da56-44fc-830a-81f08928389a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_243d2e08-6d0c-4543-9861-bb298e7cdd3f" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_35f1c479-da56-44fc-830a-81f08928389a" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_243d2e08-6d0c-4543-9861-bb298e7cdd3f" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITYParenthetical" xlink:type="simple" xlink:href="vici-20200930.xsd#CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITYParenthetical"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITYParenthetical" xlink:type="extended" id="i5947ad55733e4cc7904035368e8376ef_CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITYParenthetical"/>
  <link:roleRef roleURI="http://viciproperties.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="vici-20200930.xsd#CONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended" id="i86bfcb0b9d8f4f4884d7ee7c53fdd4ba_CONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:roleRef roleURI="http://viciproperties.com/role/BusinessandOrganization" xlink:type="simple" xlink:href="vici-20200930.xsd#BusinessandOrganization"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/BusinessandOrganization" xlink:type="extended" id="i7a7ce1c2692a466984c1d5afb8343983_BusinessandOrganization"/>
  <link:roleRef roleURI="http://viciproperties.com/role/BusinessandOrganizationDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#BusinessandOrganizationDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/BusinessandOrganizationDetails" xlink:type="extended" id="i832f730eea6c46349f2307b368771c40_BusinessandOrganizationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_vici_OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems_34edfab3-bd3d-4e61-9a16-632edd2f9cbd" xlink:href="vici-20200930.xsd#vici_OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfRealEstateProperties_16f0b0a8-3462-4f5f-b0bf-027b4827c23a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NumberOfRealEstateProperties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems_34edfab3-bd3d-4e61-9a16-632edd2f9cbd" xlink:to="loc_us-gaap_NumberOfRealEstateProperties_16f0b0a8-3462-4f5f-b0bf-027b4827c23a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_OrganizationConsolidationAndPresentationOfFinancialStatementsTable_8694563b-6c06-4b8f-b03a-335ccaed31e2" xlink:href="vici-20200930.xsd#vici_OrganizationConsolidationAndPresentationOfFinancialStatementsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_vici_OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems_34edfab3-bd3d-4e61-9a16-632edd2f9cbd" xlink:to="loc_vici_OrganizationConsolidationAndPresentationOfFinancialStatementsTable_8694563b-6c06-4b8f-b03a-335ccaed31e2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_33be2a00-fa1c-4142-a7bf-ea4b61c20d6e" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vici_OrganizationConsolidationAndPresentationOfFinancialStatementsTable_8694563b-6c06-4b8f-b03a-335ccaed31e2" xlink:to="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_33be2a00-fa1c-4142-a7bf-ea4b61c20d6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_33be2a00-fa1c-4142-a7bf-ea4b61c20d6e_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_33be2a00-fa1c-4142-a7bf-ea4b61c20d6e" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_33be2a00-fa1c-4142-a7bf-ea4b61c20d6e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_0c297780-cdef-4786-bc85-7d0b630ef9ed" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_33be2a00-fa1c-4142-a7bf-ea4b61c20d6e" xlink:to="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_0c297780-cdef-4786-bc85-7d0b630ef9ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_GolfCoursesMember_08eb03b1-c8a4-4577-a8e5-4357b005d029" xlink:href="vici-20200930.xsd#vici_GolfCoursesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_0c297780-cdef-4786-bc85-7d0b630ef9ed" xlink:to="loc_vici_GolfCoursesMember_08eb03b1-c8a4-4577-a8e5-4357b005d029" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/SummaryofSignificantAccountingPolicies" xlink:type="simple" xlink:href="vici-20200930.xsd#SummaryofSignificantAccountingPolicies"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/SummaryofSignificantAccountingPolicies" xlink:type="extended" id="i5a2bd8b9e82e4c119c662bcd1cc53d5f_SummaryofSignificantAccountingPolicies"/>
  <link:roleRef roleURI="http://viciproperties.com/role/SummaryofSignificantAccountingPoliciesPolicies" xlink:type="simple" xlink:href="vici-20200930.xsd#SummaryofSignificantAccountingPoliciesPolicies"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/SummaryofSignificantAccountingPoliciesPolicies" xlink:type="extended" id="ia99c7eb659b34e788029b750ff249867_SummaryofSignificantAccountingPoliciesPolicies"/>
  <link:roleRef roleURI="http://viciproperties.com/role/SummaryofSignificantAccountingPoliciesTables" xlink:type="simple" xlink:href="vici-20200930.xsd#SummaryofSignificantAccountingPoliciesTables"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/SummaryofSignificantAccountingPoliciesTables" xlink:type="extended" id="id00f2e9998064283ad771a69d3642eda_SummaryofSignificantAccountingPoliciesTables"/>
  <link:roleRef roleURI="http://viciproperties.com/role/SummaryofSignificantAccountingPoliciesNarrativeDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#SummaryofSignificantAccountingPoliciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/SummaryofSignificantAccountingPoliciesNarrativeDetails" xlink:type="extended" id="i47889d9648ba467fa965eaf7e38a7540_SummaryofSignificantAccountingPoliciesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_654207c7-dea4-4fbb-8c80-831ef3d66a8e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_e6b2199b-5a66-4e19-ab6d-0488f122a4b3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_654207c7-dea4-4fbb-8c80-831ef3d66a8e" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_e6b2199b-5a66-4e19-ab6d-0488f122a4b3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestments_13ebf06a-066f-4404-924a-536bc91b203e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_654207c7-dea4-4fbb-8c80-831ef3d66a8e" xlink:to="loc_us-gaap_ShortTermInvestments_13ebf06a-066f-4404-924a-536bc91b203e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_PortionOfAmountIncludedInGeneralAndAdministrativeExpenses_83b293fb-2ebf-4e0c-a22b-693bc7b64052" xlink:href="vici-20200930.xsd#vici_PortionOfAmountIncludedInGeneralAndAdministrativeExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_654207c7-dea4-4fbb-8c80-831ef3d66a8e" xlink:to="loc_vici_PortionOfAmountIncludedInGeneralAndAdministrativeExpenses_83b293fb-2ebf-4e0c-a22b-693bc7b64052" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_26a31c9d-56b2-419a-ac7a-e94fa47c6b30" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_654207c7-dea4-4fbb-8c80-831ef3d66a8e" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_26a31c9d-56b2-419a-ac7a-e94fa47c6b30" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6676a341-a01b-480b-973f-dad672e861e4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_654207c7-dea4-4fbb-8c80-831ef3d66a8e" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6676a341-a01b-480b-973f-dad672e861e4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_91fc8f5d-48d0-44fc-9d33-f7b1adde3a09" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6676a341-a01b-480b-973f-dad672e861e4" xlink:to="loc_srt_OwnershipAxis_91fc8f5d-48d0-44fc-9d33-f7b1adde3a09" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_91fc8f5d-48d0-44fc-9d33-f7b1adde3a09_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_91fc8f5d-48d0-44fc-9d33-f7b1adde3a09" xlink:to="loc_srt_OwnershipDomain_91fc8f5d-48d0-44fc-9d33-f7b1adde3a09_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_5680ee0d-177b-4947-a52a-740084451af4" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_91fc8f5d-48d0-44fc-9d33-f7b1adde3a09" xlink:to="loc_srt_OwnershipDomain_5680ee0d-177b-4947-a52a-740084451af4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HarrahsJolietLandCoLLCMember_d6ac77c7-1595-4564-8f53-da2263e34ced" xlink:href="vici-20200930.xsd#vici_HarrahsJolietLandCoLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_5680ee0d-177b-4947-a52a-740084451af4" xlink:to="loc_vici_HarrahsJolietLandCoLLCMember_d6ac77c7-1595-4564-8f53-da2263e34ced" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_43793e90-1411-4179-8e88-58f66414dfce" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6676a341-a01b-480b-973f-dad672e861e4" xlink:to="loc_srt_StatementGeographicalAxis_43793e90-1411-4179-8e88-58f66414dfce" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_43793e90-1411-4179-8e88-58f66414dfce_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_43793e90-1411-4179-8e88-58f66414dfce" xlink:to="loc_srt_SegmentGeographicalDomain_43793e90-1411-4179-8e88-58f66414dfce_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_c726110a-2746-4bbc-a369-5faaa2ac1fa2" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_43793e90-1411-4179-8e88-58f66414dfce" xlink:to="loc_srt_SegmentGeographicalDomain_c726110a-2746-4bbc-a369-5faaa2ac1fa2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_PropertyLasVegasStripMember_1f7ea8f0-451c-4a59-9bc3-3e514306dc3e" xlink:href="vici-20200930.xsd#vici_PropertyLasVegasStripMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_c726110a-2746-4bbc-a369-5faaa2ac1fa2" xlink:to="loc_vici_PropertyLasVegasStripMember_1f7ea8f0-451c-4a59-9bc3-3e514306dc3e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_5468b5a8-80c8-4b97-9b39-7195321b36aa" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6676a341-a01b-480b-973f-dad672e861e4" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_5468b5a8-80c8-4b97-9b39-7195321b36aa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_5468b5a8-80c8-4b97-9b39-7195321b36aa_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_5468b5a8-80c8-4b97-9b39-7195321b36aa" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_5468b5a8-80c8-4b97-9b39-7195321b36aa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_f738a304-cd7b-4c41-a829-088c7a71f173" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_5468b5a8-80c8-4b97-9b39-7195321b36aa" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_f738a304-cd7b-4c41-a829-088c7a71f173" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_2495b12a-116d-41e4-b566-749501ade170" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CustomerConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_f738a304-cd7b-4c41-a829-088c7a71f173" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_2495b12a-116d-41e4-b566-749501ade170" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember_e125281b-8883-45bc-b7e8-31bf20e1e7b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeographicConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_f738a304-cd7b-4c41-a829-088c7a71f173" xlink:to="loc_us-gaap_GeographicConcentrationRiskMember_e125281b-8883-45bc-b7e8-31bf20e1e7b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_576bdab1-e3b0-4d14-b130-573d089c49a2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6676a341-a01b-480b-973f-dad672e861e4" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_576bdab1-e3b0-4d14-b130-573d089c49a2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_576bdab1-e3b0-4d14-b130-573d089c49a2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_576bdab1-e3b0-4d14-b130-573d089c49a2" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_576bdab1-e3b0-4d14-b130-573d089c49a2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_62d4a905-7451-4598-98f5-cb4978c828c3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_576bdab1-e3b0-4d14-b130-573d089c49a2" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_62d4a905-7451-4598-98f5-cb4978c828c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_29025879-bf30-4b5f-b39f-8262858c46e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SalesRevenueNetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_62d4a905-7451-4598-98f5-cb4978c828c3" xlink:to="loc_us-gaap_SalesRevenueNetMember_29025879-bf30-4b5f-b39f-8262858c46e0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_e5396526-a430-4817-8544-7d124c4e9015" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_6676a341-a01b-480b-973f-dad672e861e4" xlink:to="loc_dei_LegalEntityAxis_e5396526-a430-4817-8544-7d124c4e9015" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e5396526-a430-4817-8544-7d124c4e9015_default" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_e5396526-a430-4817-8544-7d124c4e9015" xlink:to="loc_dei_EntityDomain_e5396526-a430-4817-8544-7d124c4e9015_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e6849ea6-62da-4b23-8a9f-751fa9702a46" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_e5396526-a430-4817-8544-7d124c4e9015" xlink:to="loc_dei_EntityDomain_e6849ea6-62da-4b23-8a9f-751fa9702a46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CaesarsEntertainmentCorporationMember_38c79c62-7489-49c7-aca7-cc778a028062" xlink:href="vici-20200930.xsd#vici_CaesarsEntertainmentCorporationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_e6849ea6-62da-4b23-8a9f-751fa9702a46" xlink:to="loc_vici_CaesarsEntertainmentCorporationMember_38c79c62-7489-49c7-aca7-cc778a028062" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/SummaryofSignificantAccountingPoliciesScheduleofCashandCashEquivalentsandRestrictedCashDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#SummaryofSignificantAccountingPoliciesScheduleofCashandCashEquivalentsandRestrictedCashDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/SummaryofSignificantAccountingPoliciesScheduleofCashandCashEquivalentsandRestrictedCashDetails" xlink:type="extended" id="i12c9074faed044c59629375c139944c4_SummaryofSignificantAccountingPoliciesScheduleofCashandCashEquivalentsandRestrictedCashDetails"/>
  <link:roleRef roleURI="http://viciproperties.com/role/RecentlyIssuedAccountingPronouncements" xlink:type="simple" xlink:href="vici-20200930.xsd#RecentlyIssuedAccountingPronouncements"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/RecentlyIssuedAccountingPronouncements" xlink:type="extended" id="ia53e610e652c48e4be6427e830ec6ec7_RecentlyIssuedAccountingPronouncements"/>
  <link:roleRef roleURI="http://viciproperties.com/role/RecentlyIssuedAccountingPronouncementsDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#RecentlyIssuedAccountingPronouncementsDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/RecentlyIssuedAccountingPronouncementsDetails" xlink:type="extended" id="i00a4d1a65cd04be7b7d9f483b3ed3307_RecentlyIssuedAccountingPronouncementsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_bfa5b5b3-2884-4a2d-b046-9e52a0ef15a5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_6ca10133-d991-4610-b039-0129bde9e050" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_bfa5b5b3-2884-4a2d-b046-9e52a0ef15a5" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_6ca10133-d991-4610-b039-0129bde9e050" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CreditAllowancePercentage_06d9a001-4f25-4ca3-ae2f-df3f1816dbbd" xlink:href="vici-20200930.xsd#vici_CreditAllowancePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_bfa5b5b3-2884-4a2d-b046-9e52a0ef15a5" xlink:to="loc_vici_CreditAllowancePercentage_06d9a001-4f25-4ca3-ae2f-df3f1816dbbd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_836d1421-ebf1-4add-8b7b-71829af5df7b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_bfa5b5b3-2884-4a2d-b046-9e52a0ef15a5" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_836d1421-ebf1-4add-8b7b-71829af5df7b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_f3bad5aa-f3f2-4bba-8011-e51cda0d017b" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_836d1421-ebf1-4add-8b7b-71829af5df7b" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_f3bad5aa-f3f2-4bba-8011-e51cda0d017b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_f3bad5aa-f3f2-4bba-8011-e51cda0d017b_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_f3bad5aa-f3f2-4bba-8011-e51cda0d017b" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_f3bad5aa-f3f2-4bba-8011-e51cda0d017b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_713da504-b287-4787-9fe0-b4cf6c610f7a" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_f3bad5aa-f3f2-4bba-8011-e51cda0d017b" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_713da504-b287-4787-9fe0-b4cf6c610f7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_249e30e1-cb07-4c74-b0e5-036a20ce16aa" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_713da504-b287-4787-9fe0-b4cf6c610f7a" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_249e30e1-cb07-4c74-b0e5-036a20ce16aa" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/PropertyTransactions" xlink:type="simple" xlink:href="vici-20200930.xsd#PropertyTransactions"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/PropertyTransactions" xlink:type="extended" id="idaa1eb9d11444dedbfebb4e3f6c00b48_PropertyTransactions"/>
  <link:roleRef roleURI="http://viciproperties.com/role/PropertyTransactionsDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#PropertyTransactionsDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/PropertyTransactionsDetails" xlink:type="extended" id="i3d4bb4fdbb464347bc4ca937f367d826_PropertyTransactionsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DisposalGroupIncludingDiscontinuedOperationConsiderationToBeReceived_cb88b6de-bacb-4528-9ec8-894fd80a1a16" xlink:href="vici-20200930.xsd#vici_DisposalGroupIncludingDiscontinuedOperationConsiderationToBeReceived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_DisposalGroupIncludingDiscontinuedOperationConsiderationToBeReceived_cb88b6de-bacb-4528-9ec8-894fd80a1a16" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ProceedsFromSaleOfAsset_825ef366-f72b-48c2-9a42-e4a2463b3a43" xlink:href="vici-20200930.xsd#vici_ProceedsFromSaleOfAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_ProceedsFromSaleOfAsset_825ef366-f72b-48c2-9a42-e4a2463b3a43" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_32d1c609-51ea-47a9-ac7d-fb3c72164efa" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_NotesReceivableGross_32d1c609-51ea-47a9-ac7d-fb3c72164efa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ReceivableTerm_42b16a60-ceb3-464e-9f04-35cabb6e6402" xlink:href="vici-20200930.xsd#vici_ReceivableTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_ReceivableTerm_42b16a60-ceb3-464e-9f04-35cabb6e6402" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AreaOfRealEstateProperty_ca7fca29-dc79-43ec-ad4a-af19cc21dc43" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AreaOfRealEstateProperty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_AreaOfRealEstateProperty_ca7fca29-dc79-43ec-ad4a-af19cc21dc43" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_ffe73d68-cfb7-4457-a1b5-33ec0bc67b4f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_DebtInstrumentTerm_ffe73d68-cfb7-4457-a1b5-33ec0bc67b4f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_1e890425-9919-4a31-b171-6780cb587cfc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_1e890425-9919-4a31-b171-6780cb587cfc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_AnnualEscalationPercentage_050e55e1-af1f-4f21-a33c-29452de7d972" xlink:href="vici-20200930.xsd#vici_AnnualEscalationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_AnnualEscalationPercentage_050e55e1-af1f-4f21-a33c-29452de7d972" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_189e8b6b-bea7-4af3-aa23-cd89b9739469" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_189e8b6b-bea7-4af3-aa23-cd89b9739469" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPaymentInterest_09db115b-12e1-473d-ab78-f256d84dca45" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentPeriodicPaymentInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_DebtInstrumentPeriodicPaymentInterest_09db115b-12e1-473d-ab78-f256d84dca45" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_a763e304-e368-4fe7-8658-1d54db3e2032" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_a763e304-e368-4fe7-8658-1d54db3e2032" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ContractualRentAmounts_e29aad8a-f89b-4e74-b86b-c89ab68fab45" xlink:href="vici-20200930.xsd#vici_ContractualRentAmounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_ContractualRentAmounts_e29aad8a-f89b-4e74-b86b-c89ab68fab45" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_AnnualIncreasesPercentage_58c9ec78-07f2-4353-a4b9-0b7819df57f1" xlink:href="vici-20200930.xsd#vici_AnnualIncreasesPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_AnnualIncreasesPercentage_58c9ec78-07f2-4353-a4b9-0b7819df57f1" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireRealEstate_4bb0a418-62e7-468a-a605-0c4c2d1536b0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireRealEstate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_PaymentsToAcquireRealEstate_4bb0a418-62e7-468a-a605-0c4c2d1536b0" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyHeldForSale_34cbe18b-04d3-4b7e-9db1-9c5de39bc3da" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyHeldForSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyHeldForSale_34cbe18b-04d3-4b7e-9db1-9c5de39bc3da" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_47141392-1463-47d7-b80c-cb3e4c2319fc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_47141392-1463-47d7-b80c-cb3e4c2319fc" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebt_3f674335-1e86-4fed-a31f-1403eec3c70e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SecuredDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_SecuredDebt_3f674335-1e86-4fed-a31f-1403eec3c70e" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_a06334a5-42a9-4f60-af21-6294ecfe642a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_a06334a5-42a9-4f60-af21-6294ecfe642a" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_3158166f-0143-45f5-a942-5b2155432f4e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MortgageLoansOnRealEstateInterestRate_2a9c43d2-558b-4663-96b8-30eb2e071c00" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MortgageLoansOnRealEstateInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_srt_MortgageLoansOnRealEstateInterestRate_2a9c43d2-558b-4663-96b8-30eb2e071c00" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_IncreaseDecreaseInAnnualRentPaymentsReceivable_784ba89c-ab9c-46d9-8528-638b714dee33" xlink:href="vici-20200930.xsd#vici_IncreaseDecreaseInAnnualRentPaymentsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_IncreaseDecreaseInAnnualRentPaymentsReceivable_784ba89c-ab9c-46d9-8528-638b714dee33" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitment_da902a13-e47f-4e07-b2ec-56426a1243eb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_OtherCommitment_da902a13-e47f-4e07-b2ec-56426a1243eb" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_GroundLeaseFurtherAdditionalPeriod_8bfa295a-42d2-485a-9ecd-4d2bb11a3b7f" xlink:href="vici-20200930.xsd#vici_GroundLeaseFurtherAdditionalPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_GroundLeaseFurtherAdditionalPeriod_8bfa295a-42d2-485a-9ecd-4d2bb11a3b7f" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ConsiderationForPropertyAcquired_bace964d-a6f7-4ac8-b426-4dadc7825b9d" xlink:href="vici-20200930.xsd#vici_ConsiderationForPropertyAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_ConsiderationForPropertyAcquired_bace964d-a6f7-4ac8-b426-4dadc7825b9d" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRent_90bd8de1-378b-4585-a119-76825cbe07fb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsForRent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_PaymentsForRent_90bd8de1-378b-4585-a119-76825cbe07fb" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorSalesTypeLeaseTermOfContract1_fb2f949d-106b-4ddb-bd30-0b93b8438487" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorSalesTypeLeaseTermOfContract1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_LessorSalesTypeLeaseTermOfContract1_fb2f949d-106b-4ddb-bd30-0b93b8438487" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorLeasingArrangementsSalesTypeLeasePercentageOfAggregateEBITDAOfAllFacilitiesUnderLeaseAgreement_228fa527-5750-4f69-8314-a0f7a25fb69f" xlink:href="vici-20200930.xsd#vici_LessorLeasingArrangementsSalesTypeLeasePercentageOfAggregateEBITDAOfAllFacilitiesUnderLeaseAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_LessorLeasingArrangementsSalesTypeLeasePercentageOfAggregateEBITDAOfAllFacilitiesUnderLeaseAgreement_228fa527-5750-4f69-8314-a0f7a25fb69f" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NumberOfFacilitiesFutureAcquistion_a1878217-14cc-4623-b03a-0174014bac1b" xlink:href="vici-20200930.xsd#vici_NumberOfFacilitiesFutureAcquistion"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_NumberOfFacilitiesFutureAcquistion_a1878217-14cc-4623-b03a-0174014bac1b" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorLeasingArrangementPurchasePriceMultiple_0a7c08e0-233b-4318-b5d5-58ce268ac88f" xlink:href="vici-20200930.xsd#vici_LessorLeasingArrangementPurchasePriceMultiple"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_LessorLeasingArrangementPurchasePriceMultiple_0a7c08e0-233b-4318-b5d5-58ce268ac88f" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorLeasingArrangementsDenominatorAmountOfPropertysTrailingFourQuartersEBITDAAtTimeOfAcquisition_334dccf1-c252-4cad-b44c-3764cac4ced0" xlink:href="vici-20200930.xsd#vici_LessorLeasingArrangementsDenominatorAmountOfPropertysTrailingFourQuartersEBITDAAtTimeOfAcquisition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_LessorLeasingArrangementsDenominatorAmountOfPropertysTrailingFourQuartersEBITDAAtTimeOfAcquisition_334dccf1-c252-4cad-b44c-3764cac4ced0" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorLeasingArrangementsInitialAnnualRentCoverage_97010c84-81db-4d51-bb29-78a975bb56e5" xlink:href="vici-20200930.xsd#vici_LessorLeasingArrangementsInitialAnnualRentCoverage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_LessorLeasingArrangementsInitialAnnualRentCoverage_97010c84-81db-4d51-bb29-78a975bb56e5" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorLeasingArrangementsInitialAnnualRentToBeAcquired_59df7fd6-dabd-46e3-a666-8865352d71f0" xlink:href="vici-20200930.xsd#vici_LessorLeasingArrangementsInitialAnnualRentToBeAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_LessorLeasingArrangementsInitialAnnualRentToBeAcquired_59df7fd6-dabd-46e3-a666-8865352d71f0" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtExtinguishmentCosts_ee79e0a8-fca7-4a53-a92d-714867b23f74" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfDebtExtinguishmentCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_PaymentsOfDebtExtinguishmentCosts_ee79e0a8-fca7-4a53-a92d-714867b23f74" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ProceedsFromDebtPrepaymentPenaltyReimbursementReceivable_098ea6ad-7d2a-46e0-8cd4-394126d73fde" xlink:href="vici-20200930.xsd#vici_ProceedsFromDebtPrepaymentPenaltyReimbursementReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_ProceedsFromDebtPrepaymentPenaltyReimbursementReceivable_098ea6ad-7d2a-46e0-8cd4-394126d73fde" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_f342fc67-9e6b-4e92-944e-527042fda174" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_f342fc67-9e6b-4e92-944e-527042fda174" xlink:type="arc" order="34"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ProceedsFromReimbursementReceivable_5198acba-8909-426a-a5f5-9536c38f452c" xlink:href="vici-20200930.xsd#vici_ProceedsFromReimbursementReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_ProceedsFromReimbursementReceivable_5198acba-8909-426a-a5f5-9536c38f452c" xlink:type="arc" order="35"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ReductionInDebtInLieuOfCash_1d638020-3c52-4c36-af27-de97220f319f" xlink:href="vici-20200930.xsd#vici_ReductionInDebtInLieuOfCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_ReductionInDebtInLieuOfCash_1d638020-3c52-4c36-af27-de97220f319f" xlink:type="arc" order="36"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtInstrumentExtensionTerm_9eabb8b3-19e3-4583-bdce-d5b2ff3ae85c" xlink:href="vici-20200930.xsd#vici_DebtInstrumentExtensionTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_DebtInstrumentExtensionTerm_9eabb8b3-19e3-4583-bdce-d5b2ff3ae85c" xlink:type="arc" order="37"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_bcabd335-9d5f-4b5c-a9be-4dbb132c854c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NumberOfInstallmentPayments_ec3e54bf-4aff-41b9-9d9f-d20c417d0f8a" xlink:href="vici-20200930.xsd#vici_NumberOfInstallmentPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_NumberOfInstallmentPayments_ec3e54bf-4aff-41b9-9d9f-d20c417d0f8a" xlink:type="arc" order="39"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_4af3f811-a9ed-4534-812a-cdea9c94b2d1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_4af3f811-a9ed-4534-812a-cdea9c94b2d1" xlink:type="arc" order="40"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_ef6e2abe-c1fb-4fc2-a177-825b57d8f365" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_ef6e2abe-c1fb-4fc2-a177-825b57d8f365" xlink:type="arc" order="41"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NoteReceivableInterestRate_bc300b32-b0fa-4d37-86e7-7d5c8cab0a1a" xlink:href="vici-20200930.xsd#vici_NoteReceivableInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_NoteReceivableInterestRate_bc300b32-b0fa-4d37-86e7-7d5c8cab0a1a" xlink:type="arc" order="42"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorLeasingArrangementsSalesTypeLeasesNumberOfRenewalOptions_2ee45ad3-5a01-49f6-ad70-51c7c94b2850" xlink:href="vici-20200930.xsd#vici_LessorLeasingArrangementsSalesTypeLeasesNumberOfRenewalOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_LessorLeasingArrangementsSalesTypeLeasesNumberOfRenewalOptions_2ee45ad3-5a01-49f6-ad70-51c7c94b2850" xlink:type="arc" order="43"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorSalesTypeLeaseRenewalTerm1_cd9a9d70-7870-44fc-b94b-e0a4fdf00793" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorSalesTypeLeaseRenewalTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_LessorSalesTypeLeaseRenewalTerm1_cd9a9d70-7870-44fc-b94b-e0a4fdf00793" xlink:type="arc" order="44"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorLeasingArrangementsSalestypeDirectFinancingLeaseNumberOfRenewalOptions_7d8e3da3-1bc7-4257-9257-f108ab42c605" xlink:href="vici-20200930.xsd#vici_LessorLeasingArrangementsSalestypeDirectFinancingLeaseNumberOfRenewalOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_vici_LessorLeasingArrangementsSalestypeDirectFinancingLeaseNumberOfRenewalOptions_7d8e3da3-1bc7-4257-9257-f108ab42c605" xlink:type="arc" order="45"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b67a8cd0-816e-4898-af83-e8bd5be213af" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_8ace84ed-db27-4627-a0c1-689eea833070" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_8ace84ed-db27-4627-a0c1-689eea833070" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_8ace84ed-db27-4627-a0c1-689eea833070_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_8ace84ed-db27-4627-a0c1-689eea833070" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_8ace84ed-db27-4627-a0c1-689eea833070_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_8ace84ed-db27-4627-a0c1-689eea833070" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_MTAPropertyAcquisitionsMember_6b863a6f-2e3f-4363-a2b4-e3d6a7447b79" xlink:href="vici-20200930.xsd#vici_MTAPropertyAcquisitionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_MTAPropertyAcquisitionsMember_6b863a6f-2e3f-4363-a2b4-e3d6a7447b79" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HarrahsNewOrleansPurchaseAgreementMember_cd211b9b-8695-40ef-9e0f-8f3fcc84df9e" xlink:href="vici-20200930.xsd#vici_HarrahsNewOrleansPurchaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_HarrahsNewOrleansPurchaseAgreementMember_cd211b9b-8695-40ef-9e0f-8f3fcc84df9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HarrahsAtlanticCityPurchaseAgreementMember_e02ec54e-df2f-43df-9470-2bb1392c982c" xlink:href="vici-20200930.xsd#vici_HarrahsAtlanticCityPurchaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_HarrahsAtlanticCityPurchaseAgreementMember_e02ec54e-df2f-43df-9470-2bb1392c982c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HarrahsLaughlinPurchaseAgreementMember_a6655e75-7974-435e-ac8b-dfd0906872af" xlink:href="vici-20200930.xsd#vici_HarrahsLaughlinPurchaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_HarrahsLaughlinPurchaseAgreementMember_a6655e75-7974-435e-ac8b-dfd0906872af" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_RegionalMasterLeaseAgreementMember_b66f1efd-4011-4844-a686-d6aa1461e864" xlink:href="vici-20200930.xsd#vici_RegionalMasterLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_RegionalMasterLeaseAgreementMember_b66f1efd-4011-4844-a686-d6aa1461e864" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_JACKClevelandandThistledownAcquisitionMember_2ef629b5-4a39-44ac-bba6-773c7deb50c4" xlink:href="vici-20200930.xsd#vici_JACKClevelandandThistledownAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_JACKClevelandandThistledownAcquisitionMember_2ef629b5-4a39-44ac-bba6-773c7deb50c4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CenturyPortfolioMember_4b1b8a67-7b77-4209-a7c6-4f09a6372d93" xlink:href="vici-20200930.xsd#vici_CenturyPortfolioMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_CenturyPortfolioMember_4b1b8a67-7b77-4209-a7c6-4f09a6372d93" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CenturyCasinosMember_425a6181-9e8a-4316-8b2c-4a04070d825f" xlink:href="vici-20200930.xsd#vici_CenturyCasinosMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_CenturyCasinosMember_425a6181-9e8a-4316-8b2c-4a04070d825f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_JACKCincinnatiCasinoMember_794d2ac5-5ab2-486d-a8ce-1cfd18d9c0bc" xlink:href="vici-20200930.xsd#vici_JACKCincinnatiCasinoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_JACKCincinnatiCasinoMember_794d2ac5-5ab2-486d-a8ce-1cfd18d9c0bc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HardRockMember_27a2bb6f-eb2b-449c-a3ff-87437ecacf04" xlink:href="vici-20200930.xsd#vici_HardRockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_HardRockMember_27a2bb6f-eb2b-449c-a3ff-87437ecacf04" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_GreektownAcquisitionMember_734890aa-9862-41d0-b46e-d8870c48f370" xlink:href="vici-20200930.xsd#vici_GreektownAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_GreektownAcquisitionMember_734890aa-9862-41d0-b46e-d8870c48f370" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_MargaritavilleMember_6b0e57af-7057-4e4a-858f-a4c54bb3b862" xlink:href="vici-20200930.xsd#vici_MargaritavilleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_MargaritavilleMember_6b0e57af-7057-4e4a-858f-a4c54bb3b862" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_PennNationalMember_e0bb6be4-adfd-464a-86cc-d1537cd7446f" xlink:href="vici-20200930.xsd#vici_PennNationalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_PennNationalMember_e0bb6be4-adfd-464a-86cc-d1537cd7446f" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LasVegasLandMember_6cf00245-5955-4800-af8a-c56ba33a7328" xlink:href="vici-20200930.xsd#vici_LasVegasLandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_LasVegasLandMember_6cf00245-5955-4800-af8a-c56ba33a7328" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CaesarsForumConventionCenterMember_e75f94f9-4c4d-44be-87d6-a27977f143b5" xlink:href="vici-20200930.xsd#vici_CaesarsForumConventionCenterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_9244cb0c-b696-45b4-9b61-a59858734b81" xlink:to="loc_vici_CaesarsForumConventionCenterMember_e75f94f9-4c4d-44be-87d6-a27977f143b5" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_f7798d47-01b6-4602-b138-472a72ad2b43" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_f7798d47-01b6-4602-b138-472a72ad2b43" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_f7798d47-01b6-4602-b138-472a72ad2b43_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_f7798d47-01b6-4602-b138-472a72ad2b43" xlink:to="loc_us-gaap_ReceivableTypeDomain_f7798d47-01b6-4602-b138-472a72ad2b43_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_7fda8515-ef4b-412d-8223-e6b39561b4f8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_f7798d47-01b6-4602-b138-472a72ad2b43" xlink:to="loc_us-gaap_ReceivableTypeDomain_7fda8515-ef4b-412d-8223-e6b39561b4f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableMember_aa6639f8-51fe-48f7-b6c3-68deb81446d6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_7fda8515-ef4b-412d-8223-e6b39561b4f8" xlink:to="loc_us-gaap_LoansReceivableMember_aa6639f8-51fe-48f7-b6c3-68deb81446d6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceReceivablesMember_5b9cd15c-78d7-4d37-8d13-35023b4755d4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_7fda8515-ef4b-412d-8223-e6b39561b4f8" xlink:to="loc_us-gaap_FinanceReceivablesMember_5b9cd15c-78d7-4d37-8d13-35023b4755d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermAxis_b89ee959-6c39-4eb2-9d49-15225ab02f81" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseContractualTermAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_us-gaap_LeaseContractualTermAxis_b89ee959-6c39-4eb2-9d49-15225ab02f81" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_b89ee959-6c39-4eb2-9d49-15225ab02f81_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseContractualTermDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LeaseContractualTermAxis_b89ee959-6c39-4eb2-9d49-15225ab02f81" xlink:to="loc_us-gaap_LeaseContractualTermDomain_b89ee959-6c39-4eb2-9d49-15225ab02f81_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_f5ed1424-756d-4799-9796-8cfaaa6284f6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseContractualTermDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LeaseContractualTermAxis_b89ee959-6c39-4eb2-9d49-15225ab02f81" xlink:to="loc_us-gaap_LeaseContractualTermDomain_f5ed1424-756d-4799-9796-8cfaaa6284f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LasVegasMasterLeaseMember_91c36bcc-84d9-48ff-a61a-79988af3abb6" xlink:href="vici-20200930.xsd#vici_LasVegasMasterLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_f5ed1424-756d-4799-9796-8cfaaa6284f6" xlink:to="loc_vici_LasVegasMasterLeaseMember_91c36bcc-84d9-48ff-a61a-79988af3abb6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HLVAdditionalRentAcquisitionMember_ea7497e8-439e-4680-9b29-bd277e35c236" xlink:href="vici-20200930.xsd#vici_HLVAdditionalRentAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LasVegasMasterLeaseMember_91c36bcc-84d9-48ff-a61a-79988af3abb6" xlink:to="loc_vici_HLVAdditionalRentAcquisitionMember_ea7497e8-439e-4680-9b29-bd277e35c236" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CPLVAdditionalRentAcquisitionMember_3f63e652-03a5-4e37-8549-ade277ebc1e4" xlink:href="vici-20200930.xsd#vici_CPLVAdditionalRentAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LasVegasMasterLeaseMember_91c36bcc-84d9-48ff-a61a-79988af3abb6" xlink:to="loc_vici_CPLVAdditionalRentAcquisitionMember_3f63e652-03a5-4e37-8549-ade277ebc1e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HLVLeaseAgreementMember_95ea1612-81b7-44f6-9741-8f6f8f84d19c" xlink:href="vici-20200930.xsd#vici_HLVLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_f5ed1424-756d-4799-9796-8cfaaa6284f6" xlink:to="loc_vici_HLVLeaseAgreementMember_95ea1612-81b7-44f6-9741-8f6f8f84d19c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HLVAdditionalRentAcquisitionMember_561b25b8-81bf-4a23-8f70-3bfb851e63f9" xlink:href="vici-20200930.xsd#vici_HLVAdditionalRentAcquisitionMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CaesarsLeaseAgreementsMember_6ca33754-c304-4876-ac4d-54fb2564e41c" xlink:href="vici-20200930.xsd#vici_CaesarsLeaseAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_f5ed1424-756d-4799-9796-8cfaaa6284f6" xlink:to="loc_vici_CaesarsLeaseAgreementsMember_6ca33754-c304-4876-ac4d-54fb2564e41c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_08e75ff2-d7ff-434d-8d8b-24639754c726" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_08e75ff2-d7ff-434d-8d8b-24639754c726" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_08e75ff2-d7ff-434d-8d8b-24639754c726_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_08e75ff2-d7ff-434d-8d8b-24639754c726" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_08e75ff2-d7ff-434d-8d8b-24639754c726_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_5824ad81-b3e8-47c9-8605-93a0fdc65ab2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_08e75ff2-d7ff-434d-8d8b-24639754c726" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_5824ad81-b3e8-47c9-8605-93a0fdc65ab2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_RockOhioVenturesLoanMember_578263c8-42d2-40e4-8b65-eda48dfb687b" xlink:href="vici-20200930.xsd#vici_RockOhioVenturesLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_5824ad81-b3e8-47c9-8605-93a0fdc65ab2" xlink:to="loc_vici_RockOhioVenturesLoanMember_578263c8-42d2-40e4-8b65-eda48dfb687b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_89bc1770-7a2e-4d54-9d0c-a7399e678bb9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_89bc1770-7a2e-4d54-9d0c-a7399e678bb9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_89bc1770-7a2e-4d54-9d0c-a7399e678bb9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_89bc1770-7a2e-4d54-9d0c-a7399e678bb9" xlink:to="loc_us-gaap_RelatedPartyDomain_89bc1770-7a2e-4d54-9d0c-a7399e678bb9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_d9b726bf-7589-42c5-8d60-8b2876d333fc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_89bc1770-7a2e-4d54-9d0c-a7399e678bb9" xlink:to="loc_us-gaap_RelatedPartyDomain_d9b726bf-7589-42c5-8d60-8b2876d333fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AffiliatedEntityMember_3b6ffc64-a28c-4b36-a0d5-46939fe3eb93" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_AffiliatedEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_d9b726bf-7589-42c5-8d60-8b2876d333fc" xlink:to="loc_srt_AffiliatedEntityMember_3b6ffc64-a28c-4b36-a0d5-46939fe3eb93" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_3b39eda5-2057-4ddf-99b0-6db30a3e3d3e" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_srt_StatementGeographicalAxis_3b39eda5-2057-4ddf-99b0-6db30a3e3d3e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_3b39eda5-2057-4ddf-99b0-6db30a3e3d3e_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_3b39eda5-2057-4ddf-99b0-6db30a3e3d3e" xlink:to="loc_srt_SegmentGeographicalDomain_3b39eda5-2057-4ddf-99b0-6db30a3e3d3e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_6d1cf189-c3c4-4ed2-9eac-db9c648cad28" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_3b39eda5-2057-4ddf-99b0-6db30a3e3d3e" xlink:to="loc_srt_SegmentGeographicalDomain_6d1cf189-c3c4-4ed2-9eac-db9c648cad28" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_stpr_IN_6222f770-b442-41dc-bf27-e46e9447c595" xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_IN"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_6d1cf189-c3c4-4ed2-9eac-db9c648cad28" xlink:to="loc_stpr_IN_6222f770-b442-41dc-bf27-e46e9447c595" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_7b037315-be5a-4411-81fc-29e09a06acf1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_us-gaap_DebtInstrumentAxis_7b037315-be5a-4411-81fc-29e09a06acf1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_7b037315-be5a-4411-81fc-29e09a06acf1_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_7b037315-be5a-4411-81fc-29e09a06acf1" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_7b037315-be5a-4411-81fc-29e09a06acf1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_b56a44aa-d51b-4a59-9863-df9706b5dec0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_7b037315-be5a-4411-81fc-29e09a06acf1" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_b56a44aa-d51b-4a59-9863-df9706b5dec0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CPLVCMBSDebtMember_b9fa1c7d-62b9-4e77-a744-9fc46726ad82" xlink:href="vici-20200930.xsd#vici_CPLVCMBSDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_b56a44aa-d51b-4a59-9863-df9706b5dec0" xlink:to="loc_vici_CPLVCMBSDebtMember_b9fa1c7d-62b9-4e77-a744-9fc46726ad82" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_EldoradoSeniorBridgeFacilityMember_2d414559-6a0b-48f2-aa8a-8aef78d5601d" xlink:href="vici-20200930.xsd#vici_EldoradoSeniorBridgeFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_b56a44aa-d51b-4a59-9863-df9706b5dec0" xlink:to="loc_vici_EldoradoSeniorBridgeFacilityMember_2d414559-6a0b-48f2-aa8a-8aef78d5601d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ForumConventionCenterMortgageLoanMember_616cbbbd-36cf-4ec5-8b05-a2331ee8a81f" xlink:href="vici-20200930.xsd#vici_ForumConventionCenterMortgageLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_b56a44aa-d51b-4a59-9863-df9706b5dec0" xlink:to="loc_vici_ForumConventionCenterMortgageLoanMember_616cbbbd-36cf-4ec5-8b05-a2331ee8a81f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ChelseaPiersMortgageLoanMember_bd6e0f22-f884-47f3-9765-56d3689f5547" xlink:href="vici-20200930.xsd#vici_ChelseaPiersMortgageLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_b56a44aa-d51b-4a59-9863-df9706b5dec0" xlink:to="loc_vici_ChelseaPiersMortgageLoanMember_bd6e0f22-f884-47f3-9765-56d3689f5547" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_be120d9d-9fef-49a1-9852-e66148b53dc1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_us-gaap_CreditFacilityAxis_be120d9d-9fef-49a1-9852-e66148b53dc1" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_be120d9d-9fef-49a1-9852-e66148b53dc1_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_be120d9d-9fef-49a1-9852-e66148b53dc1" xlink:to="loc_us-gaap_CreditFacilityDomain_be120d9d-9fef-49a1-9852-e66148b53dc1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_7044ed72-8c96-4b72-bfa0-ffd4f3eed887" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_be120d9d-9fef-49a1-9852-e66148b53dc1" xlink:to="loc_us-gaap_CreditFacilityDomain_7044ed72-8c96-4b72-bfa0-ffd4f3eed887" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FirstLienSecuredBridgeFacilityMember_23485c38-d8c4-4c7e-9bb9-bc35b757d084" xlink:href="vici-20200930.xsd#vici_FirstLienSecuredBridgeFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_7044ed72-8c96-4b72-bfa0-ffd4f3eed887" xlink:to="loc_vici_FirstLienSecuredBridgeFacilityMember_23485c38-d8c4-4c7e-9bb9-bc35b757d084" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SecondLienSecuredBridgeFacilityMember_adbe85fb-3fea-4abe-b31d-2f26c07c5f2e" xlink:href="vici-20200930.xsd#vici_SecondLienSecuredBridgeFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_7044ed72-8c96-4b72-bfa0-ffd4f3eed887" xlink:to="loc_vici_SecondLienSecuredBridgeFacilityMember_adbe85fb-3fea-4abe-b31d-2f26c07c5f2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_9ee57fda-8163-4bf8-9073-655cd076fc61" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_srt_CounterpartyNameAxis_9ee57fda-8163-4bf8-9073-655cd076fc61" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9ee57fda-8163-4bf8-9073-655cd076fc61_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_9ee57fda-8163-4bf8-9073-655cd076fc61" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9ee57fda-8163-4bf8-9073-655cd076fc61_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_834da7c5-fbb4-4726-a981-2abdf14265c0" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_9ee57fda-8163-4bf8-9073-655cd076fc61" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_834da7c5-fbb4-4726-a981-2abdf14265c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CaesarTenantMember_f553bb0a-d959-480f-9e38-512c8f1bae37" xlink:href="vici-20200930.xsd#vici_CaesarTenantMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_834da7c5-fbb4-4726-a981-2abdf14265c0" xlink:to="loc_vici_CaesarTenantMember_f553bb0a-d959-480f-9e38-512c8f1bae37" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CaesarsEntertainmentOperatingCompanyInc.Member_2b4a689e-87cf-42b3-b4df-28c4054880e5" xlink:href="vici-20200930.xsd#vici_CaesarsEntertainmentOperatingCompanyInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_834da7c5-fbb4-4726-a981-2abdf14265c0" xlink:to="loc_vici_CaesarsEntertainmentOperatingCompanyInc.Member_2b4a689e-87cf-42b3-b4df-28c4054880e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ForumConventionCenterBorrowerMember_d028c5c7-55de-4b3f-80f5-ad9ec33d130f" xlink:href="vici-20200930.xsd#vici_ForumConventionCenterBorrowerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_834da7c5-fbb4-4726-a981-2abdf14265c0" xlink:to="loc_vici_ForumConventionCenterBorrowerMember_d028c5c7-55de-4b3f-80f5-ad9ec33d130f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_JACKEntertainmentLLCMember_4974b342-37c4-4640-9dd1-12baefb4b96e" xlink:href="vici-20200930.xsd#vici_JACKEntertainmentLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_834da7c5-fbb4-4726-a981-2abdf14265c0" xlink:to="loc_vici_JACKEntertainmentLLCMember_4974b342-37c4-4640-9dd1-12baefb4b96e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_PennNationalMember_d3097d1a-8fad-47dc-b03d-97ddccd3afbc" xlink:href="vici-20200930.xsd#vici_PennNationalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_834da7c5-fbb4-4726-a981-2abdf14265c0" xlink:to="loc_vici_PennNationalMember_d3097d1a-8fad-47dc-b03d-97ddccd3afbc" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_5635a736-ddad-4564-b581-bcf91eabb342" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_us-gaap_VariableRateAxis_5635a736-ddad-4564-b581-bcf91eabb342" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_5635a736-ddad-4564-b581-bcf91eabb342_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_5635a736-ddad-4564-b581-bcf91eabb342" xlink:to="loc_us-gaap_VariableRateDomain_5635a736-ddad-4564-b581-bcf91eabb342_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_d3aa19aa-9885-4583-9ae8-9ce3c13e055a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_5635a736-ddad-4564-b581-bcf91eabb342" xlink:to="loc_us-gaap_VariableRateDomain_d3aa19aa-9885-4583-9ae8-9ce3c13e055a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_f0520dbd-83e6-4e18-bd25-fdbead1e5736" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_d3aa19aa-9885-4583-9ae8-9ce3c13e055a" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_f0520dbd-83e6-4e18-bd25-fdbead1e5736" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_9e5ba654-87ed-4382-a359-3e7af02a3bc8" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_dei_LegalEntityAxis_9e5ba654-87ed-4382-a359-3e7af02a3bc8" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9e5ba654-87ed-4382-a359-3e7af02a3bc8_default" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9e5ba654-87ed-4382-a359-3e7af02a3bc8" xlink:to="loc_dei_EntityDomain_9e5ba654-87ed-4382-a359-3e7af02a3bc8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a4bdacd5-7292-4fad-bec3-a9d347f3e121" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9e5ba654-87ed-4382-a359-3e7af02a3bc8" xlink:to="loc_dei_EntityDomain_a4bdacd5-7292-4fad-bec3-a9d347f3e121" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ForumConventionCenterBorrowerMember_e773db92-80a9-4746-a332-912305630ff5" xlink:href="vici-20200930.xsd#vici_ForumConventionCenterBorrowerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a4bdacd5-7292-4fad-bec3-a9d347f3e121" xlink:to="loc_vici_ForumConventionCenterBorrowerMember_e773db92-80a9-4746-a332-912305630ff5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CaesarsEntertainmentOperatingCompanyInc.Member_337ea196-2754-40d7-a519-66e7f8874df5" xlink:href="vici-20200930.xsd#vici_CaesarsEntertainmentOperatingCompanyInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a4bdacd5-7292-4fad-bec3-a9d347f3e121" xlink:to="loc_vici_CaesarsEntertainmentOperatingCompanyInc.Member_337ea196-2754-40d7-a519-66e7f8874df5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_PennNationalMember_518ce71d-4971-4397-9171-3f4c0986e7cc" xlink:href="vici-20200930.xsd#vici_PennNationalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a4bdacd5-7292-4fad-bec3-a9d347f3e121" xlink:to="loc_vici_PennNationalMember_518ce71d-4971-4397-9171-3f4c0986e7cc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_JackEntertainmentMember_c2a28274-765e-454e-9c41-3c771d89fa13" xlink:href="vici-20200930.xsd#vici_JackEntertainmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a4bdacd5-7292-4fad-bec3-a9d347f3e121" xlink:to="loc_vici_JackEntertainmentMember_c2a28274-765e-454e-9c41-3c771d89fa13" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_e8b85284-3f06-4771-a2e7-0d9771d595ec" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_e8b85284-3f06-4771-a2e7-0d9771d595ec" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_e8b85284-3f06-4771-a2e7-0d9771d595ec_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_e8b85284-3f06-4771-a2e7-0d9771d595ec" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_e8b85284-3f06-4771-a2e7-0d9771d595ec_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_4c9d9eb9-f319-482d-9392-053b141d32e7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_e8b85284-3f06-4771-a2e7-0d9771d595ec" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_4c9d9eb9-f319-482d-9392-053b141d32e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HarrahsRenoAssetMember_fe6df009-1ddb-4ba8-a073-6e40071d3317" xlink:href="vici-20200930.xsd#vici_HarrahsRenoAssetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_4c9d9eb9-f319-482d-9392-053b141d32e7" xlink:to="loc_vici_HarrahsRenoAssetMember_fe6df009-1ddb-4ba8-a073-6e40071d3317" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LouisianaDownsMember_2641fe8c-bea7-46a3-98b5-ed5f1f2c6dec" xlink:href="vici-20200930.xsd#vici_LouisianaDownsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_4c9d9eb9-f319-482d-9392-053b141d32e7" xlink:to="loc_vici_LouisianaDownsMember_2641fe8c-bea7-46a3-98b5-ed5f1f2c6dec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_BallysAtlanticCityHotelAndCasinoMember_45be78c9-42b6-4400-b9bb-c2965caa734f" xlink:href="vici-20200930.xsd#vici_BallysAtlanticCityHotelAndCasinoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_4c9d9eb9-f319-482d-9392-053b141d32e7" xlink:to="loc_vici_BallysAtlanticCityHotelAndCasinoMember_45be78c9-42b6-4400-b9bb-c2965caa734f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_157796d1-199b-4abd-9294-d9316b33be15" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_157796d1-199b-4abd-9294-d9316b33be15" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_157796d1-199b-4abd-9294-d9316b33be15_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_157796d1-199b-4abd-9294-d9316b33be15" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_157796d1-199b-4abd-9294-d9316b33be15_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_6993d0c4-3aee-4a10-94fe-daab6fd131f7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_157796d1-199b-4abd-9294-d9316b33be15" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_6993d0c4-3aee-4a10-94fe-daab6fd131f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_27649fd2-4a91-4683-b195-dca0b7668432" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DiscontinuedOperationsDisposedOfBySaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_6993d0c4-3aee-4a10-94fe-daab6fd131f7" xlink:to="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_27649fd2-4a91-4683-b195-dca0b7668432" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_a14a3702-9e8a-49eb-91ce-33b0b11c66ac" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_srt_RangeAxis_a14a3702-9e8a-49eb-91ce-33b0b11c66ac" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_a14a3702-9e8a-49eb-91ce-33b0b11c66ac_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_a14a3702-9e8a-49eb-91ce-33b0b11c66ac" xlink:to="loc_srt_RangeMember_a14a3702-9e8a-49eb-91ce-33b0b11c66ac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_11f34c94-32e4-4c4a-85c0-fb7a158dd1fd" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_a14a3702-9e8a-49eb-91ce-33b0b11c66ac" xlink:to="loc_srt_RangeMember_11f34c94-32e4-4c4a-85c0-fb7a158dd1fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_2db784af-960b-44ee-94e5-a2a27d1deafb" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_11f34c94-32e4-4c4a-85c0-fb7a158dd1fd" xlink:to="loc_srt_MinimumMember_2db784af-960b-44ee-94e5-a2a27d1deafb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_d963f1d7-1073-42ef-8c53-ad07e94a77ff" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_11f34c94-32e4-4c4a-85c0-fb7a158dd1fd" xlink:to="loc_srt_MaximumMember_d963f1d7-1073-42ef-8c53-ad07e94a77ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_08f45532-005c-4d09-a34d-f88024f95953" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_srt_StatementScenarioAxis_08f45532-005c-4d09-a34d-f88024f95953" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_08f45532-005c-4d09-a34d-f88024f95953_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_08f45532-005c-4d09-a34d-f88024f95953" xlink:to="loc_srt_ScenarioUnspecifiedDomain_08f45532-005c-4d09-a34d-f88024f95953_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_ea81bc1b-25fb-49f5-b1d2-cfe360aaf815" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_08f45532-005c-4d09-a34d-f88024f95953" xlink:to="loc_srt_ScenarioUnspecifiedDomain_ea81bc1b-25fb-49f5-b1d2-cfe360aaf815" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_d73bfef6-2264-4ca6-b13c-a0112fb87b30" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_ea81bc1b-25fb-49f5-b1d2-cfe360aaf815" xlink:to="loc_srt_ScenarioForecastMember_d73bfef6-2264-4ca6-b13c-a0112fb87b30" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScenarioPlanMember_c9ce3b68-4842-4ffe-b045-7bdaa723ebf4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScenarioPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_ea81bc1b-25fb-49f5-b1d2-cfe360aaf815" xlink:to="loc_us-gaap_ScenarioPlanMember_c9ce3b68-4842-4ffe-b045-7bdaa723ebf4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScenarioAdjustmentMember_5387f7a3-da3b-4613-85f8-a5a491f08ed4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScenarioAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_ea81bc1b-25fb-49f5-b1d2-cfe360aaf815" xlink:to="loc_us-gaap_ScenarioAdjustmentMember_5387f7a3-da3b-4613-85f8-a5a491f08ed4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_a6bdd024-9f5b-47f8-bb61-3124644579aa" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_24f4edc3-26c1-4aff-8446-200efb0182e0" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_a6bdd024-9f5b-47f8-bb61-3124644579aa" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_a6bdd024-9f5b-47f8-bb61-3124644579aa_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_a6bdd024-9f5b-47f8-bb61-3124644579aa" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_a6bdd024-9f5b-47f8-bb61-3124644579aa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_134cd3da-91e8-4fb2-97c2-37baf13c8769" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_a6bdd024-9f5b-47f8-bb61-3124644579aa" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_134cd3da-91e8-4fb2-97c2-37baf13c8769" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember_95c75f77-fa67-4636-8fec-6bda963c57da" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_134cd3da-91e8-4fb2-97c2-37baf13c8769" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember_95c75f77-fa67-4636-8fec-6bda963c57da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember_8cd7f48f-1934-4bde-b43d-bc37e4e3f71b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_134cd3da-91e8-4fb2-97c2-37baf13c8769" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember_8cd7f48f-1934-4bde-b43d-bc37e4e3f71b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_ede272ba-f623-4695-88c4-0f7373b5a4ed" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_134cd3da-91e8-4fb2-97c2-37baf13c8769" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_ede272ba-f623-4695-88c4-0f7373b5a4ed" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/RealEstatePortfolio" xlink:type="simple" xlink:href="vici-20200930.xsd#RealEstatePortfolio"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/RealEstatePortfolio" xlink:type="extended" id="i20b7183bcde7460bbfe8a6eae7e385b9_RealEstatePortfolio"/>
  <link:roleRef roleURI="http://viciproperties.com/role/RealEstatePortfolioTables" xlink:type="simple" xlink:href="vici-20200930.xsd#RealEstatePortfolioTables"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/RealEstatePortfolioTables" xlink:type="extended" id="i27dd665a53534f6a86c1bcb1a0c0b5cd_RealEstatePortfolioTables"/>
  <link:roleRef roleURI="http://viciproperties.com/role/RealEstatePortfolioNarrativeDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#RealEstatePortfolioNarrativeDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/RealEstatePortfolioNarrativeDetails" xlink:type="extended" id="i0cd436154b974fae810514138c63426d_RealEstatePortfolioNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_eeea14da-528a-4c16-acbf-f6ec09fee76f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SalesTypeLeaseNumberOfCasinos_4126019a-46d1-45a5-ac1a-3d705a3d573b" xlink:href="vici-20200930.xsd#vici_SalesTypeLeaseNumberOfCasinos"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_eeea14da-528a-4c16-acbf-f6ec09fee76f" xlink:to="loc_vici_SalesTypeLeaseNumberOfCasinos_4126019a-46d1-45a5-ac1a-3d705a3d573b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SalesTypeLeaseNumberOfLeaseArrangements_eccb5ffc-a398-4c4e-9a5e-6dcac905c426" xlink:href="vici-20200930.xsd#vici_SalesTypeLeaseNumberOfLeaseArrangements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_eeea14da-528a-4c16-acbf-f6ec09fee76f" xlink:to="loc_vici_SalesTypeLeaseNumberOfLeaseArrangements_eccb5ffc-a398-4c4e-9a5e-6dcac905c426" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivableInvestmentInLeaseNumberOfCasinos_f0cf6340-e0a9-4cc7-98f2-a20ee379798d" xlink:href="vici-20200930.xsd#vici_FinancingReceivableInvestmentInLeaseNumberOfCasinos"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_eeea14da-528a-4c16-acbf-f6ec09fee76f" xlink:to="loc_vici_FinancingReceivableInvestmentInLeaseNumberOfCasinos_f0cf6340-e0a9-4cc7-98f2-a20ee379798d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_0661f105-ac10-48e1-baa3-f074ab3efacf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_eeea14da-528a-4c16-acbf-f6ec09fee76f" xlink:to="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_0661f105-ac10-48e1-baa3-f074ab3efacf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_76475bb4-880a-4a8a-8fa1-1fcc1b0c23a8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_0661f105-ac10-48e1-baa3-f074ab3efacf" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_76475bb4-880a-4a8a-8fa1-1fcc1b0c23a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_76475bb4-880a-4a8a-8fa1-1fcc1b0c23a8_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_76475bb4-880a-4a8a-8fa1-1fcc1b0c23a8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_76475bb4-880a-4a8a-8fa1-1fcc1b0c23a8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ddb1bf4d-13fb-4120-9c76-c32bcdb7f886" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_76475bb4-880a-4a8a-8fa1-1fcc1b0c23a8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ddb1bf4d-13fb-4120-9c76-c32bcdb7f886" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_JACKCincinnatiLeaseAgreementMember_0295c6c0-51ea-4bc8-9a37-93676551e048" xlink:href="vici-20200930.xsd#vici_JACKCincinnatiLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ddb1bf4d-13fb-4120-9c76-c32bcdb7f886" xlink:to="loc_vici_JACKCincinnatiLeaseAgreementMember_0295c6c0-51ea-4bc8-9a37-93676551e048" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/RealEstatePortfolioScheduleRealEstatePortfolioDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#RealEstatePortfolioScheduleRealEstatePortfolioDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/RealEstatePortfolioScheduleRealEstatePortfolioDetails" xlink:type="extended" id="ie1642a787fde40e186bab7ee93b476f4_RealEstatePortfolioScheduleRealEstatePortfolioDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivable_deb8d3cc-ac74-4e5e-ac81-5009569c0d7d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivable_deb8d3cc-ac74-4e5e-ac81-5009569c0d7d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DirectFinancingLeaseUnguaranteedResidualAsset_9ce875cd-0167-4673-bd8f-53cdb8506415" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DirectFinancingLeaseUnguaranteedResidualAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_us-gaap_DirectFinancingLeaseUnguaranteedResidualAsset_9ce875cd-0167-4673-bd8f-53cdb8506415" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_GrossInvestmentInDirectFinancingAndSalesTypeLeases_1c2457cc-f88c-41a4-b0b1-0f88fda39288" xlink:href="vici-20200930.xsd#vici_GrossInvestmentInDirectFinancingAndSalesTypeLeases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_vici_GrossInvestmentInDirectFinancingAndSalesTypeLeases_1c2457cc-f88c-41a4-b0b1-0f88fda39288" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DirectFinancingLeaseUnamortizedInitialDirectCosts_164a4e60-0bd9-49bb-84fe-c1a66f6c5e18" xlink:href="vici-20200930.xsd#vici_DirectFinancingLeaseUnamortizedInitialDirectCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_vici_DirectFinancingLeaseUnamortizedInitialDirectCosts_164a4e60-0bd9-49bb-84fe-c1a66f6c5e18" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_UnearnedIncome_8439a46f-aacf-433d-9572-96ced7c09276" xlink:href="vici-20200930.xsd#vici_UnearnedIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_vici_UnearnedIncome_8439a46f-aacf-433d-9572-96ced7c09276" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLoss_112c080e-79e2-4215-ad64-83a425790e05" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetInvestmentInLeaseAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLoss_112c080e-79e2-4215-ad64-83a425790e05" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentInLease_f81abd07-c86b-48fb-bc95-019de75558dc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetInvestmentInLease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_us-gaap_NetInvestmentInLease_f81abd07-c86b-48fb-bc95-019de75558dc" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyAtCost_4217ed3e-efc0-4df9-802f-2fee7e1a749a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateInvestmentPropertyAtCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_us-gaap_RealEstateInvestmentPropertyAtCost_4217ed3e-efc0-4df9-802f-2fee7e1a749a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_d81bb326-5ef1-4ee2-af6f-7d10eb514de4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_us-gaap_NotesReceivableNet_d81bb326-5ef1-4ee2-af6f-7d10eb514de4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivablesOperatingLeasesNetInvestmentInLeaseBeforeInvestmentInLoans_8daf471c-af4c-48f4-8a41-a14adb68cd24" xlink:href="vici-20200930.xsd#vici_FinancingReceivablesOperatingLeasesNetInvestmentInLeaseBeforeInvestmentInLoans"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_vici_FinancingReceivablesOperatingLeasesNetInvestmentInLeaseBeforeInvestmentInLoans_8daf471c-af4c-48f4-8a41-a14adb68cd24" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_f70b320b-037f-403f-a618-d21b2c5cc264" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesReceivableNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandAvailableForDevelopment_63451115-d986-4727-a23e-166de30dc1dc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LandAvailableForDevelopment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_us-gaap_LandAvailableForDevelopment_63451115-d986-4727-a23e-166de30dc1dc" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestments_41446a4d-bb96-4e3e-aa70-18a19b7924b1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_us-gaap_RealEstateInvestments_41446a4d-bb96-4e3e-aa70-18a19b7924b1" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_1945ddce-6367-4533-9840-5447b8784967" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_fc565b70-45a2-45a0-9c79-8934569516c6" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_1945ddce-6367-4533-9840-5447b8784967" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_ba177a76-845b-4e4c-8d6f-373e01817049" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_1945ddce-6367-4533-9840-5447b8784967" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_ba177a76-845b-4e4c-8d6f-373e01817049" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_ba177a76-845b-4e4c-8d6f-373e01817049_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_ba177a76-845b-4e4c-8d6f-373e01817049" xlink:to="loc_us-gaap_ReceivableTypeDomain_ba177a76-845b-4e4c-8d6f-373e01817049_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_012e760c-8a9b-4749-bbef-548de6855797" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_ba177a76-845b-4e4c-8d6f-373e01817049" xlink:to="loc_us-gaap_ReceivableTypeDomain_012e760c-8a9b-4749-bbef-548de6855797" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceReceivablesMember_a3d0ab6d-0410-4035-901d-6cfa028e8400" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_012e760c-8a9b-4749-bbef-548de6855797" xlink:to="loc_us-gaap_FinanceReceivablesMember_a3d0ab6d-0410-4035-901d-6cfa028e8400" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableMember_f1b3090e-bf84-4cec-b069-ca65e6c6e6dd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_012e760c-8a9b-4749-bbef-548de6855797" xlink:to="loc_us-gaap_LoansReceivableMember_f1b3090e-bf84-4cec-b069-ca65e6c6e6dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseTypeAxis_204fad88-bbdd-4b28-9203-bc1cfe54f987" xlink:href="vici-20200930.xsd#vici_LeaseTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_1945ddce-6367-4533-9840-5447b8784967" xlink:to="loc_vici_LeaseTypeAxis_204fad88-bbdd-4b28-9203-bc1cfe54f987" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseTypeDomain_204fad88-bbdd-4b28-9203-bc1cfe54f987_default" xlink:href="vici-20200930.xsd#vici_LeaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_vici_LeaseTypeAxis_204fad88-bbdd-4b28-9203-bc1cfe54f987" xlink:to="loc_vici_LeaseTypeDomain_204fad88-bbdd-4b28-9203-bc1cfe54f987_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseTypeDomain_c5832d8c-bb97-43d4-9b8d-40b32f6598b2" xlink:href="vici-20200930.xsd#vici_LeaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_vici_LeaseTypeAxis_204fad88-bbdd-4b28-9203-bc1cfe54f987" xlink:to="loc_vici_LeaseTypeDomain_c5832d8c-bb97-43d4-9b8d-40b32f6598b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DirectFinancingAndSalesTypeMember_a9baa53b-ca9f-4caa-bdab-7255ecf56a3d" xlink:href="vici-20200930.xsd#vici_DirectFinancingAndSalesTypeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseTypeDomain_c5832d8c-bb97-43d4-9b8d-40b32f6598b2" xlink:to="loc_vici_DirectFinancingAndSalesTypeMember_a9baa53b-ca9f-4caa-bdab-7255ecf56a3d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_OperatingLeaseMember_5750d872-45c7-4445-adcb-b7c48482f621" xlink:href="vici-20200930.xsd#vici_OperatingLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseTypeDomain_c5832d8c-bb97-43d4-9b8d-40b32f6598b2" xlink:to="loc_vici_OperatingLeaseMember_5750d872-45c7-4445-adcb-b7c48482f621" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/RealEstatePortfolioScheduleofComponentsofDirectFinancingandOperatingLeasesDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#RealEstatePortfolioScheduleofComponentsofDirectFinancingandOperatingLeasesDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/RealEstatePortfolioScheduleofComponentsofDirectFinancingandOperatingLeasesDetails" xlink:type="extended" id="i99a25f85169146e9890f250f4155a3d2_RealEstatePortfolioScheduleofComponentsofDirectFinancingandOperatingLeasesDetails"/>
  <link:roleRef roleURI="http://viciproperties.com/role/RealEstatePortfolioScheduleofFutureMinimumLeasePaymentsDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#RealEstatePortfolioScheduleofFutureMinimumLeasePaymentsDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/RealEstatePortfolioScheduleofFutureMinimumLeasePaymentsDetails" xlink:type="extended" id="ia68f55de48854f009024d9ac3d9393ff_RealEstatePortfolioScheduleofFutureMinimumLeasePaymentsDetails"/>
  <link:roleRef roleURI="http://viciproperties.com/role/RealEstatePortfolioScheduleofLeaseAgreementDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#RealEstatePortfolioScheduleofLeaseAgreementDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/RealEstatePortfolioScheduleofLeaseAgreementDetails" xlink:type="extended" id="i3263cb415a594bc38b478ad5baf7f64b_RealEstatePortfolioScheduleofLeaseAgreementDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorSalesTypeAndDirectFinancingLeaseInitialTermOfContract_96c6a99c-656a-4ded-b80a-55d445d5a1ef" xlink:href="vici-20200930.xsd#vici_LessorSalesTypeAndDirectFinancingLeaseInitialTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LessorSalesTypeAndDirectFinancingLeaseInitialTermOfContract_96c6a99c-656a-4ded-b80a-55d445d5a1ef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorLeasingArrangementsSalestypeDirectFinancingLeaseNumberOfRenewalOptions_e978cb7b-1839-4fae-af07-6fc366049c30" xlink:href="vici-20200930.xsd#vici_LessorLeasingArrangementsSalestypeDirectFinancingLeaseNumberOfRenewalOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LessorLeasingArrangementsSalestypeDirectFinancingLeaseNumberOfRenewalOptions_e978cb7b-1839-4fae-af07-6fc366049c30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorSalesTypeLeaseRenewalTerm1_bb692a93-4a4e-4436-9e02-1b71fea86a9c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LessorSalesTypeLeaseRenewalTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_us-gaap_LessorSalesTypeLeaseRenewalTerm1_bb692a93-4a4e-4436-9e02-1b71fea86a9c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorCurrentBaseRent_ea4731d7-a7de-407e-9d5e-ab373c575e80" xlink:href="vici-20200930.xsd#vici_LessorCurrentBaseRent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LessorCurrentBaseRent_ea4731d7-a7de-407e-9d5e-ab373c575e80" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorPercentageofConsumerPriceIndex_cc5b9796-7bde-4b55-af3d-99236dc71eed" xlink:href="vici-20200930.xsd#vici_LessorPercentageofConsumerPriceIndex"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LessorPercentageofConsumerPriceIndex_cc5b9796-7bde-4b55-af3d-99236dc71eed" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseAgreementAmountOfPercentageBaseRent_297a653e-ccf3-4d48-8bea-2c635636f18a" xlink:href="vici-20200930.xsd#vici_LeaseAgreementAmountOfPercentageBaseRent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LeaseAgreementAmountOfPercentageBaseRent_297a653e-ccf3-4d48-8bea-2c635636f18a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorLeasingArrangementsPercentageOfEBITDARToRentRatioFloor_9c35aad3-f4b6-48b9-9080-3dc4e79653fb" xlink:href="vici-20200930.xsd#vici_LessorLeasingArrangementsPercentageOfEBITDARToRentRatioFloor"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LessorLeasingArrangementsPercentageOfEBITDARToRentRatioFloor_9c35aad3-f4b6-48b9-9080-3dc4e79653fb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseArrangementPercentageOfVariableRentSplit_e2e5c58a-f024-408b-9d81-3e1b5ac021b9" xlink:href="vici-20200930.xsd#vici_LeaseArrangementPercentageOfVariableRentSplit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LeaseArrangementPercentageOfVariableRentSplit_e2e5c58a-f024-408b-9d81-3e1b5ac021b9" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorSalestypeDirectFinancingLeaseRenewalTerm_e72db0ed-9830-489e-8aa9-d0a359470c17" xlink:href="vici-20200930.xsd#vici_LessorSalestypeDirectFinancingLeaseRenewalTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LessorSalestypeDirectFinancingLeaseRenewalTerm_e72db0ed-9830-489e-8aa9-d0a359470c17" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorSalestypeDirectFinancingLeasePercentageRentMultiplier_bb664fd7-1fbb-4fd0-be70-73c7df401575" xlink:href="vici-20200930.xsd#vici_LessorSalestypeDirectFinancingLeasePercentageRentMultiplier"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LessorSalestypeDirectFinancingLeasePercentageRentMultiplier_bb664fd7-1fbb-4fd0-be70-73c7df401575" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorLeasingArrangementsVariableRentPercentage_a61d9457-6c20-4c2a-adf1-113329285dee" xlink:href="vici-20200930.xsd#vici_LessorLeasingArrangementsVariableRentPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LessorLeasingArrangementsVariableRentPercentage_a61d9457-6c20-4c2a-adf1-113329285dee" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorCurrentAnnualRent_9eb57acd-a8db-4c54-aeca-2e672b6bca54" xlink:href="vici-20200930.xsd#vici_LessorCurrentAnnualRent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LessorCurrentAnnualRent_9eb57acd-a8db-4c54-aeca-2e672b6bca54" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorContingentRent_c7303b83-eb6c-4b92-bec2-b9570e1a5932" xlink:href="vici-20200930.xsd#vici_LessorContingentRent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LessorContingentRent_c7303b83-eb6c-4b92-bec2-b9570e1a5932" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorSalestypeDirectFinancingLeasePeriodOfRevenueOfRentMultiplier_161b5fb3-23c2-4773-b608-1fd04428ab95" xlink:href="vici-20200930.xsd#vici_LessorSalestypeDirectFinancingLeasePeriodOfRevenueOfRentMultiplier"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LessorSalestypeDirectFinancingLeasePeriodOfRevenueOfRentMultiplier_161b5fb3-23c2-4773-b608-1fd04428ab95" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LessorSalestypeDirectFinancingLeasePercentageOfRentRevenuePriorToAcquisition_949462eb-bdb7-4006-8846-efaa46023079" xlink:href="vici-20200930.xsd#vici_LessorSalestypeDirectFinancingLeasePercentageOfRentRevenuePriorToAcquisition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_vici_LessorSalestypeDirectFinancingLeasePercentageOfRentRevenuePriorToAcquisition_949462eb-bdb7-4006-8846-efaa46023079" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_3bf3f23f-bb87-4cd7-b0b8-80d070ed5dc8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_ba1fc017-9475-437d-8dae-8cc2f2de6ba4" xlink:to="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_3bf3f23f-bb87-4cd7-b0b8-80d070ed5dc8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_87bf7dac-17b1-46f5-ac88-3107618417d4" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_3bf3f23f-bb87-4cd7-b0b8-80d070ed5dc8" xlink:to="loc_dei_LegalEntityAxis_87bf7dac-17b1-46f5-ac88-3107618417d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_87bf7dac-17b1-46f5-ac88-3107618417d4_default" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_87bf7dac-17b1-46f5-ac88-3107618417d4" xlink:to="loc_dei_EntityDomain_87bf7dac-17b1-46f5-ac88-3107618417d4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5006eb9a-1154-4527-b545-162241c09b09" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_87bf7dac-17b1-46f5-ac88-3107618417d4" xlink:to="loc_dei_EntityDomain_5006eb9a-1154-4527-b545-162241c09b09" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_PennNationalMember_7b72740e-5cfe-4aba-980b-da22f74f9b64" xlink:href="vici-20200930.xsd#vici_PennNationalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5006eb9a-1154-4527-b545-162241c09b09" xlink:to="loc_vici_PennNationalMember_7b72740e-5cfe-4aba-980b-da22f74f9b64" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_bd9f84e6-016e-4fe7-96d3-673fd6acc15d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_3bf3f23f-bb87-4cd7-b0b8-80d070ed5dc8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_bd9f84e6-016e-4fe7-96d3-673fd6acc15d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_bd9f84e6-016e-4fe7-96d3-673fd6acc15d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_bd9f84e6-016e-4fe7-96d3-673fd6acc15d" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_bd9f84e6-016e-4fe7-96d3-673fd6acc15d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_bd9f84e6-016e-4fe7-96d3-673fd6acc15d" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NonCPLVLeaseandJolietLeaseMember_14e68d44-f47e-4c67-aeb5-932c951759e9" xlink:href="vici-20200930.xsd#vici_NonCPLVLeaseandJolietLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_NonCPLVLeaseandJolietLeaseMember_14e68d44-f47e-4c67-aeb5-932c951759e9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_RegionalMasterLeaseAgreementAndJolietLeaseAgreementMember_32a94728-16f3-47fa-90d0-da02540d8351" xlink:href="vici-20200930.xsd#vici_RegionalMasterLeaseAgreementAndJolietLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_RegionalMasterLeaseAgreementAndJolietLeaseAgreementMember_32a94728-16f3-47fa-90d0-da02540d8351" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LasVegasMasterLeaseMember_aff8b215-b8c8-4f85-9964-7323dbb2f095" xlink:href="vici-20200930.xsd#vici_LasVegasMasterLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_LasVegasMasterLeaseMember_aff8b215-b8c8-4f85-9964-7323dbb2f095" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HLVLeaseMember_31912251-0bb4-4aa6-9ec0-f8efc63075db" xlink:href="vici-20200930.xsd#vici_HLVLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_HLVLeaseMember_31912251-0bb4-4aa6-9ec0-f8efc63075db" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LasVegasMasterLeaseAgreementMember_47ae8d1c-1c75-436d-8600-a13d922309fa" xlink:href="vici-20200930.xsd#vici_LasVegasMasterLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_LasVegasMasterLeaseAgreementMember_47ae8d1c-1c75-436d-8600-a13d922309fa" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CeaserLeaseAgreementMember_67476464-dbc5-4775-aca1-6068fdd1c77b" xlink:href="vici-20200930.xsd#vici_CeaserLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_CeaserLeaseAgreementMember_67476464-dbc5-4775-aca1-6068fdd1c77b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NonCPLVLeaseAgreementMember_0b42c1f7-39fc-43e1-8b19-c08aa537bf75" xlink:href="vici-20200930.xsd#vici_NonCPLVLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_NonCPLVLeaseAgreementMember_0b42c1f7-39fc-43e1-8b19-c08aa537bf75" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_MagaritavilleLeaseMember_f37d7658-966d-423c-b51c-9ecaf36a7447" xlink:href="vici-20200930.xsd#vici_MagaritavilleLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_MagaritavilleLeaseMember_f37d7658-966d-423c-b51c-9ecaf36a7447" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_GreektownleaseAgreementMember_9bb7524c-7722-4e84-9bb9-095e3fcf2d8f" xlink:href="vici-20200930.xsd#vici_GreektownleaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_GreektownleaseAgreementMember_9bb7524c-7722-4e84-9bb9-095e3fcf2d8f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_JACKCincinnatiLeaseAgreementMember_c80d41ec-f3a3-4afc-ab81-960ea5b8cead" xlink:href="vici-20200930.xsd#vici_JACKCincinnatiLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_JACKCincinnatiLeaseAgreementMember_c80d41ec-f3a3-4afc-ab81-960ea5b8cead" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_JACKClevelandThirstledownLeaseAgreementMember_d0421c83-cf1a-4db7-a1db-ec6ee072c5b0" xlink:href="vici-20200930.xsd#vici_JACKClevelandThirstledownLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_JACKClevelandThirstledownLeaseAgreementMember_d0421c83-cf1a-4db7-a1db-ec6ee072c5b0" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CenturyPortfolioLeaseAgreementMember_76271857-75f3-42fb-979a-ab881232156b" xlink:href="vici-20200930.xsd#vici_CenturyPortfolioLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_CenturyPortfolioLeaseAgreementMember_76271857-75f3-42fb-979a-ab881232156b" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HardRockCincinnatiLeaseAgreementMember_8009485f-5c7e-4ab1-91f6-803286f73cee" xlink:href="vici-20200930.xsd#vici_HardRockCincinnatiLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e5466d88-e818-4475-a3b4-3a2c9a299752" xlink:to="loc_vici_HardRockCincinnatiLeaseAgreementMember_8009485f-5c7e-4ab1-91f6-803286f73cee" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAxis_c44b27b9-f1e3-4237-af9f-13c1d563e060" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_3bf3f23f-bb87-4cd7-b0b8-80d070ed5dc8" xlink:to="loc_srt_RestatementAxis_c44b27b9-f1e3-4237-af9f-13c1d563e060" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_c44b27b9-f1e3-4237-af9f-13c1d563e060_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_c44b27b9-f1e3-4237-af9f-13c1d563e060" xlink:to="loc_srt_RestatementDomain_c44b27b9-f1e3-4237-af9f-13c1d563e060_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_33f65f8f-9535-4c22-80c7-bcaf6e93c3d3" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_c44b27b9-f1e3-4237-af9f-13c1d563e060" xlink:to="loc_srt_RestatementDomain_33f65f8f-9535-4c22-80c7-bcaf6e93c3d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioPreviouslyReportedMember_9abeea1b-d72d-4cde-849c-bc66a830a640" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioPreviouslyReportedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_33f65f8f-9535-4c22-80c7-bcaf6e93c3d3" xlink:to="loc_srt_ScenarioPreviouslyReportedMember_9abeea1b-d72d-4cde-849c-bc66a830a640" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYearAxis_9c89cd8a-ba95-4d70-a07c-7389a0791e11" xlink:href="vici-20200930.xsd#vici_LeaseYearAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_3bf3f23f-bb87-4cd7-b0b8-80d070ed5dc8" xlink:to="loc_vici_LeaseYearAxis_9c89cd8a-ba95-4d70-a07c-7389a0791e11" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYearDomain_9c89cd8a-ba95-4d70-a07c-7389a0791e11_default" xlink:href="vici-20200930.xsd#vici_LeaseYearDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_vici_LeaseYearAxis_9c89cd8a-ba95-4d70-a07c-7389a0791e11" xlink:to="loc_vici_LeaseYearDomain_9c89cd8a-ba95-4d70-a07c-7389a0791e11_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYearDomain_1fe8c7b9-475e-4a37-888c-f1e64685d3da" xlink:href="vici-20200930.xsd#vici_LeaseYearDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_vici_LeaseYearAxis_9c89cd8a-ba95-4d70-a07c-7389a0791e11" xlink:to="loc_vici_LeaseYearDomain_1fe8c7b9-475e-4a37-888c-f1e64685d3da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYears2Through5Member_acecef5f-28b2-47e7-be53-9bf4c75adb6d" xlink:href="vici-20200930.xsd#vici_LeaseYears2Through5Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseYearDomain_1fe8c7b9-475e-4a37-888c-f1e64685d3da" xlink:to="loc_vici_LeaseYears2Through5Member_acecef5f-28b2-47e7-be53-9bf4c75adb6d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYears6Through15Member_7501bd0e-94c4-49c3-a6d0-ff8438549469" xlink:href="vici-20200930.xsd#vici_LeaseYears6Through15Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseYearDomain_1fe8c7b9-475e-4a37-888c-f1e64685d3da" xlink:to="loc_vici_LeaseYears6Through15Member_7501bd0e-94c4-49c3-a6d0-ff8438549469" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYears8Through10Member_a98246a9-e9b0-4be2-8427-10cd816fdec9" xlink:href="vici-20200930.xsd#vici_LeaseYears8Through10Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseYearDomain_1fe8c7b9-475e-4a37-888c-f1e64685d3da" xlink:to="loc_vici_LeaseYears8Through10Member_a98246a9-e9b0-4be2-8427-10cd816fdec9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYears11Through15Member_12ce3ec2-28e8-4a6a-bae3-250367a9d652" xlink:href="vici-20200930.xsd#vici_LeaseYears11Through15Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseYearDomain_1fe8c7b9-475e-4a37-888c-f1e64685d3da" xlink:to="loc_vici_LeaseYears11Through15Member_12ce3ec2-28e8-4a6a-bae3-250367a9d652" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYears2through4Member_63df5c83-dfd5-4efa-b294-d8f8d4a2d39e" xlink:href="vici-20200930.xsd#vici_LeaseYears2through4Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseYearDomain_1fe8c7b9-475e-4a37-888c-f1e64685d3da" xlink:to="loc_vici_LeaseYears2through4Member_63df5c83-dfd5-4efa-b294-d8f8d4a2d39e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYears5Through15Member_506f42ef-b98a-4af3-99f2-ad7d13f09f59" xlink:href="vici-20200930.xsd#vici_LeaseYears5Through15Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseYearDomain_1fe8c7b9-475e-4a37-888c-f1e64685d3da" xlink:to="loc_vici_LeaseYears5Through15Member_506f42ef-b98a-4af3-99f2-ad7d13f09f59" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYears2through3Member_3463d0ec-01c4-4cf6-8bf6-3ffe24cbc5c7" xlink:href="vici-20200930.xsd#vici_LeaseYears2through3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseYearDomain_1fe8c7b9-475e-4a37-888c-f1e64685d3da" xlink:to="loc_vici_LeaseYears2through3Member_3463d0ec-01c4-4cf6-8bf6-3ffe24cbc5c7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYears4through6Member_21d5a279-403b-45ae-9d28-f02e54c64930" xlink:href="vici-20200930.xsd#vici_LeaseYears4through6Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseYearDomain_1fe8c7b9-475e-4a37-888c-f1e64685d3da" xlink:to="loc_vici_LeaseYears4through6Member_21d5a279-403b-45ae-9d28-f02e54c64930" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYears7through15Member_eef74fb7-88ee-4b0c-b6c9-169966f7d869" xlink:href="vici-20200930.xsd#vici_LeaseYears7through15Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseYearDomain_1fe8c7b9-475e-4a37-888c-f1e64685d3da" xlink:to="loc_vici_LeaseYears7through15Member_eef74fb7-88ee-4b0c-b6c9-169966f7d869" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYears4Through15Member_d7fa9aaa-e29c-4e75-b8d8-fa723a20c5c6" xlink:href="vici-20200930.xsd#vici_LeaseYears4Through15Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseYearDomain_1fe8c7b9-475e-4a37-888c-f1e64685d3da" xlink:to="loc_vici_LeaseYears4Through15Member_d7fa9aaa-e29c-4e75-b8d8-fa723a20c5c6" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_b20993e6-01d3-4046-9b8c-58584a19753c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_3bf3f23f-bb87-4cd7-b0b8-80d070ed5dc8" xlink:to="loc_us-gaap_VariableRateAxis_b20993e6-01d3-4046-9b8c-58584a19753c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_b20993e6-01d3-4046-9b8c-58584a19753c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_b20993e6-01d3-4046-9b8c-58584a19753c" xlink:to="loc_us-gaap_VariableRateDomain_b20993e6-01d3-4046-9b8c-58584a19753c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_2c01d574-44e0-4283-9310-316918d2b49e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_b20993e6-01d3-4046-9b8c-58584a19753c" xlink:to="loc_us-gaap_VariableRateDomain_2c01d574-44e0-4283-9310-316918d2b49e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_BaseRentMember_081f6804-b132-450e-ad54-eda628bcd142" xlink:href="vici-20200930.xsd#vici_BaseRentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_2c01d574-44e0-4283-9310-316918d2b49e" xlink:to="loc_vici_BaseRentMember_081f6804-b132-450e-ad54-eda628bcd142" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_VariableRentMember_f9e3d633-7afd-42da-b2db-98749840ec16" xlink:href="vici-20200930.xsd#vici_VariableRentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_2c01d574-44e0-4283-9310-316918d2b49e" xlink:to="loc_vici_VariableRentMember_f9e3d633-7afd-42da-b2db-98749840ec16" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_b818580a-38cf-4263-b5f8-d28c19671b34" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_3bf3f23f-bb87-4cd7-b0b8-80d070ed5dc8" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_b818580a-38cf-4263-b5f8-d28c19671b34" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b818580a-38cf-4263-b5f8-d28c19671b34_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_b818580a-38cf-4263-b5f8-d28c19671b34" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_b818580a-38cf-4263-b5f8-d28c19671b34_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8b009200-ae17-44b7-a98c-c9a91bb1c3a4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_b818580a-38cf-4263-b5f8-d28c19671b34" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8b009200-ae17-44b7-a98c-c9a91bb1c3a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_JACKCincinnatiCasinoMember_80631448-ac93-4302-a300-72e841a3089a" xlink:href="vici-20200930.xsd#vici_JACKCincinnatiCasinoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8b009200-ae17-44b7-a98c-c9a91bb1c3a4" xlink:to="loc_vici_JACKCincinnatiCasinoMember_80631448-ac93-4302-a300-72e841a3089a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_JACKClevelandandThistledownAcquisitionMember_debc6fbc-f80f-48e8-8961-86f0e482db4d" xlink:href="vici-20200930.xsd#vici_JACKClevelandandThistledownAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8b009200-ae17-44b7-a98c-c9a91bb1c3a4" xlink:to="loc_vici_JACKClevelandandThistledownAcquisitionMember_debc6fbc-f80f-48e8-8961-86f0e482db4d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CenturyPortfolioMember_7c4a930d-4c27-4eab-8a5c-33d707e0cc33" xlink:href="vici-20200930.xsd#vici_CenturyPortfolioMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8b009200-ae17-44b7-a98c-c9a91bb1c3a4" xlink:to="loc_vici_CenturyPortfolioMember_7c4a930d-4c27-4eab-8a5c-33d707e0cc33" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_PennNationalMember_82090653-51d5-4ee0-a040-9d392460d98c" xlink:href="vici-20200930.xsd#vici_PennNationalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8b009200-ae17-44b7-a98c-c9a91bb1c3a4" xlink:to="loc_vici_PennNationalMember_82090653-51d5-4ee0-a040-9d392460d98c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HardRockMember_98c979d7-f68b-4e99-8266-0eaef40df29f" xlink:href="vici-20200930.xsd#vici_HardRockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8b009200-ae17-44b7-a98c-c9a91bb1c3a4" xlink:to="loc_vici_HardRockMember_98c979d7-f68b-4e99-8266-0eaef40df29f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_4992021d-d266-40bf-9145-974a42fb4708" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_3bf3f23f-bb87-4cd7-b0b8-80d070ed5dc8" xlink:to="loc_srt_RangeAxis_4992021d-d266-40bf-9145-974a42fb4708" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_4992021d-d266-40bf-9145-974a42fb4708_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_4992021d-d266-40bf-9145-974a42fb4708" xlink:to="loc_srt_RangeMember_4992021d-d266-40bf-9145-974a42fb4708_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_1fa2e19a-4f92-4806-82f0-5bbe25b7ba12" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_4992021d-d266-40bf-9145-974a42fb4708" xlink:to="loc_srt_RangeMember_1fa2e19a-4f92-4806-82f0-5bbe25b7ba12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_ef46f552-03cb-4533-bad4-2998247da6a3" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_1fa2e19a-4f92-4806-82f0-5bbe25b7ba12" xlink:to="loc_srt_MinimumMember_ef46f552-03cb-4533-bad4-2998247da6a3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_c0bf6b52-0990-47b0-a443-1e5a51937e63" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_1fa2e19a-4f92-4806-82f0-5bbe25b7ba12" xlink:to="loc_srt_MaximumMember_c0bf6b52-0990-47b0-a443-1e5a51937e63" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/RealEstatePortfolioScheduleofCapitalExpenditureRequirementsDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#RealEstatePortfolioScheduleofCapitalExpenditureRequirementsDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/RealEstatePortfolioScheduleofCapitalExpenditureRequirementsDetails" xlink:type="extended" id="iea834ebccbfb4b2cacd4fd07cbf4b0a6_RealEstatePortfolioScheduleofCapitalExpenditureRequirementsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateLineItems_817a3f2c-63fb-4f8f-8110-59729b19562c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_PercentageOfNetRevenueOfYearlyMinimumExpenditure_92ebcf70-a0b5-449a-ac50-b64a88615c96" xlink:href="vici-20200930.xsd#vici_PercentageOfNetRevenueOfYearlyMinimumExpenditure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateLineItems_817a3f2c-63fb-4f8f-8110-59729b19562c" xlink:to="loc_vici_PercentageOfNetRevenueOfYearlyMinimumExpenditure_92ebcf70-a0b5-449a-ac50-b64a88615c96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseAgreementAmountRequiredToBeSpentOnMinimumCapitalExpenditures_ca5dce60-70d6-41f4-9a91-3f488f7cd2f3" xlink:href="vici-20200930.xsd#vici_LeaseAgreementAmountRequiredToBeSpentOnMinimumCapitalExpenditures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateLineItems_817a3f2c-63fb-4f8f-8110-59729b19562c" xlink:to="loc_vici_LeaseAgreementAmountRequiredToBeSpentOnMinimumCapitalExpenditures_ca5dce60-70d6-41f4-9a91-3f488f7cd2f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_AveragePeriodOfYearlyMinimumExpenditure_d81a4ab7-b4db-4d81-913f-4423f77e8a34" xlink:href="vici-20200930.xsd#vici_AveragePeriodOfYearlyMinimumExpenditure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateLineItems_817a3f2c-63fb-4f8f-8110-59729b19562c" xlink:to="loc_vici_AveragePeriodOfYearlyMinimumExpenditure_d81a4ab7-b4db-4d81-913f-4423f77e8a34" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_InitialMinimumCapitalExpenditureDueFromTwoThousandandSeventeenThroughTwoThousandandTwentyOne_4762cc0c-9392-4720-b092-da497e6979b0" xlink:href="vici-20200930.xsd#vici_InitialMinimumCapitalExpenditureDueFromTwoThousandandSeventeenThroughTwoThousandandTwentyOne"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateLineItems_817a3f2c-63fb-4f8f-8110-59729b19562c" xlink:to="loc_vici_InitialMinimumCapitalExpenditureDueFromTwoThousandandSeventeenThroughTwoThousandandTwentyOne_4762cc0c-9392-4720-b092-da497e6979b0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseAgreementAmountOfFloorOfCapitalExpenditures_0748c87c-9138-4c42-90ef-9ad5e748e913" xlink:href="vici-20200930.xsd#vici_LeaseAgreementAmountOfFloorOfCapitalExpenditures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateLineItems_817a3f2c-63fb-4f8f-8110-59729b19562c" xlink:to="loc_vici_LeaseAgreementAmountOfFloorOfCapitalExpenditures_0748c87c-9138-4c42-90ef-9ad5e748e913" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_PercentageOfPriorYearNetRevenuesOfAnnualBuildingAndCapitalImprovements_f3883dbb-b2c8-4963-a8c0-d4ecd9be3fb1" xlink:href="vici-20200930.xsd#vici_PercentageOfPriorYearNetRevenuesOfAnnualBuildingAndCapitalImprovements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateLineItems_817a3f2c-63fb-4f8f-8110-59729b19562c" xlink:to="loc_vici_PercentageOfPriorYearNetRevenuesOfAnnualBuildingAndCapitalImprovements_f3883dbb-b2c8-4963-a8c0-d4ecd9be3fb1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_RealEstateInvestmentsAdditionalCapitalExpenditureRequirementTiedToTheFormationOfLeaseAgreement_9b2c4baf-226c-4fb6-acc1-a8e3393624fb" xlink:href="vici-20200930.xsd#vici_RealEstateInvestmentsAdditionalCapitalExpenditureRequirementTiedToTheFormationOfLeaseAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateLineItems_817a3f2c-63fb-4f8f-8110-59729b19562c" xlink:to="loc_vici_RealEstateInvestmentsAdditionalCapitalExpenditureRequirementTiedToTheFormationOfLeaseAgreement_9b2c4baf-226c-4fb6-acc1-a8e3393624fb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_RealEstateInvestmentsMinimumAmountToBeExpendedAcrossCertainAffiliatesAndOtherAssets_bb0b2b07-f1bd-4bbf-9219-5d04aaa0ddbe" xlink:href="vici-20200930.xsd#vici_RealEstateInvestmentsMinimumAmountToBeExpendedAcrossCertainAffiliatesAndOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateLineItems_817a3f2c-63fb-4f8f-8110-59729b19562c" xlink:to="loc_vici_RealEstateInvestmentsMinimumAmountToBeExpendedAcrossCertainAffiliatesAndOtherAssets_bb0b2b07-f1bd-4bbf-9219-5d04aaa0ddbe" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitment_a827ed93-e325-4ad8-b84a-c78143ad1970" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherCommitment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RealEstateLineItems_817a3f2c-63fb-4f8f-8110-59729b19562c" xlink:to="loc_us-gaap_OtherCommitment_a827ed93-e325-4ad8-b84a-c78143ad1970" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateTable_f8d57ade-e70a-4cfc-b9c4-bbddf02f2eda" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RealEstateLineItems_817a3f2c-63fb-4f8f-8110-59729b19562c" xlink:to="loc_us-gaap_RealEstateTable_f8d57ade-e70a-4cfc-b9c4-bbddf02f2eda" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_72d6e5b2-ecbd-49db-b2a3-235d31ecc871" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RealEstateTable_f8d57ade-e70a-4cfc-b9c4-bbddf02f2eda" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_72d6e5b2-ecbd-49db-b2a3-235d31ecc871" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_72d6e5b2-ecbd-49db-b2a3-235d31ecc871_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_72d6e5b2-ecbd-49db-b2a3-235d31ecc871" xlink:to="loc_us-gaap_RelatedPartyDomain_72d6e5b2-ecbd-49db-b2a3-235d31ecc871_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_d1877e1f-d754-4e36-97fb-722a51a99897" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_72d6e5b2-ecbd-49db-b2a3-235d31ecc871" xlink:to="loc_us-gaap_RelatedPartyDomain_d1877e1f-d754-4e36-97fb-722a51a99897" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CEOCMember_240f1591-5c5e-4dbc-a0e4-98c558bcae88" xlink:href="vici-20200930.xsd#vici_CEOCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_d1877e1f-d754-4e36-97fb-722a51a99897" xlink:to="loc_vici_CEOCMember_240f1591-5c5e-4dbc-a0e4-98c558bcae88" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYearAxis_d3530192-3448-4965-8de9-eb211779d79b" xlink:href="vici-20200930.xsd#vici_LeaseYearAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RealEstateTable_f8d57ade-e70a-4cfc-b9c4-bbddf02f2eda" xlink:to="loc_vici_LeaseYearAxis_d3530192-3448-4965-8de9-eb211779d79b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYearDomain_d3530192-3448-4965-8de9-eb211779d79b_default" xlink:href="vici-20200930.xsd#vici_LeaseYearDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_vici_LeaseYearAxis_d3530192-3448-4965-8de9-eb211779d79b" xlink:to="loc_vici_LeaseYearDomain_d3530192-3448-4965-8de9-eb211779d79b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYearDomain_e49a767b-8a9d-41bb-9056-763e38f0099d" xlink:href="vici-20200930.xsd#vici_LeaseYearDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_vici_LeaseYearAxis_d3530192-3448-4965-8de9-eb211779d79b" xlink:to="loc_vici_LeaseYearDomain_e49a767b-8a9d-41bb-9056-763e38f0099d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYears2through3Member_f8d0c4cc-3218-47d0-9a03-bb45a0761f08" xlink:href="vici-20200930.xsd#vici_LeaseYears2through3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseYearDomain_e49a767b-8a9d-41bb-9056-763e38f0099d" xlink:to="loc_vici_LeaseYears2through3Member_f8d0c4cc-3218-47d0-9a03-bb45a0761f08" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseYears4Through15Member_8987cf71-82ac-4b84-ba15-fca48bd4dda2" xlink:href="vici-20200930.xsd#vici_LeaseYears4Through15Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseYearDomain_e49a767b-8a9d-41bb-9056-763e38f0099d" xlink:to="loc_vici_LeaseYears4Through15Member_8987cf71-82ac-4b84-ba15-fca48bd4dda2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_2a9ed595-a215-4b99-a3cf-9ccf1875fe3f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RealEstateTable_f8d57ade-e70a-4cfc-b9c4-bbddf02f2eda" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_2a9ed595-a215-4b99-a3cf-9ccf1875fe3f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2a9ed595-a215-4b99-a3cf-9ccf1875fe3f_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_2a9ed595-a215-4b99-a3cf-9ccf1875fe3f" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2a9ed595-a215-4b99-a3cf-9ccf1875fe3f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_dc304476-6480-4699-871b-93a4a9d0fbc0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_2a9ed595-a215-4b99-a3cf-9ccf1875fe3f" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_dc304476-6480-4699-871b-93a4a9d0fbc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CenturyPortfolioMember_9f578a30-bc3e-425a-a6f3-a2d93411d9aa" xlink:href="vici-20200930.xsd#vici_CenturyPortfolioMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_dc304476-6480-4699-871b-93a4a9d0fbc0" xlink:to="loc_vici_CenturyPortfolioMember_9f578a30-bc3e-425a-a6f3-a2d93411d9aa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f0fe0d0f-8891-445c-be91-3e9e813e90e3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RealEstateTable_f8d57ade-e70a-4cfc-b9c4-bbddf02f2eda" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f0fe0d0f-8891-445c-be91-3e9e813e90e3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_f0fe0d0f-8891-445c-be91-3e9e813e90e3_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f0fe0d0f-8891-445c-be91-3e9e813e90e3" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_f0fe0d0f-8891-445c-be91-3e9e813e90e3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_046dda6c-59b0-45a1-ac93-730bb1bdcfed" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_f0fe0d0f-8891-445c-be91-3e9e813e90e3" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_046dda6c-59b0-45a1-ac93-730bb1bdcfed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_RegionalMasterLeaseAndJolietLeaseMember_1cf80dd0-c058-448d-951d-309cb874c86e" xlink:href="vici-20200930.xsd#vici_RegionalMasterLeaseAndJolietLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_046dda6c-59b0-45a1-ac93-730bb1bdcfed" xlink:to="loc_vici_RegionalMasterLeaseAndJolietLeaseMember_1cf80dd0-c058-448d-951d-309cb874c86e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LasVegasMasterLeaseMember_8f310d95-c68f-4df1-99e0-12725dee515f" xlink:href="vici-20200930.xsd#vici_LasVegasMasterLeaseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_046dda6c-59b0-45a1-ac93-730bb1bdcfed" xlink:to="loc_vici_LasVegasMasterLeaseMember_8f310d95-c68f-4df1-99e0-12725dee515f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LasVegasMasterMember_daca2ed2-3ddf-4911-bd8e-36cb7f2cfc07" xlink:href="vici-20200930.xsd#vici_LasVegasMasterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_046dda6c-59b0-45a1-ac93-730bb1bdcfed" xlink:to="loc_vici_LasVegasMasterMember_daca2ed2-3ddf-4911-bd8e-36cb7f2cfc07" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_PennNationalAgreementMember_843a8650-526d-4e3d-9d79-f508e01527a5" xlink:href="vici-20200930.xsd#vici_PennNationalAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_046dda6c-59b0-45a1-ac93-730bb1bdcfed" xlink:to="loc_vici_PennNationalAgreementMember_843a8650-526d-4e3d-9d79-f508e01527a5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CPLVJolietAndNonCPLVLeaseAgreementMember_e157406f-79c6-4dda-9f5a-4bb7ed62cd4e" xlink:href="vici-20200930.xsd#vici_CPLVJolietAndNonCPLVLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_046dda6c-59b0-45a1-ac93-730bb1bdcfed" xlink:to="loc_vici_CPLVJolietAndNonCPLVLeaseAgreementMember_e157406f-79c6-4dda-9f5a-4bb7ed62cd4e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NonCPLVLeaseAgreementMember_95efe220-93a5-4dea-b5c9-3515dd3db9db" xlink:href="vici-20200930.xsd#vici_NonCPLVLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_046dda6c-59b0-45a1-ac93-730bb1bdcfed" xlink:to="loc_vici_NonCPLVLeaseAgreementMember_95efe220-93a5-4dea-b5c9-3515dd3db9db" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_JACKCincinnatiLeaseAgreementMember_72a2be84-86bf-4f5c-bf21-cb1fe33b8113" xlink:href="vici-20200930.xsd#vici_JACKCincinnatiLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_046dda6c-59b0-45a1-ac93-730bb1bdcfed" xlink:to="loc_vici_JACKCincinnatiLeaseAgreementMember_72a2be84-86bf-4f5c-bf21-cb1fe33b8113" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_HardRockCincinnatiLeaseAgreementMember_d08adeef-de3d-47ed-be48-6bbde37f0dc5" xlink:href="vici-20200930.xsd#vici_HardRockCincinnatiLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_046dda6c-59b0-45a1-ac93-730bb1bdcfed" xlink:to="loc_vici_HardRockCincinnatiLeaseAgreementMember_d08adeef-de3d-47ed-be48-6bbde37f0dc5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CenturyPortfolioLeaseAgreementMember_e9bab809-79b4-4606-9727-020468113f48" xlink:href="vici-20200930.xsd#vici_CenturyPortfolioLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_046dda6c-59b0-45a1-ac93-730bb1bdcfed" xlink:to="loc_vici_CenturyPortfolioLeaseAgreementMember_e9bab809-79b4-4606-9727-020468113f48" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_JACKClevelandThirstledownLeaseAgreementMember_c6de7b16-e67d-4ce3-8f52-0f5db37d2d27" xlink:href="vici-20200930.xsd#vici_JACKClevelandThirstledownLeaseAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_046dda6c-59b0-45a1-ac93-730bb1bdcfed" xlink:to="loc_vici_JACKClevelandThirstledownLeaseAgreementMember_c6de7b16-e67d-4ce3-8f52-0f5db37d2d27" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/RealEstatePortfolioSummaryofInvestmentinLoansDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#RealEstatePortfolioSummaryofInvestmentinLoansDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/RealEstatePortfolioSummaryofInvestmentinLoansDetails" xlink:type="extended" id="if23aa5d819d349db8fdb4f5ab328537c_RealEstatePortfolioSummaryofInvestmentinLoansDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableDisclosureLineItems_3642504a-88a3-4d57-87c4-e08b141c098d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableBeforeFeesGross_30012273-306b-41d8-abcf-1bc71d6044da" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableBeforeFeesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoansAndLeasesReceivableDisclosureLineItems_3642504a-88a3-4d57-87c4-e08b141c098d" xlink:to="loc_us-gaap_LoansAndLeasesReceivableBeforeFeesGross_30012273-306b-41d8-abcf-1bc71d6044da" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableGrossCarryingAmount_76665043-c31f-4984-a70d-8d69205fc2a0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableGrossCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoansAndLeasesReceivableDisclosureLineItems_3642504a-88a3-4d57-87c4-e08b141c098d" xlink:to="loc_us-gaap_LoansAndLeasesReceivableGrossCarryingAmount_76665043-c31f-4984-a70d-8d69205fc2a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LoanPortfolioFutureFundingCommitments_c21577d2-62ca-4147-a9af-56c93ac1ff22" xlink:href="vici-20200930.xsd#vici_LoanPortfolioFutureFundingCommitments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoansAndLeasesReceivableDisclosureLineItems_3642504a-88a3-4d57-87c4-e08b141c098d" xlink:to="loc_vici_LoanPortfolioFutureFundingCommitments_c21577d2-62ca-4147-a9af-56c93ac1ff22" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_AccountsReceivableStatedInterestRate_5f42d701-a49f-4f89-b363-f0e61084ab26" xlink:href="vici-20200930.xsd#vici_AccountsReceivableStatedInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoansAndLeasesReceivableDisclosureLineItems_3642504a-88a3-4d57-87c4-e08b141c098d" xlink:to="loc_vici_AccountsReceivableStatedInterestRate_5f42d701-a49f-4f89-b363-f0e61084ab26" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_AnnualEscalationRate_096c923a-7b7a-4d1e-934e-410c942e8a7e" xlink:href="vici-20200930.xsd#vici_AnnualEscalationRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoansAndLeasesReceivableDisclosureLineItems_3642504a-88a3-4d57-87c4-e08b141c098d" xlink:to="loc_vici_AnnualEscalationRate_096c923a-7b7a-4d1e-934e-410c942e8a7e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansAndLeasesReceivableDisclosureTable_04caef1d-70e4-4aab-8ced-94d735fa8b33" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansAndLeasesReceivableDisclosureTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LoansAndLeasesReceivableDisclosureLineItems_3642504a-88a3-4d57-87c4-e08b141c098d" xlink:to="loc_us-gaap_LoansAndLeasesReceivableDisclosureTable_04caef1d-70e4-4aab-8ced-94d735fa8b33" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LoanPortfolioAxis_2718ff57-46fd-4464-944e-607bb5d71f78" xlink:href="vici-20200930.xsd#vici_LoanPortfolioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LoansAndLeasesReceivableDisclosureTable_04caef1d-70e4-4aab-8ced-94d735fa8b33" xlink:to="loc_vici_LoanPortfolioAxis_2718ff57-46fd-4464-944e-607bb5d71f78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LoanPortfolioDomain_2718ff57-46fd-4464-944e-607bb5d71f78_default" xlink:href="vici-20200930.xsd#vici_LoanPortfolioDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_vici_LoanPortfolioAxis_2718ff57-46fd-4464-944e-607bb5d71f78" xlink:to="loc_vici_LoanPortfolioDomain_2718ff57-46fd-4464-944e-607bb5d71f78_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LoanPortfolioDomain_ea22fd57-d369-4c4b-b2cd-69e00a5387ee" xlink:href="vici-20200930.xsd#vici_LoanPortfolioDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_vici_LoanPortfolioAxis_2718ff57-46fd-4464-944e-607bb5d71f78" xlink:to="loc_vici_LoanPortfolioDomain_ea22fd57-d369-4c4b-b2cd-69e00a5387ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ForumConventionCenterMortgageLoanMember_4923374f-e97c-4739-a494-2557e47b722f" xlink:href="vici-20200930.xsd#vici_ForumConventionCenterMortgageLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LoanPortfolioDomain_ea22fd57-d369-4c4b-b2cd-69e00a5387ee" xlink:to="loc_vici_ForumConventionCenterMortgageLoanMember_4923374f-e97c-4739-a494-2557e47b722f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ChelseaPiersMortgageLoanMember_fa51c7c6-dc42-4d27-983e-01b64db35130" xlink:href="vici-20200930.xsd#vici_ChelseaPiersMortgageLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LoanPortfolioDomain_ea22fd57-d369-4c4b-b2cd-69e00a5387ee" xlink:to="loc_vici_ChelseaPiersMortgageLoanMember_fa51c7c6-dc42-4d27-983e-01b64db35130" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ROVTermLoanMember_2ed9a39f-71e5-4a1d-80f7-c53a0644cdcf" xlink:href="vici-20200930.xsd#vici_ROVTermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LoanPortfolioDomain_ea22fd57-d369-4c4b-b2cd-69e00a5387ee" xlink:to="loc_vici_ROVTermLoanMember_2ed9a39f-71e5-4a1d-80f7-c53a0644cdcf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ROVCreditFacilityMember_64e91397-1a78-405d-af64-126a17b8e630" xlink:href="vici-20200930.xsd#vici_ROVCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LoanPortfolioDomain_ea22fd57-d369-4c4b-b2cd-69e00a5387ee" xlink:to="loc_vici_ROVCreditFacilityMember_64e91397-1a78-405d-af64-126a17b8e630" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_b944ddd6-b00b-4fc8-be24-e27708eb8871" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LoansAndLeasesReceivableDisclosureTable_04caef1d-70e4-4aab-8ced-94d735fa8b33" xlink:to="loc_us-gaap_DebtInstrumentAxis_b944ddd6-b00b-4fc8-be24-e27708eb8871" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_b944ddd6-b00b-4fc8-be24-e27708eb8871_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_b944ddd6-b00b-4fc8-be24-e27708eb8871" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_b944ddd6-b00b-4fc8-be24-e27708eb8871_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_2dda7022-f12f-4bc6-96c6-b314868cb0b9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_b944ddd6-b00b-4fc8-be24-e27708eb8871" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_2dda7022-f12f-4bc6-96c6-b314868cb0b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ROVCreditFacilityMember_2fae520b-1411-49c4-b4b8-cfe36ae81903" xlink:href="vici-20200930.xsd#vici_ROVCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2dda7022-f12f-4bc6-96c6-b314868cb0b9" xlink:to="loc_vici_ROVCreditFacilityMember_2fae520b-1411-49c4-b4b8-cfe36ae81903" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeAxis_696ab63a-f6b8-4a56-8148-592212511473" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LoansAndLeasesReceivableDisclosureTable_04caef1d-70e4-4aab-8ced-94d735fa8b33" xlink:to="loc_us-gaap_InvestmentTypeAxis_696ab63a-f6b8-4a56-8148-592212511473" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_696ab63a-f6b8-4a56-8148-592212511473_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_InvestmentTypeAxis_696ab63a-f6b8-4a56-8148-592212511473" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_696ab63a-f6b8-4a56-8148-592212511473_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentTypeCategorizationMember_728fc104-c382-4238-81d8-4c8b3460bae3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_InvestmentTypeAxis_696ab63a-f6b8-4a56-8148-592212511473" xlink:to="loc_us-gaap_InvestmentTypeCategorizationMember_728fc104-c382-4238-81d8-4c8b3460bae3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorLoansMember_582715ad-fb51-4bf1-b73a-b96c1aa9f43d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SeniorLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InvestmentTypeCategorizationMember_728fc104-c382-4238-81d8-4c8b3460bae3" xlink:to="loc_us-gaap_SeniorLoansMember_582715ad-fb51-4bf1-b73a-b96c1aa9f43d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_9d9fe295-c4e1-4a5f-a9e2-3e0f94d0b107" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LoansAndLeasesReceivableDisclosureTable_04caef1d-70e4-4aab-8ced-94d735fa8b33" xlink:to="loc_us-gaap_VariableRateAxis_9d9fe295-c4e1-4a5f-a9e2-3e0f94d0b107" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_9d9fe295-c4e1-4a5f-a9e2-3e0f94d0b107_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_9d9fe295-c4e1-4a5f-a9e2-3e0f94d0b107" xlink:to="loc_us-gaap_VariableRateDomain_9d9fe295-c4e1-4a5f-a9e2-3e0f94d0b107_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_d7f1b0be-e84b-4af0-b342-5530ca78f5c2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_9d9fe295-c4e1-4a5f-a9e2-3e0f94d0b107" xlink:to="loc_us-gaap_VariableRateDomain_d7f1b0be-e84b-4af0-b342-5530ca78f5c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_a8659662-cf8e-4f96-9bd8-44e0e3a57397" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_d7f1b0be-e84b-4af0-b342-5530ca78f5c2" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_a8659662-cf8e-4f96-9bd8-44e0e3a57397" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_adf12b73-5602-4fd3-a772-1166dc9ea0ba" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LoansAndLeasesReceivableDisclosureTable_04caef1d-70e4-4aab-8ced-94d735fa8b33" xlink:to="loc_srt_StatementScenarioAxis_adf12b73-5602-4fd3-a772-1166dc9ea0ba" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_adf12b73-5602-4fd3-a772-1166dc9ea0ba_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_adf12b73-5602-4fd3-a772-1166dc9ea0ba" xlink:to="loc_srt_ScenarioUnspecifiedDomain_adf12b73-5602-4fd3-a772-1166dc9ea0ba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_06005bea-125b-4646-b7e3-a21ce0931089" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_adf12b73-5602-4fd3-a772-1166dc9ea0ba" xlink:to="loc_srt_ScenarioUnspecifiedDomain_06005bea-125b-4646-b7e3-a21ce0931089" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScenarioPlanMember_4e56d05b-a17f-4af7-9d93-301213201e17" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScenarioPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_06005bea-125b-4646-b7e3-a21ce0931089" xlink:to="loc_us-gaap_ScenarioPlanMember_4e56d05b-a17f-4af7-9d93-301213201e17" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/AllowanceforCreditLosses" xlink:type="simple" xlink:href="vici-20200930.xsd#AllowanceforCreditLosses"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/AllowanceforCreditLosses" xlink:type="extended" id="i64a4cf26046c4b9eb2d5f4e8721159f2_AllowanceforCreditLosses"/>
  <link:roleRef roleURI="http://viciproperties.com/role/AllowanceforCreditLossesTables" xlink:type="simple" xlink:href="vici-20200930.xsd#AllowanceforCreditLossesTables"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/AllowanceforCreditLossesTables" xlink:type="extended" id="ie8cc1745a48941ad9307968b247df83c_AllowanceforCreditLossesTables"/>
  <link:roleRef roleURI="http://viciproperties.com/role/AllowanceforCreditLossesNarrativeDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#AllowanceforCreditLossesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/AllowanceforCreditLossesNarrativeDetails" xlink:type="extended" id="i19ded98a4bc5423697ab7b6d8bd9d2d4_AllowanceforCreditLossesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7683c1b5-8a0a-41d0-9f64-9f1150958a13" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivableInvestmentInLeaseAndLoansAllowanceForCreditLoss_84d9dbc7-1463-4e59-850e-1ed78ddab532" xlink:href="vici-20200930.xsd#vici_FinancingReceivableInvestmentInLeaseAndLoansAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7683c1b5-8a0a-41d0-9f64-9f1150958a13" xlink:to="loc_vici_FinancingReceivableInvestmentInLeaseAndLoansAllowanceForCreditLoss_84d9dbc7-1463-4e59-850e-1ed78ddab532" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CreditAllowancePercentage_28d0fc0a-6536-4359-8874-cf8530e4bef8" xlink:href="vici-20200930.xsd#vici_CreditAllowancePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7683c1b5-8a0a-41d0-9f64-9f1150958a13" xlink:to="loc_vici_CreditAllowancePercentage_28d0fc0a-6536-4359-8874-cf8530e4bef8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentInLease_bd8e3d91-e44b-403d-8d15-7d48f7b09344" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetInvestmentInLease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7683c1b5-8a0a-41d0-9f64-9f1150958a13" xlink:to="loc_us-gaap_NetInvestmentInLease_bd8e3d91-e44b-403d-8d15-7d48f7b09344" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivableNetInvestmentInLeaseAndLoansCreditLossExpenseReversal_ac57e1a1-b7ba-4797-9d10-9bbb2bbcb248" xlink:href="vici-20200930.xsd#vici_FinancingReceivableNetInvestmentInLeaseAndLoansCreditLossExpenseReversal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7683c1b5-8a0a-41d0-9f64-9f1150958a13" xlink:to="loc_vici_FinancingReceivableNetInvestmentInLeaseAndLoansCreditLossExpenseReversal_ac57e1a1-b7ba-4797-9d10-9bbb2bbcb248" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_9d1bc97b-25c8-4256-9f75-2263ff5ccf0b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7683c1b5-8a0a-41d0-9f64-9f1150958a13" xlink:to="loc_us-gaap_NotesReceivableGross_9d1bc97b-25c8-4256-9f75-2263ff5ccf0b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyAtCost_ed577e1a-2dd9-4107-a127-54804707a2a2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RealEstateInvestmentPropertyAtCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7683c1b5-8a0a-41d0-9f64-9f1150958a13" xlink:to="loc_us-gaap_RealEstateInvestmentPropertyAtCost_ed577e1a-2dd9-4107-a127-54804707a2a2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NonCashIncreaseFromLeaseModification_1673361e-199d-4413-b92b-cb45a4462df7" xlink:href="vici-20200930.xsd#vici_NonCashIncreaseFromLeaseModification"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7683c1b5-8a0a-41d0-9f64-9f1150958a13" xlink:to="loc_vici_NonCashIncreaseFromLeaseModification_1673361e-199d-4413-b92b-cb45a4462df7" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_596c33dd-de09-4758-8eba-5f11f5a44faf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7683c1b5-8a0a-41d0-9f64-9f1150958a13" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_596c33dd-de09-4758-8eba-5f11f5a44faf" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivableAllowanceForCreditLossIncreaseInCurrentAcquistion_c271edcd-4ef7-45e1-8a0c-a8ea0aad30c2" xlink:href="vici-20200930.xsd#vici_FinancingReceivableAllowanceForCreditLossIncreaseInCurrentAcquistion"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7683c1b5-8a0a-41d0-9f64-9f1150958a13" xlink:to="loc_vici_FinancingReceivableAllowanceForCreditLossIncreaseInCurrentAcquistion_c271edcd-4ef7-45e1-8a0c-a8ea0aad30c2" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3c0230ce-8f27-4647-bad5-14e9fd9d5bdd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_7683c1b5-8a0a-41d0-9f64-9f1150958a13" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3c0230ce-8f27-4647-bad5-14e9fd9d5bdd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_2034f974-3eb2-4b5a-94f6-b9de6977cfdb" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3c0230ce-8f27-4647-bad5-14e9fd9d5bdd" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_2034f974-3eb2-4b5a-94f6-b9de6977cfdb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_2034f974-3eb2-4b5a-94f6-b9de6977cfdb_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_2034f974-3eb2-4b5a-94f6-b9de6977cfdb" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_2034f974-3eb2-4b5a-94f6-b9de6977cfdb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_ecb45fdd-451b-4900-bd6a-72658d4cd463" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_2034f974-3eb2-4b5a-94f6-b9de6977cfdb" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_ecb45fdd-451b-4900-bd6a-72658d4cd463" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_5a8147f8-338e-4e16-bd6c-99a5c25df5ff" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_ecb45fdd-451b-4900-bd6a-72658d4cd463" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_5a8147f8-338e-4e16-bd6c-99a5c25df5ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_4980330a-dbf0-4b46-b605-7ff7cd10ef6b" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3c0230ce-8f27-4647-bad5-14e9fd9d5bdd" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_4980330a-dbf0-4b46-b605-7ff7cd10ef6b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_4980330a-dbf0-4b46-b605-7ff7cd10ef6b_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_4980330a-dbf0-4b46-b605-7ff7cd10ef6b" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_4980330a-dbf0-4b46-b605-7ff7cd10ef6b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_6e573998-7b40-4bbd-a8dc-5ddb22145301" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_4980330a-dbf0-4b46-b605-7ff7cd10ef6b" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_6e573998-7b40-4bbd-a8dc-5ddb22145301" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_MTAPropertyAcquisitionsMember_91451752-15d6-4d4d-b95c-b7a0590332ad" xlink:href="vici-20200930.xsd#vici_MTAPropertyAcquisitionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_6e573998-7b40-4bbd-a8dc-5ddb22145301" xlink:to="loc_vici_MTAPropertyAcquisitionsMember_91451752-15d6-4d4d-b95c-b7a0590332ad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CaesarsPropertiesMember_ba2093d7-802b-4e9a-ab4d-7a15cbef906a" xlink:href="vici-20200930.xsd#vici_CaesarsPropertiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_6e573998-7b40-4bbd-a8dc-5ddb22145301" xlink:to="loc_vici_CaesarsPropertiesMember_ba2093d7-802b-4e9a-ab4d-7a15cbef906a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CPLVAndHLVAdditionalRentAcquisitionMember_a5ddff45-24c0-4269-81e0-5292b56a3422" xlink:href="vici-20200930.xsd#vici_CPLVAndHLVAdditionalRentAcquisitionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_6e573998-7b40-4bbd-a8dc-5ddb22145301" xlink:to="loc_vici_CPLVAndHLVAdditionalRentAcquisitionMember_a5ddff45-24c0-4269-81e0-5292b56a3422" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_bd4cef7a-26fc-43c0-a6c5-0eff1fe2e461" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3c0230ce-8f27-4647-bad5-14e9fd9d5bdd" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_bd4cef7a-26fc-43c0-a6c5-0eff1fe2e461" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_bd4cef7a-26fc-43c0-a6c5-0eff1fe2e461_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_bd4cef7a-26fc-43c0-a6c5-0eff1fe2e461" xlink:to="loc_us-gaap_ReceivableTypeDomain_bd4cef7a-26fc-43c0-a6c5-0eff1fe2e461_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_6f75a2db-0bf6-44d6-80f0-fdaec8f653db" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_bd4cef7a-26fc-43c0-a6c5-0eff1fe2e461" xlink:to="loc_us-gaap_ReceivableTypeDomain_6f75a2db-0bf6-44d6-80f0-fdaec8f653db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceReceivablesMember_4892f678-3372-4916-9811-ab4f90ec37d2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_6f75a2db-0bf6-44d6-80f0-fdaec8f653db" xlink:to="loc_us-gaap_FinanceReceivablesMember_4892f678-3372-4916-9811-ab4f90ec37d2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableMember_b56ba78a-92b1-4fab-9a34-91f1b33e7ff1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_6f75a2db-0bf6-44d6-80f0-fdaec8f653db" xlink:to="loc_us-gaap_LoansReceivableMember_b56ba78a-92b1-4fab-9a34-91f1b33e7ff1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseTypeAxis_dccac8f3-b78d-42b4-9e64-9d19df1d450a" xlink:href="vici-20200930.xsd#vici_LeaseTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3c0230ce-8f27-4647-bad5-14e9fd9d5bdd" xlink:to="loc_vici_LeaseTypeAxis_dccac8f3-b78d-42b4-9e64-9d19df1d450a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseTypeDomain_dccac8f3-b78d-42b4-9e64-9d19df1d450a_default" xlink:href="vici-20200930.xsd#vici_LeaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_vici_LeaseTypeAxis_dccac8f3-b78d-42b4-9e64-9d19df1d450a" xlink:to="loc_vici_LeaseTypeDomain_dccac8f3-b78d-42b4-9e64-9d19df1d450a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseTypeDomain_e92d1cf9-78a8-4fa0-a811-434c5e485759" xlink:href="vici-20200930.xsd#vici_LeaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_vici_LeaseTypeAxis_dccac8f3-b78d-42b4-9e64-9d19df1d450a" xlink:to="loc_vici_LeaseTypeDomain_e92d1cf9-78a8-4fa0-a811-434c5e485759" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DirectFinancingAndSalesTypeMember_e70026c8-c2c8-48cc-bdf1-bfd4f4cf15d3" xlink:href="vici-20200930.xsd#vici_DirectFinancingAndSalesTypeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeaseTypeDomain_e92d1cf9-78a8-4fa0-a811-434c5e485759" xlink:to="loc_vici_DirectFinancingAndSalesTypeMember_e70026c8-c2c8-48cc-bdf1-bfd4f4cf15d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_8d477f00-84aa-4019-a845-3f537c3996f2" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_3c0230ce-8f27-4647-bad5-14e9fd9d5bdd" xlink:to="loc_srt_CounterpartyNameAxis_8d477f00-84aa-4019-a845-3f537c3996f2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_8d477f00-84aa-4019-a845-3f537c3996f2_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_8d477f00-84aa-4019-a845-3f537c3996f2" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_8d477f00-84aa-4019-a845-3f537c3996f2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_a7d1280b-a836-4681-92cf-1b1ec77edd3b" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_8d477f00-84aa-4019-a845-3f537c3996f2" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_a7d1280b-a836-4681-92cf-1b1ec77edd3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ForumConventionCenterBorrowerMember_a02a43cb-f287-428a-8557-e4990e21f465" xlink:href="vici-20200930.xsd#vici_ForumConventionCenterBorrowerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_a7d1280b-a836-4681-92cf-1b1ec77edd3b" xlink:to="loc_vici_ForumConventionCenterBorrowerMember_a02a43cb-f287-428a-8557-e4990e21f465" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/AllowanceforCreditLossesNetInvestmentinLeaseAllowanceforCreditLossDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#AllowanceforCreditLossesNetInvestmentinLeaseAllowanceforCreditLossDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/AllowanceforCreditLossesNetInvestmentinLeaseAllowanceforCreditLossDetails" xlink:type="extended" id="i57df219ddebb40eeb4e499ad32023e81_AllowanceforCreditLossesNetInvestmentinLeaseAllowanceforCreditLossDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_4fb069c6-5bd4-4c51-ba97-175e4fe0e5ea" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossAmortizationCostAbstract_998c63d9-39d7-4b65-936e-62dbf4db3f13" xlink:href="vici-20200930.xsd#vici_NetInvestmentInLeaseAllowanceForCreditLossAmortizationCostAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_4fb069c6-5bd4-4c51-ba97-175e4fe0e5ea" xlink:to="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossAmortizationCostAbstract_998c63d9-39d7-4b65-936e-62dbf4db3f13" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NetInvestmentInLeaseBeforeAllowanceForCreditLoss_084cd971-4e8e-4105-84cd-b2f0f5383741" xlink:href="vici-20200930.xsd#vici_NetInvestmentInLeaseBeforeAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossAmortizationCostAbstract_998c63d9-39d7-4b65-936e-62dbf4db3f13" xlink:to="loc_vici_NetInvestmentInLeaseBeforeAllowanceForCreditLoss_084cd971-4e8e-4105-84cd-b2f0f5383741" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableGross_cc87a673-9ebf-4d5b-b84b-1907b4c24728" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesReceivableGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossAmortizationCostAbstract_998c63d9-39d7-4b65-936e-62dbf4db3f13" xlink:to="loc_us-gaap_NotesReceivableGross_cc87a673-9ebf-4d5b-b84b-1907b4c24728" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_OtherAssetsSalesTypeSubLeasesBeforeAllowanceForCreditLosses_022efc34-08ec-4c66-a5be-55d58c303ba5" xlink:href="vici-20200930.xsd#vici_OtherAssetsSalesTypeSubLeasesBeforeAllowanceForCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossAmortizationCostAbstract_998c63d9-39d7-4b65-936e-62dbf4db3f13" xlink:to="loc_vici_OtherAssetsSalesTypeSubLeasesBeforeAllowanceForCreditLosses_022efc34-08ec-4c66-a5be-55d58c303ba5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAmortizedCost_8745f6e0-3877-45c5-8efd-3787b37d0b18" xlink:href="vici-20200930.xsd#vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossAmortizationCostAbstract_998c63d9-39d7-4b65-936e-62dbf4db3f13" xlink:to="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAmortizedCost_8745f6e0-3877-45c5-8efd-3787b37d0b18" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossRecoveryAbstract_9002f94c-2522-482a-b87c-06570dbab6fd" xlink:href="vici-20200930.xsd#vici_NetInvestmentInLeaseAllowanceForCreditLossRecoveryAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_4fb069c6-5bd4-4c51-ba97-175e4fe0e5ea" xlink:to="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossRecoveryAbstract_9002f94c-2522-482a-b87c-06570dbab6fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLoss_8a30a06e-1060-4832-a823-fe82f1f2a549" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetInvestmentInLeaseAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossRecoveryAbstract_9002f94c-2522-482a-b87c-06570dbab6fd" xlink:to="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLoss_8a30a06e-1060-4832-a823-fe82f1f2a549" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_ff0e8c39-8325-45eb-b451-cf20161e4778" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossRecoveryAbstract_9002f94c-2522-482a-b87c-06570dbab6fd" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses_ff0e8c39-8325-45eb-b451-cf20161e4778" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLoss_57e1cc2b-977a-49dc-975d-95f744ec9690" xlink:href="vici-20200930.xsd#vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossRecoveryAbstract_9002f94c-2522-482a-b87c-06570dbab6fd" xlink:to="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLoss_57e1cc2b-977a-49dc-975d-95f744ec9690" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossAbstract_a57d64fa-8c1b-4938-82f4-0548c59fd57f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetInvestmentInLeaseAllowanceForCreditLossAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_4fb069c6-5bd4-4c51-ba97-175e4fe0e5ea" xlink:to="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossAbstract_a57d64fa-8c1b-4938-82f4-0548c59fd57f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentInLease_b08e357a-1d92-4897-b45f-c06ab5bdf15e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetInvestmentInLease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossAbstract_a57d64fa-8c1b-4938-82f4-0548c59fd57f" xlink:to="loc_us-gaap_NetInvestmentInLease_b08e357a-1d92-4897-b45f-c06ab5bdf15e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_762dbaae-bcfe-456f-a3bd-699011c17d1d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NotesReceivableNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossAbstract_a57d64fa-8c1b-4938-82f4-0548c59fd57f" xlink:to="loc_us-gaap_NotesReceivableNet_762dbaae-bcfe-456f-a3bd-699011c17d1d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_OtherAssetsSalesTypeSubLeases_a9614e77-7eb1-4945-840a-5135667d5c47" xlink:href="vici-20200930.xsd#vici_OtherAssetsSalesTypeSubLeases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossAbstract_a57d64fa-8c1b-4938-82f4-0548c59fd57f" xlink:to="loc_vici_OtherAssetsSalesTypeSubLeases_a9614e77-7eb1-4945-840a-5135667d5c47" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAfterAllowanceForCreditLoss_99f0f6ae-156a-403b-82d9-492e16cd2bc1" xlink:href="vici-20200930.xsd#vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAfterAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossAbstract_a57d64fa-8c1b-4938-82f4-0548c59fd57f" xlink:to="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAfterAllowanceForCreditLoss_99f0f6ae-156a-403b-82d9-492e16cd2bc1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossPercentageAbstract_9c30cf32-b5ef-412d-b2b8-b25c8177fbf2" xlink:href="vici-20200930.xsd#vici_NetInvestmentInLeaseAllowanceForCreditLossPercentageAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_4fb069c6-5bd4-4c51-ba97-175e4fe0e5ea" xlink:to="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossPercentageAbstract_9c30cf32-b5ef-412d-b2b8-b25c8177fbf2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossPercentage_ca0fc018-2dc5-4ba8-9ca2-338277373982" xlink:href="vici-20200930.xsd#vici_NetInvestmentInLeaseAllowanceForCreditLossPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossPercentageAbstract_9c30cf32-b5ef-412d-b2b8-b25c8177fbf2" xlink:to="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossPercentage_ca0fc018-2dc5-4ba8-9ca2-338277373982" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivableAllowanceForCreditLossPercentage_12526783-409c-4d7b-aba7-c79bf4aae72f" xlink:href="vici-20200930.xsd#vici_FinancingReceivableAllowanceForCreditLossPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossPercentageAbstract_9c30cf32-b5ef-412d-b2b8-b25c8177fbf2" xlink:to="loc_vici_FinancingReceivableAllowanceForCreditLossPercentage_12526783-409c-4d7b-aba7-c79bf4aae72f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_OtherAssetsSalesTypeSubLeasesAllowanceForCreditLossesPercentage_9535cca1-7e60-4620-81e9-00d5c0f55d3d" xlink:href="vici-20200930.xsd#vici_OtherAssetsSalesTypeSubLeasesAllowanceForCreditLossesPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossPercentageAbstract_9c30cf32-b5ef-412d-b2b8-b25c8177fbf2" xlink:to="loc_vici_OtherAssetsSalesTypeSubLeasesAllowanceForCreditLossesPercentage_9535cca1-7e60-4620-81e9-00d5c0f55d3d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossPercentage_2f5b8658-2764-410b-916b-76d9229f99e0" xlink:href="vici-20200930.xsd#vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_NetInvestmentInLeaseAllowanceForCreditLossPercentageAbstract_9c30cf32-b5ef-412d-b2b8-b25c8177fbf2" xlink:to="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossPercentage_2f5b8658-2764-410b-916b-76d9229f99e0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_e98eae97-9a5a-4011-aad1-976d1522bfe1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_4fb069c6-5bd4-4c51-ba97-175e4fe0e5ea" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_e98eae97-9a5a-4011-aad1-976d1522bfe1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_e6a8c65b-4499-4d87-b559-39ff38a7acc6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_e98eae97-9a5a-4011-aad1-976d1522bfe1" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_e6a8c65b-4499-4d87-b559-39ff38a7acc6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_e6a8c65b-4499-4d87-b559-39ff38a7acc6_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_e6a8c65b-4499-4d87-b559-39ff38a7acc6" xlink:to="loc_us-gaap_ReceivableTypeDomain_e6a8c65b-4499-4d87-b559-39ff38a7acc6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_d5e5e49c-e816-440c-a983-921d04cb262a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_e6a8c65b-4499-4d87-b559-39ff38a7acc6" xlink:to="loc_us-gaap_ReceivableTypeDomain_d5e5e49c-e816-440c-a983-921d04cb262a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceReceivablesMember_d34a32d4-6e9a-437e-8fb7-6489ae680702" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceReceivablesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_d5e5e49c-e816-440c-a983-921d04cb262a" xlink:to="loc_us-gaap_FinanceReceivablesMember_d34a32d4-6e9a-437e-8fb7-6489ae680702" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansReceivableMember_3eeabe91-d9ca-4b60-b635-2c7f0754ef5b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LoansReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_d5e5e49c-e816-440c-a983-921d04cb262a" xlink:to="loc_us-gaap_LoansReceivableMember_3eeabe91-d9ca-4b60-b635-2c7f0754ef5b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/AllowanceforCreditLossesAllowanceforCreditLossesRollforwardDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#AllowanceforCreditLossesAllowanceforCreditLossesRollforwardDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/AllowanceforCreditLossesAllowanceforCreditLossesRollforwardDetails" xlink:type="extended" id="ic143caeba2f8474cbb80e1f1e368343d_AllowanceforCreditLossesAllowanceforCreditLossesRollforwardDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_163cff0b-604d-4af7-af7d-e510e030f4b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossRollForward_37e22537-cec2-40b9-bb04-df01b7322af2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NetInvestmentInLeaseAllowanceForCreditLossRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_163cff0b-604d-4af7-af7d-e510e030f4b4" xlink:to="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossRollForward_37e22537-cec2-40b9-bb04-df01b7322af2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLoss_11e0e4b7-19f9-44aa-9f5d-e57eac971833" xlink:href="vici-20200930.xsd#vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossRollForward_37e22537-cec2-40b9-bb04-df01b7322af2" xlink:to="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLoss_11e0e4b7-19f9-44aa-9f5d-e57eac971833" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossIncreaseInCurrentPeriodInvestments_ee67a326-b952-462e-95f8-a783662b5468" xlink:href="vici-20200930.xsd#vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossIncreaseInCurrentPeriodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossRollForward_37e22537-cec2-40b9-bb04-df01b7322af2" xlink:to="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossIncreaseInCurrentPeriodInvestments_ee67a326-b952-462e-95f8-a783662b5468" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossExpenseReversal_e2c4b782-44c9-4fd3-9c30-23fb1e5d60b4" xlink:href="vici-20200930.xsd#vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossExpenseReversal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossRollForward_37e22537-cec2-40b9-bb04-df01b7322af2" xlink:to="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossExpenseReversal_e2c4b782-44c9-4fd3-9c30-23fb1e5d60b4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossChargeoffs_c3605fbb-4e10-41e0-9e8b-2dbc364942b5" xlink:href="vici-20200930.xsd#vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossChargeoffs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossRollForward_37e22537-cec2-40b9-bb04-df01b7322af2" xlink:to="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossChargeoffs_c3605fbb-4e10-41e0-9e8b-2dbc364942b5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossRecovery_74672681-76a5-485f-8b10-c893f7fcf589" xlink:href="vici-20200930.xsd#vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossRecovery"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetInvestmentInLeaseAllowanceForCreditLossRollForward_37e22537-cec2-40b9-bb04-df01b7322af2" xlink:to="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLossRecovery_74672681-76a5-485f-8b10-c893f7fcf589" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLoss_686e1dff-dc08-4e20-b3aa-b9b7427fccc0" xlink:href="vici-20200930.xsd#vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAllowanceForCreditLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_a4a51a1e-c333-4962-82ea-bb5d8c35dc73" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_163cff0b-604d-4af7-af7d-e510e030f4b4" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_a4a51a1e-c333-4962-82ea-bb5d8c35dc73" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_d67fbfdd-0d2d-46ac-b423-bbcf3bcefaad" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_a4a51a1e-c333-4962-82ea-bb5d8c35dc73" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_d67fbfdd-0d2d-46ac-b423-bbcf3bcefaad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_d67fbfdd-0d2d-46ac-b423-bbcf3bcefaad_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_d67fbfdd-0d2d-46ac-b423-bbcf3bcefaad" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_d67fbfdd-0d2d-46ac-b423-bbcf3bcefaad_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_89ba7486-0d30-4631-a549-e09547d109b8" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_d67fbfdd-0d2d-46ac-b423-bbcf3bcefaad" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_89ba7486-0d30-4631-a549-e09547d109b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_ad616515-4e84-4979-ad33-a834e87cdeff" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_89ba7486-0d30-4631-a549-e09547d109b8" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_ad616515-4e84-4979-ad33-a834e87cdeff" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/AllowanceforCreditLossesFinancingReceivableCreditQualityDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#AllowanceforCreditLossesFinancingReceivableCreditQualityDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/AllowanceforCreditLossesFinancingReceivableCreditQualityDetails" xlink:type="extended" id="id07de3534e1e4b94bb73e43e628d7ec3_AllowanceforCreditLossesFinancingReceivableCreditQualityDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_4900d02a-44b5-40c3-8815-93d44f87bf43" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAmortizedCost_0fef5f65-2374-486f-89e9-bcd8ecac9a3b" xlink:href="vici-20200930.xsd#vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_4900d02a-44b5-40c3-8815-93d44f87bf43" xlink:to="loc_vici_FinancingReceivablesNetInvestmentInLeaseAndLoansAmortizedCost_0fef5f65-2374-486f-89e9-bcd8ecac9a3b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_b906a352-2bf9-4833-9277-05733b55395c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentLineItems_4900d02a-44b5-40c3-8815-93d44f87bf43" xlink:to="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_b906a352-2bf9-4833-9277-05733b55395c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CreditRatingMoodysAxis_32279b6b-61b6-41bd-87bd-1224e97586b9" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_CreditRatingMoodysAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_b906a352-2bf9-4833-9277-05733b55395c" xlink:to="loc_srt_CreditRatingMoodysAxis_32279b6b-61b6-41bd-87bd-1224e97586b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ExternalCreditRatingMoodysMember_32279b6b-61b6-41bd-87bd-1224e97586b9_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ExternalCreditRatingMoodysMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CreditRatingMoodysAxis_32279b6b-61b6-41bd-87bd-1224e97586b9" xlink:to="loc_srt_ExternalCreditRatingMoodysMember_32279b6b-61b6-41bd-87bd-1224e97586b9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ExternalCreditRatingMoodysMember_c61a730b-b799-4954-8852-2696303a089a" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ExternalCreditRatingMoodysMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CreditRatingMoodysAxis_32279b6b-61b6-41bd-87bd-1224e97586b9" xlink:to="loc_srt_ExternalCreditRatingMoodysMember_c61a730b-b799-4954-8852-2696303a089a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MoodysBa2RatingMember_cc0206f7-516e-4531-b23c-83fb19f229f2" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MoodysBa2RatingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ExternalCreditRatingMoodysMember_c61a730b-b799-4954-8852-2696303a089a" xlink:to="loc_srt_MoodysBa2RatingMember_cc0206f7-516e-4531-b23c-83fb19f229f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MoodysBa3RatingMember_2fd2a17d-1304-4998-8964-18b772218b83" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MoodysBa3RatingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ExternalCreditRatingMoodysMember_c61a730b-b799-4954-8852-2696303a089a" xlink:to="loc_srt_MoodysBa3RatingMember_2fd2a17d-1304-4998-8964-18b772218b83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MoodysB1RatingMember_a75123f3-ff2c-4397-95b6-d5cbc61a0275" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MoodysB1RatingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ExternalCreditRatingMoodysMember_c61a730b-b799-4954-8852-2696303a089a" xlink:to="loc_srt_MoodysB1RatingMember_a75123f3-ff2c-4397-95b6-d5cbc61a0275" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MoodysB2RatingMember_b27e89f8-a438-49a5-92cb-38ab79f9683b" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MoodysB2RatingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ExternalCreditRatingMoodysMember_c61a730b-b799-4954-8852-2696303a089a" xlink:to="loc_srt_MoodysB2RatingMember_b27e89f8-a438-49a5-92cb-38ab79f9683b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MoodysB3RatingMember_47789a3f-26b6-4dcb-b77e-a72a25991b26" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MoodysB3RatingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ExternalCreditRatingMoodysMember_c61a730b-b799-4954-8852-2696303a089a" xlink:to="loc_srt_MoodysB3RatingMember_47789a3f-26b6-4dcb-b77e-a72a25991b26" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_MoodysOtherRatingMember_bd01e795-56a9-453f-94ab-be373574ffd7" xlink:href="vici-20200930.xsd#vici_MoodysOtherRatingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ExternalCreditRatingMoodysMember_c61a730b-b799-4954-8852-2696303a089a" xlink:to="loc_vici_MoodysOtherRatingMember_bd01e795-56a9-453f-94ab-be373574ffd7" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/OtherAssetsandOtherLiabilities" xlink:type="simple" xlink:href="vici-20200930.xsd#OtherAssetsandOtherLiabilities"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/OtherAssetsandOtherLiabilities" xlink:type="extended" id="i80ca953308d54e3ab7bb861b74247e88_OtherAssetsandOtherLiabilities"/>
  <link:roleRef roleURI="http://viciproperties.com/role/OtherAssetsandOtherLiabilitiesTables" xlink:type="simple" xlink:href="vici-20200930.xsd#OtherAssetsandOtherLiabilitiesTables"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/OtherAssetsandOtherLiabilitiesTables" xlink:type="extended" id="i2047f3dac13747128bf03d542503e004_OtherAssetsandOtherLiabilitiesTables"/>
  <link:roleRef roleURI="http://viciproperties.com/role/OtherAssetsandOtherLiabilitiesScheduleofOtherAssetsDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#OtherAssetsandOtherLiabilitiesScheduleofOtherAssetsDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/OtherAssetsandOtherLiabilitiesScheduleofOtherAssetsDetails" xlink:type="extended" id="i678c054026d64d51b52f805bdf06501f_OtherAssetsandOtherLiabilitiesScheduleofOtherAssetsDetails"/>
  <link:roleRef roleURI="http://viciproperties.com/role/OtherAssetsandOtherLiabilitiesScheduleofPropertyandEquipmentUsedinOperationsDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#OtherAssetsandOtherLiabilitiesScheduleofPropertyandEquipmentUsedinOperationsDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/OtherAssetsandOtherLiabilitiesScheduleofPropertyandEquipmentUsedinOperationsDetails" xlink:type="extended" id="ib6b8f12985034c698acf8be8934ea540_OtherAssetsandOtherLiabilitiesScheduleofPropertyandEquipmentUsedinOperationsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4cf366ea-e1ad-43df-b818-0336f273c49c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_32479711-81de-4b5f-8059-49ca639e1a7b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4cf366ea-e1ad-43df-b818-0336f273c49c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_32479711-81de-4b5f-8059-49ca639e1a7b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_dcbf8300-9415-4369-b2c9-3e42b7f029a2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4cf366ea-e1ad-43df-b818-0336f273c49c" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_dcbf8300-9415-4369-b2c9-3e42b7f029a2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_a829ccf2-9db5-4d2b-9c57-9ed12f60004f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4cf366ea-e1ad-43df-b818-0336f273c49c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_a829ccf2-9db5-4d2b-9c57-9ed12f60004f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_85c842b1-357c-41d3-a1d7-592e2a2bbf63" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4cf366ea-e1ad-43df-b818-0336f273c49c" xlink:to="loc_us-gaap_Depreciation_85c842b1-357c-41d3-a1d7-592e2a2bbf63" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_ee3906a1-7809-4008-8841-9f3ac86598f6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_4cf366ea-e1ad-43df-b818-0336f273c49c" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_ee3906a1-7809-4008-8841-9f3ac86598f6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_9bb17e77-a1c7-4145-ba6b-086470e51b94" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_ee3906a1-7809-4008-8841-9f3ac86598f6" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_9bb17e77-a1c7-4145-ba6b-086470e51b94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_9bb17e77-a1c7-4145-ba6b-086470e51b94_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_9bb17e77-a1c7-4145-ba6b-086470e51b94" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_9bb17e77-a1c7-4145-ba6b-086470e51b94_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8a73d3bc-8cd9-448e-ad9c-e0022713c3ff" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_9bb17e77-a1c7-4145-ba6b-086470e51b94" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8a73d3bc-8cd9-448e-ad9c-e0022713c3ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandAndLandImprovementsMember_aaee2ff1-0307-43d6-9e0a-c3f0c5b8ebc6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LandAndLandImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8a73d3bc-8cd9-448e-ad9c-e0022713c3ff" xlink:to="loc_us-gaap_LandAndLandImprovementsMember_aaee2ff1-0307-43d6-9e0a-c3f0c5b8ebc6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_3aa52c13-9b79-4aaf-81c7-68e54f46d534" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8a73d3bc-8cd9-448e-ad9c-e0022713c3ff" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_3aa52c13-9b79-4aaf-81c7-68e54f46d534" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FurnitureAndEquipmentIncludingCapitalLeasesMember_465b2307-d1ca-4647-ac6a-2e9db18a4db2" xlink:href="vici-20200930.xsd#vici_FurnitureAndEquipmentIncludingCapitalLeasesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8a73d3bc-8cd9-448e-ad9c-e0022713c3ff" xlink:to="loc_vici_FurnitureAndEquipmentIncludingCapitalLeasesMember_465b2307-d1ca-4647-ac6a-2e9db18a4db2" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/OtherAssetsandOtherLiabilitiesScheduleofOtherLiabilitiesDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#OtherAssetsandOtherLiabilitiesScheduleofOtherLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/OtherAssetsandOtherLiabilitiesScheduleofOtherLiabilitiesDetails" xlink:type="extended" id="iac6e408ad29b42f389154100e053ac30_OtherAssetsandOtherLiabilitiesScheduleofOtherLiabilitiesDetails"/>
  <link:roleRef roleURI="http://viciproperties.com/role/Debt" xlink:type="simple" xlink:href="vici-20200930.xsd#Debt"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/Debt" xlink:type="extended" id="i2daff325174f4ce0acfc97d8feeaad10_Debt"/>
  <link:roleRef roleURI="http://viciproperties.com/role/DebtTables" xlink:type="simple" xlink:href="vici-20200930.xsd#DebtTables"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/DebtTables" xlink:type="extended" id="i8e8e71e1314c473183e05e327c28cabd_DebtTables"/>
  <link:roleRef roleURI="http://viciproperties.com/role/DebtScheduleOfOutstandingIndebtednessDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#DebtScheduleOfOutstandingIndebtednessDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/DebtScheduleOfOutstandingIndebtednessDetails" xlink:type="extended" id="i0199eaeda21145948d20fae277551ddf_DebtScheduleOfOutstandingIndebtednessDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_37e8cf4a-3725-4c5c-8a8b-b2c05ee1ac0d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_4b3123bf-405f-47b7-9967-005f14909034" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_37e8cf4a-3725-4c5c-8a8b-b2c05ee1ac0d" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_4b3123bf-405f-47b7-9967-005f14909034" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_00518b8a-3e29-4938-8e11-3c71307601a8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_37e8cf4a-3725-4c5c-8a8b-b2c05ee1ac0d" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_00518b8a-3e29-4938-8e11-3c71307601a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_6066a8c3-916e-47f8-91ac-f81fb8daf931" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_37e8cf4a-3725-4c5c-8a8b-b2c05ee1ac0d" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_6066a8c3-916e-47f8-91ac-f81fb8daf931" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_e82e9ccd-c2f2-4a3f-baa2-9ad76dedc946" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_37e8cf4a-3725-4c5c-8a8b-b2c05ee1ac0d" xlink:to="loc_us-gaap_LongTermDebt_e82e9ccd-c2f2-4a3f-baa2-9ad76dedc946" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LineOfCreditFacilityIncreaseDecreaseInBorrowingCapacity_7b206d1d-c530-4288-9f82-70a10c5e40ca" xlink:href="vici-20200930.xsd#vici_LineOfCreditFacilityIncreaseDecreaseInBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_37e8cf4a-3725-4c5c-8a8b-b2c05ee1ac0d" xlink:to="loc_vici_LineOfCreditFacilityIncreaseDecreaseInBorrowingCapacity_7b206d1d-c530-4288-9f82-70a10c5e40ca" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_7defaad9-9d48-4f13-88d8-5936920c9a45" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_37e8cf4a-3725-4c5c-8a8b-b2c05ee1ac0d" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_7defaad9-9d48-4f13-88d8-5936920c9a45" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_6cfb0941-70bb-4b7b-bacc-34c35c804889" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_37e8cf4a-3725-4c5c-8a8b-b2c05ee1ac0d" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_6cfb0941-70bb-4b7b-bacc-34c35c804889" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_bd3f7134-93d8-48d5-80c3-ae6036ee90ba" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeNumberOfInstrumentsHeld"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_37e8cf4a-3725-4c5c-8a8b-b2c05ee1ac0d" xlink:to="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_bd3f7134-93d8-48d5-80c3-ae6036ee90ba" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_bc77983c-5eda-41f9-9aca-52df51202b1b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_37e8cf4a-3725-4c5c-8a8b-b2c05ee1ac0d" xlink:to="loc_us-gaap_DerivativeNotionalAmount_bc77983c-5eda-41f9-9aca-52df51202b1b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFixedInterestRate_ba02bc83-b97c-46b0-8078-c9c449bc4f4c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFixedInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_37e8cf4a-3725-4c5c-8a8b-b2c05ee1ac0d" xlink:to="loc_us-gaap_DerivativeFixedInterestRate_ba02bc83-b97c-46b0-8078-c9c449bc4f4c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_76cb8aa8-53d8-4a2b-8529-199f79af6e87" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_37e8cf4a-3725-4c5c-8a8b-b2c05ee1ac0d" xlink:to="loc_us-gaap_DebtInstrumentTable_76cb8aa8-53d8-4a2b-8529-199f79af6e87" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_898314ab-4fc8-4d35-94b6-e16f817c3c08" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_76cb8aa8-53d8-4a2b-8529-199f79af6e87" xlink:to="loc_us-gaap_CreditFacilityAxis_898314ab-4fc8-4d35-94b6-e16f817c3c08" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_898314ab-4fc8-4d35-94b6-e16f817c3c08_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_898314ab-4fc8-4d35-94b6-e16f817c3c08" xlink:to="loc_us-gaap_CreditFacilityDomain_898314ab-4fc8-4d35-94b6-e16f817c3c08_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_2b0e1d23-98c2-4b51-b144-7063057d8cea" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_898314ab-4fc8-4d35-94b6-e16f817c3c08" xlink:to="loc_us-gaap_CreditFacilityDomain_2b0e1d23-98c2-4b51-b144-7063057d8cea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_38fbcddf-15c9-4e6b-8e1c-64545844f52f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_2b0e1d23-98c2-4b51-b144-7063057d8cea" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_38fbcddf-15c9-4e6b-8e1c-64545844f52f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_e320d20a-3031-4675-954c-2ba70fca0d29" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_76cb8aa8-53d8-4a2b-8529-199f79af6e87" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_e320d20a-3031-4675-954c-2ba70fca0d29" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_e320d20a-3031-4675-954c-2ba70fca0d29_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_e320d20a-3031-4675-954c-2ba70fca0d29" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_e320d20a-3031-4675-954c-2ba70fca0d29_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_d625f99a-0894-4fb1-bb06-505bc0a0f6bf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_e320d20a-3031-4675-954c-2ba70fca0d29" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_d625f99a-0894-4fb1-bb06-505bc0a0f6bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_615c26ef-190f-41a8-ba04-c3bae59c1112" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_d625f99a-0894-4fb1-bb06-505bc0a0f6bf" xlink:to="loc_us-gaap_SeniorNotesMember_615c26ef-190f-41a8-ba04-c3bae59c1112" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_8d9416f7-de8e-4137-b83a-542f04642665" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_d625f99a-0894-4fb1-bb06-505bc0a0f6bf" xlink:to="loc_us-gaap_UnsecuredDebtMember_8d9416f7-de8e-4137-b83a-542f04642665" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_e7d1a90a-edca-4877-a686-9604276ce039" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_76cb8aa8-53d8-4a2b-8529-199f79af6e87" xlink:to="loc_us-gaap_DebtInstrumentAxis_e7d1a90a-edca-4877-a686-9604276ce039" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_e7d1a90a-edca-4877-a686-9604276ce039_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_e7d1a90a-edca-4877-a686-9604276ce039" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_e7d1a90a-edca-4877-a686-9604276ce039_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_ffc8f860-7a97-455e-a90d-3ed225d07516" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_e7d1a90a-edca-4877-a686-9604276ce039" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_ffc8f860-7a97-455e-a90d-3ed225d07516" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_TermBLoanFacilityMember_84233215-ebf0-4d5f-88c6-99506ee8cc1a" xlink:href="vici-20200930.xsd#vici_TermBLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ffc8f860-7a97-455e-a90d-3ed225d07516" xlink:to="loc_vici_TermBLoanFacilityMember_84233215-ebf0-4d5f-88c6-99506ee8cc1a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SecondLienNotesMember_25ee6118-b749-488c-b7fe-1a9705231421" xlink:href="vici-20200930.xsd#vici_SecondLienNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ffc8f860-7a97-455e-a90d-3ed225d07516" xlink:to="loc_vici_SecondLienNotesMember_25ee6118-b749-488c-b7fe-1a9705231421" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorUnsecured2025NotesMember_1e77205f-6068-42b7-aa65-711ab43fb4a2" xlink:href="vici-20200930.xsd#vici_SeniorUnsecured2025NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ffc8f860-7a97-455e-a90d-3ed225d07516" xlink:to="loc_vici_SeniorUnsecured2025NotesMember_1e77205f-6068-42b7-aa65-711ab43fb4a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorUnsecured2026NotesMember_c9418327-b3a8-41e0-8a79-acb17c60f9ee" xlink:href="vici-20200930.xsd#vici_SeniorUnsecured2026NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ffc8f860-7a97-455e-a90d-3ed225d07516" xlink:to="loc_vici_SeniorUnsecured2026NotesMember_c9418327-b3a8-41e0-8a79-acb17c60f9ee" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorUnsecured2027NotesMember_1cc3d499-8d06-4473-a6a4-f336d70254f8" xlink:href="vici-20200930.xsd#vici_SeniorUnsecured2027NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ffc8f860-7a97-455e-a90d-3ed225d07516" xlink:to="loc_vici_SeniorUnsecured2027NotesMember_1cc3d499-8d06-4473-a6a4-f336d70254f8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorUnsecured2029NotesMember_205b3e13-8423-4d71-9625-99f0bb31d3d2" xlink:href="vici-20200930.xsd#vici_SeniorUnsecured2029NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ffc8f860-7a97-455e-a90d-3ed225d07516" xlink:to="loc_vici_SeniorUnsecured2029NotesMember_205b3e13-8423-4d71-9625-99f0bb31d3d2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorUnsecured2030NotesMember_24a93c7b-acaa-47e4-8304-d9ec1231ea87" xlink:href="vici-20200930.xsd#vici_SeniorUnsecured2030NotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ffc8f860-7a97-455e-a90d-3ed225d07516" xlink:to="loc_vici_SeniorUnsecured2030NotesMember_24a93c7b-acaa-47e4-8304-d9ec1231ea87" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_0700a3b4-6e55-462e-b662-dd1060bc2597" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_76cb8aa8-53d8-4a2b-8529-199f79af6e87" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_0700a3b4-6e55-462e-b662-dd1060bc2597" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_0700a3b4-6e55-462e-b662-dd1060bc2597_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_0700a3b4-6e55-462e-b662-dd1060bc2597" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_0700a3b4-6e55-462e-b662-dd1060bc2597_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_f2080db1-5914-46a5-8a50-b7f638988bca" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_0700a3b4-6e55-462e-b662-dd1060bc2597" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_f2080db1-5914-46a5-8a50-b7f638988bca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_b20b04dd-7952-4669-b126-2910cbb6d60d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_f2080db1-5914-46a5-8a50-b7f638988bca" xlink:to="loc_us-gaap_InterestRateSwapMember_b20b04dd-7952-4669-b126-2910cbb6d60d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_695c7062-6bdf-48f9-9737-b7fe6d394750" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_76cb8aa8-53d8-4a2b-8529-199f79af6e87" xlink:to="loc_srt_RangeAxis_695c7062-6bdf-48f9-9737-b7fe6d394750" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_695c7062-6bdf-48f9-9737-b7fe6d394750_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_695c7062-6bdf-48f9-9737-b7fe6d394750" xlink:to="loc_srt_RangeMember_695c7062-6bdf-48f9-9737-b7fe6d394750_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e9ba9aa0-cb99-4695-8e03-5adf99a00bdb" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_695c7062-6bdf-48f9-9737-b7fe6d394750" xlink:to="loc_srt_RangeMember_e9ba9aa0-cb99-4695-8e03-5adf99a00bdb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_71e97a8b-faec-4cf8-a8a1-1fb0943287f3" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_e9ba9aa0-cb99-4695-8e03-5adf99a00bdb" xlink:to="loc_srt_MinimumMember_71e97a8b-faec-4cf8-a8a1-1fb0943287f3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_0dd845af-933b-497c-9856-b21f4854605c" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_e9ba9aa0-cb99-4695-8e03-5adf99a00bdb" xlink:to="loc_srt_MaximumMember_0dd845af-933b-497c-9856-b21f4854605c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_b01f48c9-51b1-46c1-81ca-ca8e42365b36" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_76cb8aa8-53d8-4a2b-8529-199f79af6e87" xlink:to="loc_us-gaap_VariableRateAxis_b01f48c9-51b1-46c1-81ca-ca8e42365b36" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_b01f48c9-51b1-46c1-81ca-ca8e42365b36_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_b01f48c9-51b1-46c1-81ca-ca8e42365b36" xlink:to="loc_us-gaap_VariableRateDomain_b01f48c9-51b1-46c1-81ca-ca8e42365b36_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_f898aaae-5e29-4753-b773-f12c7a58c6e7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_b01f48c9-51b1-46c1-81ca-ca8e42365b36" xlink:to="loc_us-gaap_VariableRateDomain_f898aaae-5e29-4753-b773-f12c7a58c6e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_dc9ad32a-d701-4e02-99fb-5f92b74e3ad8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_f898aaae-5e29-4753-b773-f12c7a58c6e7" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_dc9ad32a-d701-4e02-99fb-5f92b74e3ad8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_00ebc5f2-a2e8-4ab1-80bb-c234d9abfc3f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BaseRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_f898aaae-5e29-4753-b773-f12c7a58c6e7" xlink:to="loc_us-gaap_BaseRateMember_00ebc5f2-a2e8-4ab1-80bb-c234d9abfc3f" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/DebtScheduleofFutureMinimumRepaymentDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#DebtScheduleofFutureMinimumRepaymentDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/DebtScheduleofFutureMinimumRepaymentDetails" xlink:type="extended" id="ib4878a8de10648e68990c40cd96f6c0b_DebtScheduleofFutureMinimumRepaymentDetails"/>
  <link:roleRef roleURI="http://viciproperties.com/role/DebtSeniorUnsecuredDebtDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#DebtSeniorUnsecuredDebtDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/DebtSeniorUnsecuredDebtDetails" xlink:type="extended" id="if7636017e6f44bca935f37a8890ea27d_DebtSeniorUnsecuredDebtDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_a2490feb-e890-45d2-bc53-ea0b48937d2a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_b4d210da-2f92-428b-ad82-a54f11f265c7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_a2490feb-e890-45d2-bc53-ea0b48937d2a" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_b4d210da-2f92-428b-ad82-a54f11f265c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtExtinguishmentCosts_33495be6-b0bd-4079-a2f4-a73472c340cd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsOfDebtExtinguishmentCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_a2490feb-e890-45d2-bc53-ea0b48937d2a" xlink:to="loc_us-gaap_PaymentsOfDebtExtinguishmentCosts_33495be6-b0bd-4079-a2f4-a73472c340cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_6c8de389-4af8-4da4-a36f-7fee082dba17" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_a2490feb-e890-45d2-bc53-ea0b48937d2a" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_6c8de389-4af8-4da4-a36f-7fee082dba17" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EscrowDeposit_8c161892-44e4-4029-be4b-9ca3762a15b1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EscrowDeposit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_a2490feb-e890-45d2-bc53-ea0b48937d2a" xlink:to="loc_us-gaap_EscrowDeposit_8c161892-44e4-4029-be4b-9ca3762a15b1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_eec3e94d-2a92-4176-b5b5-e3f06b6ac3ec" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_a2490feb-e890-45d2-bc53-ea0b48937d2a" xlink:to="loc_us-gaap_RepaymentsOfDebt_eec3e94d-2a92-4176-b5b5-e3f06b6ac3ec" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtInstrumentPercentageOfAggregatePrincipalRedeemable_7b40085d-880f-4b6e-b346-2c0d46916541" xlink:href="vici-20200930.xsd#vici_DebtInstrumentPercentageOfAggregatePrincipalRedeemable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_a2490feb-e890-45d2-bc53-ea0b48937d2a" xlink:to="loc_vici_DebtInstrumentPercentageOfAggregatePrincipalRedeemable_7b40085d-880f-4b6e-b346-2c0d46916541" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_f04342d2-f206-4fc1-bac5-07dc56cbb9aa" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_a2490feb-e890-45d2-bc53-ea0b48937d2a" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_f04342d2-f206-4fc1-bac5-07dc56cbb9aa" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtInstrumentAmountRequiredToBeOutstandingForRedemption_7dc40acd-1f1f-47cd-a9cb-cb963e34827b" xlink:href="vici-20200930.xsd#vici_DebtInstrumentAmountRequiredToBeOutstandingForRedemption"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_a2490feb-e890-45d2-bc53-ea0b48937d2a" xlink:to="loc_vici_DebtInstrumentAmountRequiredToBeOutstandingForRedemption_7dc40acd-1f1f-47cd-a9cb-cb963e34827b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtCovenantCumulativeAdjustedFundsFromOperationsRate_955e8f1e-92f0-4e43-ba23-361c6cbb518b" xlink:href="vici-20200930.xsd#vici_DebtCovenantCumulativeAdjustedFundsFromOperationsRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_a2490feb-e890-45d2-bc53-ea0b48937d2a" xlink:to="loc_vici_DebtCovenantCumulativeAdjustedFundsFromOperationsRate_955e8f1e-92f0-4e43-ba23-361c6cbb518b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_RestrictedNetAssets_b5c2ef8a-cd67-4a79-a9ef-8b70541db7f1" xlink:href="vici-20200930.xsd#vici_RestrictedNetAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_a2490feb-e890-45d2-bc53-ea0b48937d2a" xlink:to="loc_vici_RestrictedNetAssets_b5c2ef8a-cd67-4a79-a9ef-8b70541db7f1" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_9f21247f-991d-47ff-bec6-7d6cac7f6c6c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_a2490feb-e890-45d2-bc53-ea0b48937d2a" xlink:to="loc_us-gaap_DebtInstrumentTable_9f21247f-991d-47ff-bec6-7d6cac7f6c6c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_30d5c69f-4cc3-4fa3-b021-320eca677ec5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9f21247f-991d-47ff-bec6-7d6cac7f6c6c" xlink:to="loc_us-gaap_DebtInstrumentAxis_30d5c69f-4cc3-4fa3-b021-320eca677ec5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_30d5c69f-4cc3-4fa3-b021-320eca677ec5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_30d5c69f-4cc3-4fa3-b021-320eca677ec5" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_30d5c69f-4cc3-4fa3-b021-320eca677ec5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_4ec649aa-6c7b-41f9-8166-5105007c5652" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_30d5c69f-4cc3-4fa3-b021-320eca677ec5" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_4ec649aa-6c7b-41f9-8166-5105007c5652" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorUnsecuredNotesdue2026Member_47b8a647-ec8b-4ab3-90fd-d3fb8f2c7952" xlink:href="vici-20200930.xsd#vici_SeniorUnsecuredNotesdue2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4ec649aa-6c7b-41f9-8166-5105007c5652" xlink:to="loc_vici_SeniorUnsecuredNotesdue2026Member_47b8a647-ec8b-4ab3-90fd-d3fb8f2c7952" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorUnsecuredNotesdue2029Member_450472a1-e084-46d4-8a37-90fae436bbbf" xlink:href="vici-20200930.xsd#vici_SeniorUnsecuredNotesdue2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4ec649aa-6c7b-41f9-8166-5105007c5652" xlink:to="loc_vici_SeniorUnsecuredNotesdue2029Member_450472a1-e084-46d4-8a37-90fae436bbbf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CPLVCMBSDebtMember_c6524ac6-ded3-4058-a599-d6c9b94d3df3" xlink:href="vici-20200930.xsd#vici_CPLVCMBSDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4ec649aa-6c7b-41f9-8166-5105007c5652" xlink:to="loc_vici_CPLVCMBSDebtMember_c6524ac6-ded3-4058-a599-d6c9b94d3df3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorUnsecuredNotesDue2025Member_78b6f877-d210-4714-a882-5a98ca7a05b3" xlink:href="vici-20200930.xsd#vici_SeniorUnsecuredNotesDue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4ec649aa-6c7b-41f9-8166-5105007c5652" xlink:to="loc_vici_SeniorUnsecuredNotesDue2025Member_78b6f877-d210-4714-a882-5a98ca7a05b3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorUnsecuredNotesIssued2019Member_646ca876-855b-4b19-9078-eff79e4c57ed" xlink:href="vici-20200930.xsd#vici_SeniorUnsecuredNotesIssued2019Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4ec649aa-6c7b-41f9-8166-5105007c5652" xlink:to="loc_vici_SeniorUnsecuredNotesIssued2019Member_646ca876-855b-4b19-9078-eff79e4c57ed" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorUnsecuredNotesDue2027Member_e6ef8e41-b2a5-4753-8d20-91d283e0214b" xlink:href="vici-20200930.xsd#vici_SeniorUnsecuredNotesDue2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4ec649aa-6c7b-41f9-8166-5105007c5652" xlink:to="loc_vici_SeniorUnsecuredNotesDue2027Member_e6ef8e41-b2a5-4753-8d20-91d283e0214b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorUnsecuredNotesDue2030Member_42606468-223a-4719-852e-e9a216c6f7c9" xlink:href="vici-20200930.xsd#vici_SeniorUnsecuredNotesDue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4ec649aa-6c7b-41f9-8166-5105007c5652" xlink:to="loc_vici_SeniorUnsecuredNotesDue2030Member_42606468-223a-4719-852e-e9a216c6f7c9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SecondLienNotesMember_3e2b7b71-502b-49bd-b180-b757e5c6c153" xlink:href="vici-20200930.xsd#vici_SecondLienNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4ec649aa-6c7b-41f9-8166-5105007c5652" xlink:to="loc_vici_SecondLienNotesMember_3e2b7b71-502b-49bd-b180-b757e5c6c153" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SecondLienNotesAndSecondLienNotesApplicablePremiumMember_296d68e6-0579-44d9-ba6c-3bb707c5ca95" xlink:href="vici-20200930.xsd#vici_SecondLienNotesAndSecondLienNotesApplicablePremiumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4ec649aa-6c7b-41f9-8166-5105007c5652" xlink:to="loc_vici_SecondLienNotesAndSecondLienNotesApplicablePremiumMember_296d68e6-0579-44d9-ba6c-3bb707c5ca95" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorUnsecuredNotesIssued2020Member_0b7f4db8-81b9-4f0d-ab1d-da1172cf03c4" xlink:href="vici-20200930.xsd#vici_SeniorUnsecuredNotesIssued2020Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_4ec649aa-6c7b-41f9-8166-5105007c5652" xlink:to="loc_vici_SeniorUnsecuredNotesIssued2020Member_0b7f4db8-81b9-4f0d-ab1d-da1172cf03c4" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_a6e14e4e-8fde-49a0-8efe-ed0885238d92" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9f21247f-991d-47ff-bec6-7d6cac7f6c6c" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_a6e14e4e-8fde-49a0-8efe-ed0885238d92" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_a6e14e4e-8fde-49a0-8efe-ed0885238d92_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_a6e14e4e-8fde-49a0-8efe-ed0885238d92" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_a6e14e4e-8fde-49a0-8efe-ed0885238d92_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_a8a3d297-cb2c-4a46-ad60-848086ca6f1f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_a6e14e4e-8fde-49a0-8efe-ed0885238d92" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_a8a3d297-cb2c-4a46-ad60-848086ca6f1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_98944709-35b7-4b68-9b62-f6fd7801fbff" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_a8a3d297-cb2c-4a46-ad60-848086ca6f1f" xlink:to="loc_us-gaap_UnsecuredDebtMember_98944709-35b7-4b68-9b62-f6fd7801fbff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnitrancheDebtMember_a0a83287-6045-40ad-8eb6-c955739201a6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_UnitrancheDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_a8a3d297-cb2c-4a46-ad60-848086ca6f1f" xlink:to="loc_us-gaap_UnitrancheDebtMember_a0a83287-6045-40ad-8eb6-c955739201a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_4da50451-aade-4cce-a869-011cbecffdf5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9f21247f-991d-47ff-bec6-7d6cac7f6c6c" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_4da50451-aade-4cce-a869-011cbecffdf5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_4da50451-aade-4cce-a869-011cbecffdf5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_4da50451-aade-4cce-a869-011cbecffdf5" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_4da50451-aade-4cce-a869-011cbecffdf5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_5ddef5e3-008e-4299-9446-6ad5401867fb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_4da50451-aade-4cce-a869-011cbecffdf5" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_5ddef5e3-008e-4299-9446-6ad5401867fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember_eae307ae-b9e3-4a50-a794-dc95cf16b29a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_5ddef5e3-008e-4299-9446-6ad5401867fb" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember_eae307ae-b9e3-4a50-a794-dc95cf16b29a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember_6ca045a3-a015-4c5e-9c03-4e7cca7df2fa" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_5ddef5e3-008e-4299-9446-6ad5401867fb" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember_6ca045a3-a015-4c5e-9c03-4e7cca7df2fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_87d23485-b7d4-4400-b66c-3c5a2b73fe4a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_5ddef5e3-008e-4299-9446-6ad5401867fb" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_87d23485-b7d4-4400-b66c-3c5a2b73fe4a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodFourMember_cfe38753-fd47-4f15-ad80-3c9eb42f65f8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_5ddef5e3-008e-4299-9446-6ad5401867fb" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodFourMember_cfe38753-fd47-4f15-ad80-3c9eb42f65f8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodFiveMember_0a7d87b9-09e0-4a43-a03c-f133ed95b20e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_5ddef5e3-008e-4299-9446-6ad5401867fb" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodFiveMember_0a7d87b9-09e0-4a43-a03c-f133ed95b20e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtInstrumentRedemptionPeriodSixMember_913a5ac7-f973-407c-9fa6-0438339295ec" xlink:href="vici-20200930.xsd#vici_DebtInstrumentRedemptionPeriodSixMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_5ddef5e3-008e-4299-9446-6ad5401867fb" xlink:to="loc_vici_DebtInstrumentRedemptionPeriodSixMember_913a5ac7-f973-407c-9fa6-0438339295ec" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_50dd6b96-b5fe-4725-8c0f-e87e442ccd8a" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9f21247f-991d-47ff-bec6-7d6cac7f6c6c" xlink:to="loc_dei_LegalEntityAxis_50dd6b96-b5fe-4725-8c0f-e87e442ccd8a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_50dd6b96-b5fe-4725-8c0f-e87e442ccd8a_default" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_50dd6b96-b5fe-4725-8c0f-e87e442ccd8a" xlink:to="loc_dei_EntityDomain_50dd6b96-b5fe-4725-8c0f-e87e442ccd8a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7a3a86b3-de3c-4c1d-bfd0-520d092efef0" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_50dd6b96-b5fe-4725-8c0f-e87e442ccd8a" xlink:to="loc_dei_EntityDomain_7a3a86b3-de3c-4c1d-bfd0-520d092efef0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_VICIPropertiesLPMember_0afd58f0-e88e-4622-8a5d-1b564013b332" xlink:href="vici-20200930.xsd#vici_VICIPropertiesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7a3a86b3-de3c-4c1d-bfd0-520d092efef0" xlink:to="loc_vici_VICIPropertiesLPMember_0afd58f0-e88e-4622-8a5d-1b564013b332" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/DebtSeniorSecuredCreditFacilitiesDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#DebtSeniorSecuredCreditFacilitiesDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/DebtSeniorSecuredCreditFacilitiesDetails" xlink:type="extended" id="i58c9f32da3b74768879c213daf793b6a_DebtSeniorSecuredCreditFacilitiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_8533771d-cb33-4813-8bb4-a5b5941c23ad" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_8533771d-cb33-4813-8bb4-a5b5941c23ad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_e1ed5a4b-fb56-4647-81b6-064b51dc7e19" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_e1ed5a4b-fb56-4647-81b6-064b51dc7e19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_8aed1659-d450-4953-9d04-d9202bac7f91" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_8aed1659-d450-4953-9d04-d9202bac7f91" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_531771ce-4632-4a74-a29a-e5508860ba15" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_531771ce-4632-4a74-a29a-e5508860ba15" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtInstrumentTotalNetDebtToAdjustedAssetRatio_39ceb6d8-cffa-48bf-af7d-d45131ac16c4" xlink:href="vici-20200930.xsd#vici_DebtInstrumentTotalNetDebtToAdjustedAssetRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_vici_DebtInstrumentTotalNetDebtToAdjustedAssetRatio_39ceb6d8-cffa-48bf-af7d-d45131ac16c4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtInstrumentPercentageOfUtilizationOfCreditFacility_4d1d6dac-6296-47c4-ba7b-229c01912988" xlink:href="vici-20200930.xsd#vici_DebtInstrumentPercentageOfUtilizationOfCreditFacility"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_vici_DebtInstrumentPercentageOfUtilizationOfCreditFacility_4d1d6dac-6296-47c4-ba7b-229c01912988" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtInstrumentPermittedAcquisitionsConsummated_99884ce3-a902-4cb3-b2fb-e7c3e4015570" xlink:href="vici-20200930.xsd#vici_DebtInstrumentPermittedAcquisitionsConsummated"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_vici_DebtInstrumentPermittedAcquisitionsConsummated_99884ce3-a902-4cb3-b2fb-e7c3e4015570" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtInstrumentEBITDAToInterestCharges_d2c1ba8b-0e29-4250-b312-46fd0ef9a99f" xlink:href="vici-20200930.xsd#vici_DebtInstrumentEBITDAToInterestCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_vici_DebtInstrumentEBITDAToInterestCharges_d2c1ba8b-0e29-4250-b312-46fd0ef9a99f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtInstrumentPercentageOfFundsFromOperations_4e005d02-bbd7-450d-8a78-e7ac25650485" xlink:href="vici-20200930.xsd#vici_DebtInstrumentPercentageOfFundsFromOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_vici_DebtInstrumentPercentageOfFundsFromOperations_4e005d02-bbd7-450d-8a78-e7ac25650485" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtCovenantPercentageOfCashDividendsOfAdjustedTotalAssetsToBeDistributed_54b9ffc2-d07d-4067-b144-2fa5b49dcf69" xlink:href="vici-20200930.xsd#vici_DebtCovenantPercentageOfCashDividendsOfAdjustedTotalAssetsToBeDistributed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_vici_DebtCovenantPercentageOfCashDividendsOfAdjustedTotalAssetsToBeDistributed_54b9ffc2-d07d-4067-b144-2fa5b49dcf69" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtCovenantAmountOfCashDividendsOfAdjustedTotalAssetsToBeDistributed_82e21cf9-01b7-47ad-9732-87ffd390d7e3" xlink:href="vici-20200930.xsd#vici_DebtCovenantAmountOfCashDividendsOfAdjustedTotalAssetsToBeDistributed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_vici_DebtCovenantAmountOfCashDividendsOfAdjustedTotalAssetsToBeDistributed_82e21cf9-01b7-47ad-9732-87ffd390d7e3" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_549aab57-d487-4267-bdba-73a1f5fa7d57" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_549aab57-d487-4267-bdba-73a1f5fa7d57" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_RepaymentOfRevolvingCreditFacility_b3eb4698-6c48-4896-95b5-dbff8c7c5997" xlink:href="vici-20200930.xsd#vici_RepaymentOfRevolvingCreditFacility"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_vici_RepaymentOfRevolvingCreditFacility_b3eb4698-6c48-4896-95b5-dbff8c7c5997" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_7ebe0328-4633-49e2-886a-c45e538353fd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_us-gaap_RepaymentsOfDebt_7ebe0328-4633-49e2-886a-c45e538353fd" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_DebtInstrumentPercentageOfAmortizationOfPrincipalAmountPerAnnum_33d0cbc8-d0a5-4d11-89e2-a8537b15ae10" xlink:href="vici-20200930.xsd#vici_DebtInstrumentPercentageOfAmortizationOfPrincipalAmountPerAnnum"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_vici_DebtInstrumentPercentageOfAmortizationOfPrincipalAmountPerAnnum_33d0cbc8-d0a5-4d11-89e2-a8537b15ae10" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_49ad18c6-8d31-4077-b146-af08dcdbbef3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_c2b60fe0-761e-47a0-8bce-7e2d6cb65943" xlink:to="loc_us-gaap_DebtInstrumentTable_49ad18c6-8d31-4077-b146-af08dcdbbef3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_68933b48-5aad-48d2-a87c-685938c777a3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_49ad18c6-8d31-4077-b146-af08dcdbbef3" xlink:to="loc_us-gaap_DebtInstrumentAxis_68933b48-5aad-48d2-a87c-685938c777a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_68933b48-5aad-48d2-a87c-685938c777a3_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_68933b48-5aad-48d2-a87c-685938c777a3" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_68933b48-5aad-48d2-a87c-685938c777a3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_25e8e73a-d585-4380-a8ea-3b786a4ce428" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_68933b48-5aad-48d2-a87c-685938c777a3" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_25e8e73a-d585-4380-a8ea-3b786a4ce428" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_TermBLoanFacilityMember_7cb3da43-ca97-4569-a23f-2cc581aa1acd" xlink:href="vici-20200930.xsd#vici_TermBLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_25e8e73a-d585-4380-a8ea-3b786a4ce428" xlink:to="loc_vici_TermBLoanFacilityMember_7cb3da43-ca97-4569-a23f-2cc581aa1acd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_89f7608c-ab53-4483-807b-046132fac10d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_49ad18c6-8d31-4077-b146-af08dcdbbef3" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_89f7608c-ab53-4483-807b-046132fac10d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_89f7608c-ab53-4483-807b-046132fac10d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_89f7608c-ab53-4483-807b-046132fac10d" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_89f7608c-ab53-4483-807b-046132fac10d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_e2ea298c-5bb3-488e-b3df-4ac73cbe3a95" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_89f7608c-ab53-4483-807b-046132fac10d" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_e2ea298c-5bb3-488e-b3df-4ac73cbe3a95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_4b872558-ba63-46c5-b411-ff880367bc11" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_e2ea298c-5bb3-488e-b3df-4ac73cbe3a95" xlink:to="loc_us-gaap_SeniorNotesMember_4b872558-ba63-46c5-b411-ff880367bc11" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_0d058414-e094-4bcd-8161-6b566e4dbe4d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_49ad18c6-8d31-4077-b146-af08dcdbbef3" xlink:to="loc_us-gaap_VariableRateAxis_0d058414-e094-4bcd-8161-6b566e4dbe4d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_0d058414-e094-4bcd-8161-6b566e4dbe4d_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_0d058414-e094-4bcd-8161-6b566e4dbe4d" xlink:to="loc_us-gaap_VariableRateDomain_0d058414-e094-4bcd-8161-6b566e4dbe4d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_55b196c4-fca3-4373-908a-1ede6299899a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_0d058414-e094-4bcd-8161-6b566e4dbe4d" xlink:to="loc_us-gaap_VariableRateDomain_55b196c4-fca3-4373-908a-1ede6299899a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_a177f4c8-1186-499f-8ba6-7ba750de0a58" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_55b196c4-fca3-4373-908a-1ede6299899a" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_a177f4c8-1186-499f-8ba6-7ba750de0a58" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_411ae13c-ae1a-4ee2-9c72-a0e3079729e7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_BaseRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_55b196c4-fca3-4373-908a-1ede6299899a" xlink:to="loc_us-gaap_BaseRateMember_411ae13c-ae1a-4ee2-9c72-a0e3079729e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_ab513946-b7f5-4c26-96f3-8a8763de82e3" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_49ad18c6-8d31-4077-b146-af08dcdbbef3" xlink:to="loc_srt_RangeAxis_ab513946-b7f5-4c26-96f3-8a8763de82e3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_ab513946-b7f5-4c26-96f3-8a8763de82e3_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_ab513946-b7f5-4c26-96f3-8a8763de82e3" xlink:to="loc_srt_RangeMember_ab513946-b7f5-4c26-96f3-8a8763de82e3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_5a140fb6-c452-493c-b399-c4feed2545f2" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_ab513946-b7f5-4c26-96f3-8a8763de82e3" xlink:to="loc_srt_RangeMember_5a140fb6-c452-493c-b399-c4feed2545f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_011ec9b0-6479-4287-aa74-5cf8b3727c20" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_5a140fb6-c452-493c-b399-c4feed2545f2" xlink:to="loc_srt_MinimumMember_011ec9b0-6479-4287-aa74-5cf8b3727c20" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_39ae0af9-0d80-463e-afb8-6db759ba4b62" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_5a140fb6-c452-493c-b399-c4feed2545f2" xlink:to="loc_srt_MaximumMember_39ae0af9-0d80-463e-afb8-6db759ba4b62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_294d578f-aa74-42c3-a77b-e8f3029db1a2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_49ad18c6-8d31-4077-b146-af08dcdbbef3" xlink:to="loc_us-gaap_CreditFacilityAxis_294d578f-aa74-42c3-a77b-e8f3029db1a2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_294d578f-aa74-42c3-a77b-e8f3029db1a2_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_294d578f-aa74-42c3-a77b-e8f3029db1a2" xlink:to="loc_us-gaap_CreditFacilityDomain_294d578f-aa74-42c3-a77b-e8f3029db1a2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_ac0c53cd-9c9d-4cc3-8470-af396d3d823c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_294d578f-aa74-42c3-a77b-e8f3029db1a2" xlink:to="loc_us-gaap_CreditFacilityDomain_ac0c53cd-9c9d-4cc3-8470-af396d3d823c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_8853d826-a031-4f05-a0cf-73fcdcdc7541" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_ac0c53cd-9c9d-4cc3-8470-af396d3d823c" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_8853d826-a031-4f05-a0cf-73fcdcdc7541" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/DebtBridgeFacilitiesDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#DebtBridgeFacilitiesDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/DebtBridgeFacilitiesDetails" xlink:type="extended" id="i7cae7b8922f14fbf81e7c11f18dd2ca7_DebtBridgeFacilitiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_ab5a1e04-d679-4f2b-b0bc-6ce4b0ad11fe" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_a157c151-2f3c-4d84-b31a-28690efa346a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab5a1e04-d679-4f2b-b0bc-6ce4b0ad11fe" xlink:to="loc_us-gaap_DebtInstrumentTerm_a157c151-2f3c-4d84-b31a-28690efa346a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_3bd47689-5ced-4739-bfbc-45a634c0c3ba" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab5a1e04-d679-4f2b-b0bc-6ce4b0ad11fe" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_3bd47689-5ced-4739-bfbc-45a634c0c3ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_d5d059f1-de5c-4a29-b491-cb5af740c156" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab5a1e04-d679-4f2b-b0bc-6ce4b0ad11fe" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_d5d059f1-de5c-4a29-b491-cb5af740c156" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LineofCreditFacilityStructuringFeePercentage_3f06d277-f5b0-4ea4-837d-980a69d93229" xlink:href="vici-20200930.xsd#vici_LineofCreditFacilityStructuringFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab5a1e04-d679-4f2b-b0bc-6ce4b0ad11fe" xlink:to="loc_vici_LineofCreditFacilityStructuringFeePercentage_3f06d277-f5b0-4ea4-837d-980a69d93229" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_6cda15d8-55b6-477e-9a31-eba876cff89c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab5a1e04-d679-4f2b-b0bc-6ce4b0ad11fe" xlink:to="loc_us-gaap_InterestExpense_6cda15d8-55b6-477e-9a31-eba876cff89c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EscrowDeposit_ad768fdb-d965-4470-b6f1-7d043a192ff9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EscrowDeposit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab5a1e04-d679-4f2b-b0bc-6ce4b0ad11fe" xlink:to="loc_us-gaap_EscrowDeposit_ad768fdb-d965-4470-b6f1-7d043a192ff9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LineOfCreditFacilityMaximumBorrowingCapacityReductionAmount_5d1c8c8e-c4bf-4dc6-9e5e-0ac5f3e83571" xlink:href="vici-20200930.xsd#vici_LineOfCreditFacilityMaximumBorrowingCapacityReductionAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab5a1e04-d679-4f2b-b0bc-6ce4b0ad11fe" xlink:to="loc_vici_LineOfCreditFacilityMaximumBorrowingCapacityReductionAmount_5d1c8c8e-c4bf-4dc6-9e5e-0ac5f3e83571" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_9f6259f7-f008-4ab8-a771-336c37053379" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_ab5a1e04-d679-4f2b-b0bc-6ce4b0ad11fe" xlink:to="loc_us-gaap_DebtInstrumentTable_9f6259f7-f008-4ab8-a771-336c37053379" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_1c12d42b-60d7-465e-b0d2-d36128c3772c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9f6259f7-f008-4ab8-a771-336c37053379" xlink:to="loc_us-gaap_CreditFacilityAxis_1c12d42b-60d7-465e-b0d2-d36128c3772c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_1c12d42b-60d7-465e-b0d2-d36128c3772c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_1c12d42b-60d7-465e-b0d2-d36128c3772c" xlink:to="loc_us-gaap_CreditFacilityDomain_1c12d42b-60d7-465e-b0d2-d36128c3772c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_651b9270-5ee8-42af-ba7e-209391982d86" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_1c12d42b-60d7-465e-b0d2-d36128c3772c" xlink:to="loc_us-gaap_CreditFacilityDomain_651b9270-5ee8-42af-ba7e-209391982d86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FirstLienSecuredBridgeFacilityMember_5d18a1e3-ab82-4059-b3c2-a25049b8c569" xlink:href="vici-20200930.xsd#vici_FirstLienSecuredBridgeFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_651b9270-5ee8-42af-ba7e-209391982d86" xlink:to="loc_vici_FirstLienSecuredBridgeFacilityMember_5d18a1e3-ab82-4059-b3c2-a25049b8c569" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SecondLienSecuredBridgeFacilityMember_00f8fa92-8107-4edd-a88c-7154fea96a46" xlink:href="vici-20200930.xsd#vici_SecondLienSecuredBridgeFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_651b9270-5ee8-42af-ba7e-209391982d86" xlink:to="loc_vici_SecondLienSecuredBridgeFacilityMember_00f8fa92-8107-4edd-a88c-7154fea96a46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_a7c53a6e-5b32-40a9-bd73-eb63d70954e8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9f6259f7-f008-4ab8-a771-336c37053379" xlink:to="loc_us-gaap_DebtInstrumentAxis_a7c53a6e-5b32-40a9-bd73-eb63d70954e8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_a7c53a6e-5b32-40a9-bd73-eb63d70954e8_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_a7c53a6e-5b32-40a9-bd73-eb63d70954e8" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_a7c53a6e-5b32-40a9-bd73-eb63d70954e8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_9c451755-2e3d-4004-a503-d60ab29d8edf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_a7c53a6e-5b32-40a9-bd73-eb63d70954e8" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_9c451755-2e3d-4004-a503-d60ab29d8edf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_EldoradoSeniorBridgeFacilityMember_f8ed6c1a-a016-4750-abac-d1829dd0cc12" xlink:href="vici-20200930.xsd#vici_EldoradoSeniorBridgeFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_9c451755-2e3d-4004-a503-d60ab29d8edf" xlink:to="loc_vici_EldoradoSeniorBridgeFacilityMember_f8ed6c1a-a016-4750-abac-d1829dd0cc12" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_1123dc72-5523-4306-be15-e2a9bf48adea" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9f6259f7-f008-4ab8-a771-336c37053379" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_1123dc72-5523-4306-be15-e2a9bf48adea" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_1123dc72-5523-4306-be15-e2a9bf48adea_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_1123dc72-5523-4306-be15-e2a9bf48adea" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_1123dc72-5523-4306-be15-e2a9bf48adea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_883e67b8-c7d7-4e58-adb7-cec54c5de482" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_1123dc72-5523-4306-be15-e2a9bf48adea" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_883e67b8-c7d7-4e58-adb7-cec54c5de482" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember_236f6495-b3ba-4c75-8b47-6dad237834b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_883e67b8-c7d7-4e58-adb7-cec54c5de482" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember_236f6495-b3ba-4c75-8b47-6dad237834b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember_c8f18882-bcbe-46a7-85ff-20ceffe6aca4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_883e67b8-c7d7-4e58-adb7-cec54c5de482" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember_c8f18882-bcbe-46a7-85ff-20ceffe6aca4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_f1f6defa-4ba1-4a8d-9c1a-21305ae18f46" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_883e67b8-c7d7-4e58-adb7-cec54c5de482" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_f1f6defa-4ba1-4a8d-9c1a-21305ae18f46" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodFourMember_24d03421-c874-4c37-951e-4503c946488a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_883e67b8-c7d7-4e58-adb7-cec54c5de482" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodFourMember_24d03421-c874-4c37-951e-4503c946488a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_59942183-8df7-4230-87bf-47a5f8289bf4" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9f6259f7-f008-4ab8-a771-336c37053379" xlink:to="loc_srt_RangeAxis_59942183-8df7-4230-87bf-47a5f8289bf4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_59942183-8df7-4230-87bf-47a5f8289bf4_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_59942183-8df7-4230-87bf-47a5f8289bf4" xlink:to="loc_srt_RangeMember_59942183-8df7-4230-87bf-47a5f8289bf4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_12025b6a-3e07-45c8-b3a1-d6bd404634a1" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_59942183-8df7-4230-87bf-47a5f8289bf4" xlink:to="loc_srt_RangeMember_12025b6a-3e07-45c8-b3a1-d6bd404634a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_f8f5e255-f676-4de0-8f26-e2fa4820ce66" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_12025b6a-3e07-45c8-b3a1-d6bd404634a1" xlink:to="loc_srt_MinimumMember_f8f5e255-f676-4de0-8f26-e2fa4820ce66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_ac03a1a5-1f59-4c2c-afc6-25476c577e51" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_12025b6a-3e07-45c8-b3a1-d6bd404634a1" xlink:to="loc_srt_MaximumMember_ac03a1a5-1f59-4c2c-afc6-25476c577e51" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/DebtSecondLienNotesDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#DebtSecondLienNotesDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/DebtSecondLienNotesDetails" xlink:type="extended" id="i201a9befcb9640d3b1c3a31e86f8aa8f_DebtSecondLienNotesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_5c503427-d9ab-4bce-9789-39fa6cfce8e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_9148f203-8576-4747-adbe-f7df87f1dba9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5c503427-d9ab-4bce-9789-39fa6cfce8e0" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_9148f203-8576-4747-adbe-f7df87f1dba9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_1f102a46-de25-4832-aed4-8c07c5e1cf21" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5c503427-d9ab-4bce-9789-39fa6cfce8e0" xlink:to="loc_us-gaap_RepaymentsOfDebt_1f102a46-de25-4832-aed4-8c07c5e1cf21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_e7a0091a-bdfb-45ba-979a-b38f9dc2ea54" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5c503427-d9ab-4bce-9789-39fa6cfce8e0" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_e7a0091a-bdfb-45ba-979a-b38f9dc2ea54" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_01f2aca8-6c3b-470e-96e5-04b13c26e3da" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5c503427-d9ab-4bce-9789-39fa6cfce8e0" xlink:to="loc_us-gaap_DebtInstrumentTable_01f2aca8-6c3b-470e-96e5-04b13c26e3da" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_2e45b581-0f8d-4b9c-9dbf-983f03eb488c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01f2aca8-6c3b-470e-96e5-04b13c26e3da" xlink:to="loc_us-gaap_DebtInstrumentAxis_2e45b581-0f8d-4b9c-9dbf-983f03eb488c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_2e45b581-0f8d-4b9c-9dbf-983f03eb488c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_2e45b581-0f8d-4b9c-9dbf-983f03eb488c" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_2e45b581-0f8d-4b9c-9dbf-983f03eb488c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_72a0394c-46ae-464d-bf6c-9fcb24cd6384" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_2e45b581-0f8d-4b9c-9dbf-983f03eb488c" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_72a0394c-46ae-464d-bf6c-9fcb24cd6384" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SecondLienNotesMember_7af94e6e-0f5b-41a4-8d44-efb900f106fb" xlink:href="vici-20200930.xsd#vici_SecondLienNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_72a0394c-46ae-464d-bf6c-9fcb24cd6384" xlink:to="loc_vici_SecondLienNotesMember_7af94e6e-0f5b-41a4-8d44-efb900f106fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_0e9f3aa9-64f9-4fef-ade0-bf9eb6592c81" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01f2aca8-6c3b-470e-96e5-04b13c26e3da" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_0e9f3aa9-64f9-4fef-ade0-bf9eb6592c81" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_0e9f3aa9-64f9-4fef-ade0-bf9eb6592c81_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_0e9f3aa9-64f9-4fef-ade0-bf9eb6592c81" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_0e9f3aa9-64f9-4fef-ade0-bf9eb6592c81_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_cfd98738-ff85-4aec-b847-841c88ec37d6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_0e9f3aa9-64f9-4fef-ade0-bf9eb6592c81" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_cfd98738-ff85-4aec-b847-841c88ec37d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_3a9068a7-c330-455f-b2d1-b983343425f5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_cfd98738-ff85-4aec-b847-841c88ec37d6" xlink:to="loc_us-gaap_SeniorNotesMember_3a9068a7-c330-455f-b2d1-b983343425f5" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/Derivatives" xlink:type="simple" xlink:href="vici-20200930.xsd#Derivatives"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/Derivatives" xlink:type="extended" id="iba753e3c0f94415b952395a64904aa3c_Derivatives"/>
  <link:roleRef roleURI="http://viciproperties.com/role/DerivativesTables" xlink:type="simple" xlink:href="vici-20200930.xsd#DerivativesTables"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/DerivativesTables" xlink:type="extended" id="i93f74edc2b4b437db59bbd9719ddc421_DerivativesTables"/>
  <link:roleRef roleURI="http://viciproperties.com/role/DerivativesNarrativeDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#DerivativesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/DerivativesNarrativeDetails" xlink:type="extended" id="ifa3354b264014c8f9c9dcc5b4a82e3c4_DerivativesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_74763558-12e1-4098-8fec-3ce16cad1ce3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_5ef22acc-b5e8-4106-8d18-bf71c5d0b6a8" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeNumberOfInstrumentsHeld"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_74763558-12e1-4098-8fec-3ce16cad1ce3" xlink:to="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_5ef22acc-b5e8-4106-8d18-bf71c5d0b6a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_12501a8e-fea1-4dd9-a68b-ec622bb7400a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_74763558-12e1-4098-8fec-3ce16cad1ce3" xlink:to="loc_us-gaap_DerivativeNotionalAmount_12501a8e-fea1-4dd9-a68b-ec622bb7400a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFixedInterestRate_24b30580-41a3-42ef-bdd0-29f8fbf22fed" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFixedInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_74763558-12e1-4098-8fec-3ce16cad1ce3" xlink:to="loc_us-gaap_DerivativeFixedInterestRate_24b30580-41a3-42ef-bdd0-29f8fbf22fed" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_VariableRateDebtnotSubjecttoInterestRateSwaps_d804f8bb-7ae2-4a97-8551-5cccb96905ee" xlink:href="vici-20200930.xsd#vici_VariableRateDebtnotSubjecttoInterestRateSwaps"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_74763558-12e1-4098-8fec-3ce16cad1ce3" xlink:to="loc_vici_VariableRateDebtnotSubjecttoInterestRateSwaps_d804f8bb-7ae2-4a97-8551-5cccb96905ee" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_2b35f2fa-833c-4c8e-b3b1-c80d34fd7123" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_74763558-12e1-4098-8fec-3ce16cad1ce3" xlink:to="loc_us-gaap_DerivativeTable_2b35f2fa-833c-4c8e-b3b1-c80d34fd7123" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_818a34e4-653e-468a-9f74-9825070ca70e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_2b35f2fa-833c-4c8e-b3b1-c80d34fd7123" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_818a34e4-653e-468a-9f74-9825070ca70e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_818a34e4-653e-468a-9f74-9825070ca70e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_818a34e4-653e-468a-9f74-9825070ca70e" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_818a34e4-653e-468a-9f74-9825070ca70e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_c54ef099-b851-4349-b9ee-d1f8ca783387" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_818a34e4-653e-468a-9f74-9825070ca70e" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_c54ef099-b851-4349-b9ee-d1f8ca783387" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_7a638b2a-84df-4b98-97c1-8b8ac5cc4771" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_c54ef099-b851-4349-b9ee-d1f8ca783387" xlink:to="loc_us-gaap_InterestRateSwapMember_7a638b2a-84df-4b98-97c1-8b8ac5cc4771" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_InterestRateSwapMaturingApril222023Member_75e3e401-0f12-42d5-bef4-b62c1102883a" xlink:href="vici-20200930.xsd#vici_InterestRateSwapMaturingApril222023Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_c54ef099-b851-4349-b9ee-d1f8ca783387" xlink:to="loc_vici_InterestRateSwapMaturingApril222023Member_75e3e401-0f12-42d5-bef4-b62c1102883a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_5ec4fc15-e132-454e-8579-b8f57517bd59" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_2b35f2fa-833c-4c8e-b3b1-c80d34fd7123" xlink:to="loc_us-gaap_DebtInstrumentAxis_5ec4fc15-e132-454e-8579-b8f57517bd59" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5ec4fc15-e132-454e-8579-b8f57517bd59_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_5ec4fc15-e132-454e-8579-b8f57517bd59" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5ec4fc15-e132-454e-8579-b8f57517bd59_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_ee2f5cff-b21e-4e7a-824c-d3bb61345086" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_5ec4fc15-e132-454e-8579-b8f57517bd59" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_ee2f5cff-b21e-4e7a-824c-d3bb61345086" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_TermBLoanFacilityMember_e331b3b2-58b5-49cb-ad5f-c1a877ad5f50" xlink:href="vici-20200930.xsd#vici_TermBLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ee2f5cff-b21e-4e7a-824c-d3bb61345086" xlink:to="loc_vici_TermBLoanFacilityMember_e331b3b2-58b5-49cb-ad5f-c1a877ad5f50" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_e19437c7-9118-47a9-b805-e2fab9e11987" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_2b35f2fa-833c-4c8e-b3b1-c80d34fd7123" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_e19437c7-9118-47a9-b805-e2fab9e11987" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_e19437c7-9118-47a9-b805-e2fab9e11987_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_e19437c7-9118-47a9-b805-e2fab9e11987" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_e19437c7-9118-47a9-b805-e2fab9e11987_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_9e599060-8eeb-4e47-b853-5c45d2568d56" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_e19437c7-9118-47a9-b805-e2fab9e11987" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_9e599060-8eeb-4e47-b853-5c45d2568d56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_1cdce0f0-0c5f-4ffa-9a4a-cf346b9b7b1d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_9e599060-8eeb-4e47-b853-5c45d2568d56" xlink:to="loc_us-gaap_SeniorNotesMember_1cdce0f0-0c5f-4ffa-9a4a-cf346b9b7b1d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/DerivativesScheduleofDerivativesDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#DerivativesScheduleofDerivativesDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/DerivativesScheduleofDerivativesDetails" xlink:type="extended" id="ice56afac950e4cf088c48dd7e1831cfb_DerivativesScheduleofDerivativesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_a0257d48-3692-4c4f-a0c7-3617e1c563ee" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_7304b67f-f162-40cc-afef-5e60ad1bd135" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeNumberOfInstrumentsHeld"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_a0257d48-3692-4c4f-a0c7-3617e1c563ee" xlink:to="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_7304b67f-f162-40cc-afef-5e60ad1bd135" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFixedInterestRate_9d645a3f-7bc4-438d-9116-9d1d540332d6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeFixedInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_a0257d48-3692-4c4f-a0c7-3617e1c563ee" xlink:to="loc_us-gaap_DerivativeFixedInterestRate_9d645a3f-7bc4-438d-9116-9d1d540332d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_9647b995-a203-4d77-b863-320dd6076559" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_a0257d48-3692-4c4f-a0c7-3617e1c563ee" xlink:to="loc_us-gaap_DerivativeNotionalAmount_9647b995-a203-4d77-b863-320dd6076559" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_fe97ab5f-6b74-4e0c-ba6d-3b0242fb3c01" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_a0257d48-3692-4c4f-a0c7-3617e1c563ee" xlink:to="loc_us-gaap_DerivativeTable_fe97ab5f-6b74-4e0c-ba6d-3b0242fb3c01" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_726fff18-4f6c-4e17-877b-8c3020ded38c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_fe97ab5f-6b74-4e0c-ba6d-3b0242fb3c01" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_726fff18-4f6c-4e17-877b-8c3020ded38c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_726fff18-4f6c-4e17-877b-8c3020ded38c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_726fff18-4f6c-4e17-877b-8c3020ded38c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_726fff18-4f6c-4e17-877b-8c3020ded38c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_87a5d580-91b5-4d7d-9b37-b91b01e5fac7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_726fff18-4f6c-4e17-877b-8c3020ded38c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_87a5d580-91b5-4d7d-9b37-b91b01e5fac7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_InterestRateSwapMaturingApril222023Member_c373628e-4a21-4c9e-aa85-febea8ca8f1c" xlink:href="vici-20200930.xsd#vici_InterestRateSwapMaturingApril222023Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_87a5d580-91b5-4d7d-9b37-b91b01e5fac7" xlink:to="loc_vici_InterestRateSwapMaturingApril222023Member_c373628e-4a21-4c9e-aa85-febea8ca8f1c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_InterestRateSwapMaturingJanuary222021Member_82d5246d-4962-412b-9af7-48aa92071154" xlink:href="vici-20200930.xsd#vici_InterestRateSwapMaturingJanuary222021Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_87a5d580-91b5-4d7d-9b37-b91b01e5fac7" xlink:to="loc_vici_InterestRateSwapMaturingJanuary222021Member_82d5246d-4962-412b-9af7-48aa92071154" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/DerivativesScheduleofDerivativesonIncomeStatementDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#DerivativesScheduleofDerivativesonIncomeStatementDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/DerivativesScheduleofDerivativesonIncomeStatementDetails" xlink:type="extended" id="i02bc066a9bc34b98a94bf846c37f3d92_DerivativesScheduleofDerivativesonIncomeStatementDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_90b8362c-6317-42e2-9045-801d91dd86c6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_8c396a18-e3a0-4d9d-b85f-a7ce17ded261" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_90b8362c-6317-42e2-9045-801d91dd86c6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_8c396a18-e3a0-4d9d-b85f-a7ce17ded261" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_78070ca2-947d-4904-a274-d7f9e94eed7c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_90b8362c-6317-42e2-9045-801d91dd86c6" xlink:to="loc_us-gaap_InterestExpense_78070ca2-947d-4904-a274-d7f9e94eed7c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_41f148d3-b71a-4f97-aa39-9539deb893ad" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_90b8362c-6317-42e2-9045-801d91dd86c6" xlink:to="loc_us-gaap_DerivativeTable_41f148d3-b71a-4f97-aa39-9539deb893ad" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_337aabf7-ea6f-43c7-8af7-5f20c3fa37db" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_41f148d3-b71a-4f97-aa39-9539deb893ad" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_337aabf7-ea6f-43c7-8af7-5f20c3fa37db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_337aabf7-ea6f-43c7-8af7-5f20c3fa37db_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_337aabf7-ea6f-43c7-8af7-5f20c3fa37db" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_337aabf7-ea6f-43c7-8af7-5f20c3fa37db_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_9955d25e-5cfd-487d-b113-77e7ddce7a72" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_337aabf7-ea6f-43c7-8af7-5f20c3fa37db" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_9955d25e-5cfd-487d-b113-77e7ddce7a72" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_974a0d14-a854-44ca-bfae-85bdd0eca28a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_9955d25e-5cfd-487d-b113-77e7ddce7a72" xlink:to="loc_us-gaap_InterestRateSwapMember_974a0d14-a854-44ca-bfae-85bdd0eca28a" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/FairValue" xlink:type="simple" xlink:href="vici-20200930.xsd#FairValue"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/FairValue" xlink:type="extended" id="i67822578f26944ec80677b32c9cd5d9a_FairValue"/>
  <link:roleRef roleURI="http://viciproperties.com/role/FairValueTables" xlink:type="simple" xlink:href="vici-20200930.xsd#FairValueTables"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/FairValueTables" xlink:type="extended" id="ibb4c3f86f9c64f7687cc57f29f3c8a90_FairValueTables"/>
  <link:roleRef roleURI="http://viciproperties.com/role/FairValueRecurringBasisDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#FairValueRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/FairValueRecurringBasisDetails" xlink:type="extended" id="i295e604dbfb24d3d86d5261b8a0fd89b_FairValueRecurringBasisDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01823ceb-ec90-4c28-a6e1-8e4b4ea0e99f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_0528bee2-5613-41f9-bf96-5954d041ea8c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01823ceb-ec90-4c28-a6e1-8e4b4ea0e99f" xlink:to="loc_us-gaap_AssetsAbstract_0528bee2-5613-41f9-bf96-5954d041ea8c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestments_296ced01-5dbb-47c4-886d-5c08b31f5d1c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShortTermInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_0528bee2-5613-41f9-bf96-5954d041ea8c" xlink:to="loc_us-gaap_ShortTermInvestments_296ced01-5dbb-47c4-886d-5c08b31f5d1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_48778fa3-7304-4019-8337-f4ed675cff98" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01823ceb-ec90-4c28-a6e1-8e4b4ea0e99f" xlink:to="loc_us-gaap_LiabilitiesAbstract_48778fa3-7304-4019-8337-f4ed675cff98" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_5408f031-2e42-4e47-bc69-00b2380a08a5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_48778fa3-7304-4019-8337-f4ed675cff98" xlink:to="loc_us-gaap_DerivativeLiabilities_5408f031-2e42-4e47-bc69-00b2380a08a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_4b9e44e9-c0c5-4647-b7c8-40fe7569e7ed" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01823ceb-ec90-4c28-a6e1-8e4b4ea0e99f" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_4b9e44e9-c0c5-4647-b7c8-40fe7569e7ed" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_b413b180-6af3-45b6-a552-3cba442385d5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_4b9e44e9-c0c5-4647-b7c8-40fe7569e7ed" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_b413b180-6af3-45b6-a552-3cba442385d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b413b180-6af3-45b6-a552-3cba442385d5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_b413b180-6af3-45b6-a552-3cba442385d5" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b413b180-6af3-45b6-a552-3cba442385d5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4cf0868b-d1ef-481d-bccc-aa8c137b2493" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_b413b180-6af3-45b6-a552-3cba442385d5" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4cf0868b-d1ef-481d-bccc-aa8c137b2493" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_3e0a9bec-dd3b-46d2-973f-616a3c60cf7d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4cf0868b-d1ef-481d-bccc-aa8c137b2493" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_3e0a9bec-dd3b-46d2-973f-616a3c60cf7d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_358ddba7-62f8-4f7b-8753-bdd684eee325" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4cf0868b-d1ef-481d-bccc-aa8c137b2493" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_358ddba7-62f8-4f7b-8753-bdd684eee325" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_45041a8c-dc85-4742-9b33-761ea87ea3af" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_4cf0868b-d1ef-481d-bccc-aa8c137b2493" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_45041a8c-dc85-4742-9b33-761ea87ea3af" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_e2423563-a213-4bc4-b79b-3a53602e082a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_4b9e44e9-c0c5-4647-b7c8-40fe7569e7ed" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_e2423563-a213-4bc4-b79b-3a53602e082a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e2423563-a213-4bc4-b79b-3a53602e082a_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_e2423563-a213-4bc4-b79b-3a53602e082a" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e2423563-a213-4bc4-b79b-3a53602e082a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_8540662e-67de-4d4a-9e07-36d48381638b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_e2423563-a213-4bc4-b79b-3a53602e082a" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_8540662e-67de-4d4a-9e07-36d48381638b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_ba770025-4274-4221-880a-eb2809eba44c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_8540662e-67de-4d4a-9e07-36d48381638b" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_ba770025-4274-4221-880a-eb2809eba44c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_1bdad593-f391-44be-9553-e17e38d21a27" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_ba770025-4274-4221-880a-eb2809eba44c" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_1bdad593-f391-44be-9553-e17e38d21a27" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_02cd8a8f-6d68-4d5a-bf10-ebe038b45f07" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_ba770025-4274-4221-880a-eb2809eba44c" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_02cd8a8f-6d68-4d5a-bf10-ebe038b45f07" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_43be700d-16a0-4374-8bc4-80adeb847b44" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_4b9e44e9-c0c5-4647-b7c8-40fe7569e7ed" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_43be700d-16a0-4374-8bc4-80adeb847b44" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_43be700d-16a0-4374-8bc4-80adeb847b44_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_43be700d-16a0-4374-8bc4-80adeb847b44" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_43be700d-16a0-4374-8bc4-80adeb847b44_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_dace2c70-d638-491c-98ed-9f73795003bf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_43be700d-16a0-4374-8bc4-80adeb847b44" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_dace2c70-d638-491c-98ed-9f73795003bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_89552305-735a-4dff-9cb2-2e100ab68ab0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_dace2c70-d638-491c-98ed-9f73795003bf" xlink:to="loc_us-gaap_InterestRateSwapMember_89552305-735a-4dff-9cb2-2e100ab68ab0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_76bb0bb2-713f-4cd6-b9cd-516ad92195ff" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_4b9e44e9-c0c5-4647-b7c8-40fe7569e7ed" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_76bb0bb2-713f-4cd6-b9cd-516ad92195ff" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_76bb0bb2-713f-4cd6-b9cd-516ad92195ff_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_76bb0bb2-713f-4cd6-b9cd-516ad92195ff" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_76bb0bb2-713f-4cd6-b9cd-516ad92195ff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_e2e4258b-6d6f-4d2c-b4ef-21666b0f13b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_76bb0bb2-713f-4cd6-b9cd-516ad92195ff" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_e2e4258b-6d6f-4d2c-b4ef-21666b0f13b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_194a58f6-2e7b-4748-a7d2-17f431b3537e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_e2e4258b-6d6f-4d2c-b4ef-21666b0f13b4" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_194a58f6-2e7b-4748-a7d2-17f431b3537e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/FairValueScheduleOfEstimatedFairValuesDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#FairValueScheduleOfEstimatedFairValuesDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/FairValueScheduleOfEstimatedFairValuesDetails" xlink:type="extended" id="i189330f0fe86452b9252021c4cae52ac_FairValueScheduleOfEstimatedFairValuesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_c8e374be-bdcc-465c-88cf-34ea23c78ecc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_255b4afc-10d2-4b18-a39b-113d730611ec" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_c8e374be-bdcc-465c-88cf-34ea23c78ecc" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_255b4afc-10d2-4b18-a39b-113d730611ec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesFairValueDisclosure_8bd4e9d5-29dc-4c81-ad1d-227facf9455d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivablesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_255b4afc-10d2-4b18-a39b-113d730611ec" xlink:to="loc_us-gaap_ReceivablesFairValueDisclosure_8bd4e9d5-29dc-4c81-ad1d-227facf9455d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_c4f0b454-cb02-465b-a619-bd8ec0dfc5dc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_255b4afc-10d2-4b18-a39b-113d730611ec" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_c4f0b454-cb02-465b-a619-bd8ec0dfc5dc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialLiabilitiesFairValueDisclosureAbstract_6f411f36-8ffe-4a27-ab05-76b83302a6ac" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinancialLiabilitiesFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_c8e374be-bdcc-465c-88cf-34ea23c78ecc" xlink:to="loc_us-gaap_FinancialLiabilitiesFairValueDisclosureAbstract_6f411f36-8ffe-4a27-ab05-76b83302a6ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_5b9270bf-4b4c-4ee9-9bdb-673333ff47ba" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialLiabilitiesFairValueDisclosureAbstract_6f411f36-8ffe-4a27-ab05-76b83302a6ac" xlink:to="loc_us-gaap_DebtInstrumentFairValue_5b9270bf-4b4c-4ee9-9bdb-673333ff47ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_a92ff58c-5e07-4ae4-8ab0-043e20b4e4ee" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_c8e374be-bdcc-465c-88cf-34ea23c78ecc" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_a92ff58c-5e07-4ae4-8ab0-043e20b4e4ee" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_c203b4a9-a2d8-45b5-a165-b5705249c2a5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_a92ff58c-5e07-4ae4-8ab0-043e20b4e4ee" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_c203b4a9-a2d8-45b5-a165-b5705249c2a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_c203b4a9-a2d8-45b5-a165-b5705249c2a5_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_c203b4a9-a2d8-45b5-a165-b5705249c2a5" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_c203b4a9-a2d8-45b5-a165-b5705249c2a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_6751c121-750f-4106-b36e-a8e8caa4cda3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_c203b4a9-a2d8-45b5-a165-b5705249c2a5" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_6751c121-750f-4106-b36e-a8e8caa4cda3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_7008561a-273b-4806-b459-8781b72a15f4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_6751c121-750f-4106-b36e-a8e8caa4cda3" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_7008561a-273b-4806-b459-8781b72a15f4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_a6d03ed5-7a2b-4059-957b-014b0c19a27e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_7008561a-273b-4806-b459-8781b72a15f4" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_a6d03ed5-7a2b-4059-957b-014b0c19a27e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_931f9f98-ba6e-407d-b6cb-0c7a75370912" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_7008561a-273b-4806-b459-8781b72a15f4" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_931f9f98-ba6e-407d-b6cb-0c7a75370912" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_a41058a7-3e6d-4711-af29-91e10562b833" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_a92ff58c-5e07-4ae4-8ab0-043e20b4e4ee" xlink:to="loc_us-gaap_DebtInstrumentAxis_a41058a7-3e6d-4711-af29-91e10562b833" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_a41058a7-3e6d-4711-af29-91e10562b833_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_a41058a7-3e6d-4711-af29-91e10562b833" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_a41058a7-3e6d-4711-af29-91e10562b833_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_28f6fd81-ca12-4aba-977a-dc73be188b3e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_a41058a7-3e6d-4711-af29-91e10562b833" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_28f6fd81-ca12-4aba-977a-dc73be188b3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_3ef822cc-c042-4450-bc6e-0f2b4d3df24f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_28f6fd81-ca12-4aba-977a-dc73be188b3e" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_3ef822cc-c042-4450-bc6e-0f2b4d3df24f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_TermBLoanFacilityMember_2fc8873d-4b8a-4154-a24e-6a8bf1a43539" xlink:href="vici-20200930.xsd#vici_TermBLoanFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_28f6fd81-ca12-4aba-977a-dc73be188b3e" xlink:to="loc_vici_TermBLoanFacilityMember_2fc8873d-4b8a-4154-a24e-6a8bf1a43539" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SecondPrioritySeniorSecuredNotesMaturingin2023Member_893a3887-bf2a-49c7-8f54-b515b8656695" xlink:href="vici-20200930.xsd#vici_SecondPrioritySeniorSecuredNotesMaturingin2023Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_28f6fd81-ca12-4aba-977a-dc73be188b3e" xlink:to="loc_vici_SecondPrioritySeniorSecuredNotesMaturingin2023Member_893a3887-bf2a-49c7-8f54-b515b8656695" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorNotesdue2025Member_777a9de8-f662-46fe-9e47-86ebfb5db645" xlink:href="vici-20200930.xsd#vici_SeniorNotesdue2025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_28f6fd81-ca12-4aba-977a-dc73be188b3e" xlink:to="loc_vici_SeniorNotesdue2025Member_777a9de8-f662-46fe-9e47-86ebfb5db645" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorNotesdue2026Member_dc38deda-d83b-48fe-bcbd-d099f51dfd1e" xlink:href="vici-20200930.xsd#vici_SeniorNotesdue2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_28f6fd81-ca12-4aba-977a-dc73be188b3e" xlink:to="loc_vici_SeniorNotesdue2026Member_dc38deda-d83b-48fe-bcbd-d099f51dfd1e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorNotesdue2027Member_712e9226-d28a-495d-b0cd-1eb30e289e9f" xlink:href="vici-20200930.xsd#vici_SeniorNotesdue2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_28f6fd81-ca12-4aba-977a-dc73be188b3e" xlink:to="loc_vici_SeniorNotesdue2027Member_712e9226-d28a-495d-b0cd-1eb30e289e9f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorNotesdue2029Member_7822a36f-ee7f-41d1-b9c9-5fec3a14e3c1" xlink:href="vici-20200930.xsd#vici_SeniorNotesdue2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_28f6fd81-ca12-4aba-977a-dc73be188b3e" xlink:to="loc_vici_SeniorNotesdue2029Member_7822a36f-ee7f-41d1-b9c9-5fec3a14e3c1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SeniorNotesdue2030Member_d86768c8-9256-4f08-b66d-e457e486b558" xlink:href="vici-20200930.xsd#vici_SeniorNotesdue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_28f6fd81-ca12-4aba-977a-dc73be188b3e" xlink:to="loc_vici_SeniorNotesdue2030Member_d86768c8-9256-4f08-b66d-e457e486b558" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_11730267-bdbd-4930-8aa0-6255cd3068e1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_a92ff58c-5e07-4ae4-8ab0-043e20b4e4ee" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_11730267-bdbd-4930-8aa0-6255cd3068e1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_11730267-bdbd-4930-8aa0-6255cd3068e1_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_11730267-bdbd-4930-8aa0-6255cd3068e1" xlink:to="loc_us-gaap_ReceivableTypeDomain_11730267-bdbd-4930-8aa0-6255cd3068e1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_34ce2cf0-385d-43b9-b976-f44f996e1bf1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_11730267-bdbd-4930-8aa0-6255cd3068e1" xlink:to="loc_us-gaap_ReceivableTypeDomain_34ce2cf0-385d-43b9-b976-f44f996e1bf1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseFinancingReceivableMember_611981a9-fe60-4623-a9c3-0dfa250eca4a" xlink:href="vici-20200930.xsd#vici_LeaseFinancingReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_34ce2cf0-385d-43b9-b976-f44f996e1bf1" xlink:to="loc_vici_LeaseFinancingReceivableMember_611981a9-fe60-4623-a9c3-0dfa250eca4a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeaseLoansReceivableMember_155b3a57-0c9f-4a8b-ba7a-5cf1814fb951" xlink:href="vici-20200930.xsd#vici_LeaseLoansReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_34ce2cf0-385d-43b9-b976-f44f996e1bf1" xlink:to="loc_vici_LeaseLoansReceivableMember_155b3a57-0c9f-4a8b-ba7a-5cf1814fb951" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/FairValueNarrativeDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#FairValueNarrativeDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/FairValueNarrativeDetails" xlink:type="extended" id="i4cb6276c8e414b10a14deffc77288018_FairValueNarrativeDetails"/>
  <link:roleRef roleURI="http://viciproperties.com/role/FairValueNonrecurringBasisDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#FairValueNonrecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/FairValueNonrecurringBasisDetails" xlink:type="extended" id="ifed60fa09cb4433ab3683624dcb07a55_FairValueNonrecurringBasisDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0e9d38-dc8e-4a0a-8724-e6cce193bb1c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_3e702fd5-be78-4ee2-9173-803bba513795" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0e9d38-dc8e-4a0a-8724-e6cce193bb1c" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_3e702fd5-be78-4ee2-9173-803bba513795" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_InvestmentInSalesTypeLeasesFairValue_a81f01f0-dd91-4e63-ae5a-b384047142a0" xlink:href="vici-20200930.xsd#vici_InvestmentInSalesTypeLeasesFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_3e702fd5-be78-4ee2-9173-803bba513795" xlink:to="loc_vici_InvestmentInSalesTypeLeasesFairValue_a81f01f0-dd91-4e63-ae5a-b384047142a0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_37835135-9c57-4c42-a4e3-ec16113961f7" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9d0e9d38-dc8e-4a0a-8724-e6cce193bb1c" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_37835135-9c57-4c42-a4e3-ec16113961f7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_aaffe71f-ddb2-48e5-8f23-5c670ba85faf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_37835135-9c57-4c42-a4e3-ec16113961f7" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_aaffe71f-ddb2-48e5-8f23-5c670ba85faf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_aaffe71f-ddb2-48e5-8f23-5c670ba85faf_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_aaffe71f-ddb2-48e5-8f23-5c670ba85faf" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_aaffe71f-ddb2-48e5-8f23-5c670ba85faf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_1dc25650-fd91-4dff-ac9c-517ab98b3c00" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_aaffe71f-ddb2-48e5-8f23-5c670ba85faf" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_1dc25650-fd91-4dff-ac9c-517ab98b3c00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_d04f32c9-7096-43dc-a55d-cdf99645588a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsNonrecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_1dc25650-fd91-4dff-ac9c-517ab98b3c00" xlink:to="loc_us-gaap_FairValueMeasurementsNonrecurringMember_d04f32c9-7096-43dc-a55d-cdf99645588a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_14b65c97-ef35-4b28-83a9-1178608c083c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_37835135-9c57-4c42-a4e3-ec16113961f7" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_14b65c97-ef35-4b28-83a9-1178608c083c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_14b65c97-ef35-4b28-83a9-1178608c083c_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_14b65c97-ef35-4b28-83a9-1178608c083c" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_14b65c97-ef35-4b28-83a9-1178608c083c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_2c356cc5-6ce9-42f4-be6c-cd218607fc5d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_14b65c97-ef35-4b28-83a9-1178608c083c" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_2c356cc5-6ce9-42f4-be6c-cd218607fc5d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_409235cc-a8ce-4206-879a-a424cfad673b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_2c356cc5-6ce9-42f4-be6c-cd218607fc5d" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_409235cc-a8ce-4206-879a-a424cfad673b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_e93c786b-fa52-4e74-84fd-f561af0027c2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_409235cc-a8ce-4206-879a-a424cfad673b" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_e93c786b-fa52-4e74-84fd-f561af0027c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_587e2013-4bbe-465c-b0ba-eadab7e16224" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_409235cc-a8ce-4206-879a-a424cfad673b" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_587e2013-4bbe-465c-b0ba-eadab7e16224" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_18eff597-fe79-4950-a216-0f3ce3c0d37b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_37835135-9c57-4c42-a4e3-ec16113961f7" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_18eff597-fe79-4950-a216-0f3ce3c0d37b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_18eff597-fe79-4950-a216-0f3ce3c0d37b_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_18eff597-fe79-4950-a216-0f3ce3c0d37b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_18eff597-fe79-4950-a216-0f3ce3c0d37b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_af9d9946-c98c-4c1c-8892-442599995c13" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_18eff597-fe79-4950-a216-0f3ce3c0d37b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_af9d9946-c98c-4c1c-8892-442599995c13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_accb9f67-70bc-4820-8931-ed82086d927b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_af9d9946-c98c-4c1c-8892-442599995c13" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_accb9f67-70bc-4820-8931-ed82086d927b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_9289c97a-61d8-4225-8aa7-864787ca1481" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_af9d9946-c98c-4c1c-8892-442599995c13" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_9289c97a-61d8-4225-8aa7-864787ca1481" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_19150fc3-cc22-4d7d-972b-33008b7c476c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_af9d9946-c98c-4c1c-8892-442599995c13" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_19150fc3-cc22-4d7d-972b-33008b7c476c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermAxis_a6a73a70-5c44-4610-9850-c1a9d1383752" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseContractualTermAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_37835135-9c57-4c42-a4e3-ec16113961f7" xlink:to="loc_us-gaap_LeaseContractualTermAxis_a6a73a70-5c44-4610-9850-c1a9d1383752" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_a6a73a70-5c44-4610-9850-c1a9d1383752_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseContractualTermDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LeaseContractualTermAxis_a6a73a70-5c44-4610-9850-c1a9d1383752" xlink:to="loc_us-gaap_LeaseContractualTermDomain_a6a73a70-5c44-4610-9850-c1a9d1383752_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_da0413b2-ca35-4422-b058-6e40f5468367" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseContractualTermDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LeaseContractualTermAxis_a6a73a70-5c44-4610-9850-c1a9d1383752" xlink:to="loc_us-gaap_LeaseContractualTermDomain_da0413b2-ca35-4422-b058-6e40f5468367" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CaesarsLeaseAgreementsMember_f70d0f8f-51eb-4b84-ba08-63da4811d67b" xlink:href="vici-20200930.xsd#vici_CaesarsLeaseAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_da0413b2-ca35-4422-b058-6e40f5468367" xlink:to="loc_vici_CaesarsLeaseAgreementsMember_f70d0f8f-51eb-4b84-ba08-63da4811d67b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_BallysAtlanticCityAndLouisianaDownsMember_d6a089cc-a1f0-4f2b-9473-61febd3a6c7b" xlink:href="vici-20200930.xsd#vici_BallysAtlanticCityAndLouisianaDownsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_da0413b2-ca35-4422-b058-6e40f5468367" xlink:to="loc_vici_BallysAtlanticCityAndLouisianaDownsMember_d6a089cc-a1f0-4f2b-9473-61febd3a6c7b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/FairValueSignificantUnobservableInputsUsedinNonrecurringLevel3Details" xlink:type="simple" xlink:href="vici-20200930.xsd#FairValueSignificantUnobservableInputsUsedinNonrecurringLevel3Details"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/FairValueSignificantUnobservableInputsUsedinNonrecurringLevel3Details" xlink:type="extended" id="ibe1f4006cb3e4814b6d39104c0b01b2d_FairValueSignificantUnobservableInputsUsedinNonrecurringLevel3Details">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_2fc30793-2f80-4a41-8229-5bcf3abedc23" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_InvestmentInSalesTypeLeasesFairValue_66b57ec9-ef19-41af-bad9-6b5313d73ab0" xlink:href="vici-20200930.xsd#vici_InvestmentInSalesTypeLeasesFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_2fc30793-2f80-4a41-8229-5bcf3abedc23" xlink:to="loc_vici_InvestmentInSalesTypeLeasesFairValue_66b57ec9-ef19-41af-bad9-6b5313d73ab0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_InvestmentsInSalesTypeLeasesMeasurementInput_dc08b360-e6a9-4976-b64c-d4286142eb49" xlink:href="vici-20200930.xsd#vici_InvestmentsInSalesTypeLeasesMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_2fc30793-2f80-4a41-8229-5bcf3abedc23" xlink:to="loc_vici_InvestmentsInSalesTypeLeasesMeasurementInput_dc08b360-e6a9-4976-b64c-d4286142eb49" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_117e97eb-2309-4ea1-8443-19cd46a99338" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_2fc30793-2f80-4a41-8229-5bcf3abedc23" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_117e97eb-2309-4ea1-8443-19cd46a99338" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_680da387-1ff3-4f3c-9beb-c25f288b751f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_117e97eb-2309-4ea1-8443-19cd46a99338" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_680da387-1ff3-4f3c-9beb-c25f288b751f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_680da387-1ff3-4f3c-9beb-c25f288b751f_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_680da387-1ff3-4f3c-9beb-c25f288b751f" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_680da387-1ff3-4f3c-9beb-c25f288b751f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_e40a7aa2-5d25-482c-af69-6d9869af14fc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_680da387-1ff3-4f3c-9beb-c25f288b751f" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_e40a7aa2-5d25-482c-af69-6d9869af14fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_a26add4d-c848-4f2f-8832-dedb0c2633b6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsNonrecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_e40a7aa2-5d25-482c-af69-6d9869af14fc" xlink:to="loc_us-gaap_FairValueMeasurementsNonrecurringMember_a26add4d-c848-4f2f-8832-dedb0c2633b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_94bf0e31-ade7-44a1-b5e4-323c2c8623b4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_117e97eb-2309-4ea1-8443-19cd46a99338" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_94bf0e31-ade7-44a1-b5e4-323c2c8623b4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_94bf0e31-ade7-44a1-b5e4-323c2c8623b4_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_94bf0e31-ade7-44a1-b5e4-323c2c8623b4" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_94bf0e31-ade7-44a1-b5e4-323c2c8623b4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6cc98b55-05e4-45df-b0bc-7acd5c8c5b2a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_94bf0e31-ade7-44a1-b5e4-323c2c8623b4" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6cc98b55-05e4-45df-b0bc-7acd5c8c5b2a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_18e7ac0e-b85f-492f-a731-72923e6e923b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6cc98b55-05e4-45df-b0bc-7acd5c8c5b2a" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_18e7ac0e-b85f-492f-a731-72923e6e923b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_aa9879b6-1997-415c-b2e2-d2625e71696e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_117e97eb-2309-4ea1-8443-19cd46a99338" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_aa9879b6-1997-415c-b2e2-d2625e71696e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_aa9879b6-1997-415c-b2e2-d2625e71696e_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_aa9879b6-1997-415c-b2e2-d2625e71696e" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_aa9879b6-1997-415c-b2e2-d2625e71696e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_672ba1e8-7409-4e95-8383-196692aee7dd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_aa9879b6-1997-415c-b2e2-d2625e71696e" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_672ba1e8-7409-4e95-8383-196692aee7dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_MeasurementInputRentMultipleMember_ef782522-06fa-4486-b81d-eb78170a68d5" xlink:href="vici-20200930.xsd#vici_MeasurementInputRentMultipleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_672ba1e8-7409-4e95-8383-196692aee7dd" xlink:to="loc_vici_MeasurementInputRentMultipleMember_ef782522-06fa-4486-b81d-eb78170a68d5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_5dd0b7f7-8676-482d-a017-18c2bdaba563" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_117e97eb-2309-4ea1-8443-19cd46a99338" xlink:to="loc_srt_RangeAxis_5dd0b7f7-8676-482d-a017-18c2bdaba563" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_5dd0b7f7-8676-482d-a017-18c2bdaba563_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_5dd0b7f7-8676-482d-a017-18c2bdaba563" xlink:to="loc_srt_RangeMember_5dd0b7f7-8676-482d-a017-18c2bdaba563_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e40f05a1-12af-4c4a-a7df-15f280f3157e" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_5dd0b7f7-8676-482d-a017-18c2bdaba563" xlink:to="loc_srt_RangeMember_e40f05a1-12af-4c4a-a7df-15f280f3157e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_e1234b91-9e3f-4a13-b7aa-5e012fbfa2e3" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_e40f05a1-12af-4c4a-a7df-15f280f3157e" xlink:to="loc_srt_MinimumMember_e1234b91-9e3f-4a13-b7aa-5e012fbfa2e3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_4ed342d9-7873-4fe2-85de-ebc37a516ba6" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_e40f05a1-12af-4c4a-a7df-15f280f3157e" xlink:to="loc_srt_MaximumMember_4ed342d9-7873-4fe2-85de-ebc37a516ba6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_WeightedAverageMember_6627a21e-98b4-4c50-bd52-f3f642e82ef1" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_WeightedAverageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_e40f05a1-12af-4c4a-a7df-15f280f3157e" xlink:to="loc_srt_WeightedAverageMember_6627a21e-98b4-4c50-bd52-f3f642e82ef1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermAxis_7adabd04-6aff-4e48-b1ed-4bfa450d7398" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseContractualTermAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_117e97eb-2309-4ea1-8443-19cd46a99338" xlink:to="loc_us-gaap_LeaseContractualTermAxis_7adabd04-6aff-4e48-b1ed-4bfa450d7398" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_7adabd04-6aff-4e48-b1ed-4bfa450d7398_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseContractualTermDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LeaseContractualTermAxis_7adabd04-6aff-4e48-b1ed-4bfa450d7398" xlink:to="loc_us-gaap_LeaseContractualTermDomain_7adabd04-6aff-4e48-b1ed-4bfa450d7398_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_adb4c35b-2ee8-4d60-85aa-60dea2a73730" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseContractualTermDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LeaseContractualTermAxis_7adabd04-6aff-4e48-b1ed-4bfa450d7398" xlink:to="loc_us-gaap_LeaseContractualTermDomain_adb4c35b-2ee8-4d60-85aa-60dea2a73730" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CaesarsLeaseAgreementsMember_477e3476-546b-434b-bc97-c88ad0bc9244" xlink:href="vici-20200930.xsd#vici_CaesarsLeaseAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_adb4c35b-2ee8-4d60-85aa-60dea2a73730" xlink:to="loc_vici_CaesarsLeaseAgreementsMember_477e3476-546b-434b-bc97-c88ad0bc9244" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/CommitmentsandContingentLiabilities" xlink:type="simple" xlink:href="vici-20200930.xsd#CommitmentsandContingentLiabilities"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CommitmentsandContingentLiabilities" xlink:type="extended" id="i85eb1b1677b747d292ed733596ead7b2_CommitmentsandContingentLiabilities"/>
  <link:roleRef roleURI="http://viciproperties.com/role/CommitmentsandContingentLiabilitiesTables" xlink:type="simple" xlink:href="vici-20200930.xsd#CommitmentsandContingentLiabilitiesTables"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CommitmentsandContingentLiabilitiesTables" xlink:type="extended" id="i587ce11cba864c6980c03387a77483d5_CommitmentsandContingentLiabilitiesTables"/>
  <link:roleRef roleURI="http://viciproperties.com/role/CommitmentsandContingentLiabilitiesNarrativeDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#CommitmentsandContingentLiabilitiesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CommitmentsandContingentLiabilitiesNarrativeDetails" xlink:type="extended" id="i0a259746bf9b4ab6bbed74b146c8e5df_CommitmentsandContingentLiabilitiesNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_16cbc2c8-279f-49d0-a454-7532e804be6a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_16cbc2c8-279f-49d0-a454-7532e804be6a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LesseeOperatingLeaseNumberOfExtensionOptions_02872a63-d5e7-4033-a115-46738a087324" xlink:href="vici-20200930.xsd#vici_LesseeOperatingLeaseNumberOfExtensionOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_vici_LesseeOperatingLeaseNumberOfExtensionOptions_02872a63-d5e7-4033-a115-46738a087324" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_94e07cd5-135c-4b56-98da-45393d40ce04" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_94e07cd5-135c-4b56-98da-45393d40ce04" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_087222d3-2ede-421e-8372-dccfc19fa40b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_087222d3-2ede-421e-8372-dccfc19fa40b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_OperatingLeaseCommitmentsFixedAnnualRent_22eee397-ad4e-4d81-bc4e-a25359398f6e" xlink:href="vici-20200930.xsd#vici_OperatingLeaseCommitmentsFixedAnnualRent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_vici_OperatingLeaseCommitmentsFixedAnnualRent_22eee397-ad4e-4d81-bc4e-a25359398f6e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseDiscountRate_55ff8a87-1bca-4f6d-ace0-2b7353d93749" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeOperatingLeaseDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_us-gaap_LesseeOperatingLeaseDiscountRate_55ff8a87-1bca-4f6d-ace0-2b7353d93749" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingStandardsUpdateExtensibleList_6ef16ac6-1cfb-4e00-ab1f-61e713262f8e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AccountingStandardsUpdateExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_us-gaap_AccountingStandardsUpdateExtensibleList_6ef16ac6-1cfb-4e00-ab1f-61e713262f8e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_599c3cdd-b671-4202-ab56-8367546661a9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_599c3cdd-b671-4202-ab56-8367546661a9" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_2422fc2f-371a-4d8b-9055-3ba60ebc55ad" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_2422fc2f-371a-4d8b-9055-3ba60ebc55ad" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList_fb03c4ee-2668-4fa1-a17a-e052d4a47ab0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList_fb03c4ee-2668-4fa1-a17a-e052d4a47ab0" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_54083ae0-055d-4b7a-af41-670c1e44e2e5" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_us-gaap_OperatingLeaseLiability_54083ae0-055d-4b7a-af41-670c1e44e2e5" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeFinanceLeaseDiscountRate_97322e25-c9fa-4ce7-9c5b-b92b30639a15" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LesseeFinanceLeaseDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_us-gaap_LesseeFinanceLeaseDiscountRate_97322e25-c9fa-4ce7-9c5b-b92b30639a15" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_dd18208a-7a48-4ad5-84a1-851d6779f64c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_dd18208a-7a48-4ad5-84a1-851d6779f64c" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_bf948142-b743-4f61-aa71-fb25b285dc04" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_fb20a618-63e2-4756-b9eb-422ed7b25c60" xlink:to="loc_us-gaap_LossContingenciesTable_bf948142-b743-4f61-aa71-fb25b285dc04" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_371fe12a-7218-4837-8edf-4f1646ae5168" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_bf948142-b743-4f61-aa71-fb25b285dc04" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_371fe12a-7218-4837-8edf-4f1646ae5168" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_371fe12a-7218-4837-8edf-4f1646ae5168_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_371fe12a-7218-4837-8edf-4f1646ae5168" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_371fe12a-7218-4837-8edf-4f1646ae5168_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3f90c5e0-2c7d-46c4-8d54-607fe6dd2652" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_371fe12a-7218-4837-8edf-4f1646ae5168" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3f90c5e0-2c7d-46c4-8d54-607fe6dd2652" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CascataGolfCourseAndVariousOfficeInNewOrleansAndNewYorkMember_fbf8b830-4038-470e-99eb-70a46a41365c" xlink:href="vici-20200930.xsd#vici_CascataGolfCourseAndVariousOfficeInNewOrleansAndNewYorkMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3f90c5e0-2c7d-46c4-8d54-607fe6dd2652" xlink:to="loc_vici_CascataGolfCourseAndVariousOfficeInNewOrleansAndNewYorkMember_fbf8b830-4038-470e-99eb-70a46a41365c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_CascataGolfCourseMember_c657adc7-b5f4-4b0e-a33f-24406fca278c" xlink:href="vici-20200930.xsd#vici_CascataGolfCourseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_CascataGolfCourseAndVariousOfficeInNewOrleansAndNewYorkMember_fbf8b830-4038-470e-99eb-70a46a41365c" xlink:to="loc_vici_CascataGolfCourseMember_c657adc7-b5f4-4b0e-a33f-24406fca278c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_NewYorkOfficesMember_ffcae2ce-e739-48a8-b453-b0012a961e01" xlink:href="vici-20200930.xsd#vici_NewYorkOfficesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3f90c5e0-2c7d-46c4-8d54-607fe6dd2652" xlink:to="loc_vici_NewYorkOfficesMember_ffcae2ce-e739-48a8-b453-b0012a961e01" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_e0810aea-b406-4416-b5c9-917ad6284303" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_bf948142-b743-4f61-aa71-fb25b285dc04" xlink:to="loc_srt_RangeAxis_e0810aea-b406-4416-b5c9-917ad6284303" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e0810aea-b406-4416-b5c9-917ad6284303_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_e0810aea-b406-4416-b5c9-917ad6284303" xlink:to="loc_srt_RangeMember_e0810aea-b406-4416-b5c9-917ad6284303_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c83048bc-cedd-49b7-b468-1c8a7087bec7" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_e0810aea-b406-4416-b5c9-917ad6284303" xlink:to="loc_srt_RangeMember_c83048bc-cedd-49b7-b468-1c8a7087bec7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_e9f9f277-4eac-4062-976f-9280ceb03e1d" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_c83048bc-cedd-49b7-b468-1c8a7087bec7" xlink:to="loc_srt_MinimumMember_e9f9f277-4eac-4062-976f-9280ceb03e1d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_2f2a3556-10f7-4fc1-ba3d-7ebcf00d5924" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_c83048bc-cedd-49b7-b468-1c8a7087bec7" xlink:to="loc_srt_MaximumMember_2f2a3556-10f7-4fc1-ba3d-7ebcf00d5924" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/CommitmentsandContingentLiabilitiesScheduleofRentExpenseDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#CommitmentsandContingentLiabilitiesScheduleofRentExpenseDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CommitmentsandContingentLiabilitiesScheduleofRentExpenseDetails" xlink:type="extended" id="i73bbea1ba059408d828e2ee3d5fddc56_CommitmentsandContingentLiabilitiesScheduleofRentExpenseDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_28f2934d-7341-422f-a074-4776550fd794" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeasesOperatingAbstract_80609edc-28c0-4637-8694-9fa909c9674f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeasesOperatingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_28f2934d-7341-422f-a074-4776550fd794" xlink:to="loc_us-gaap_LeasesOperatingAbstract_80609edc-28c0-4637-8694-9fa909c9674f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseExpense_071c5634-3c05-48a8-ae1c-52d840776f4a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingLeaseExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeasesOperatingAbstract_80609edc-28c0-4637-8694-9fa909c9674f" xlink:to="loc_us-gaap_OperatingLeaseExpense_071c5634-3c05-48a8-ae1c-52d840776f4a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRent_b21dac0f-d4bc-44af-97b3-42ff38d11733" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PaymentsForRent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeasesOperatingAbstract_80609edc-28c0-4637-8694-9fa909c9674f" xlink:to="loc_us-gaap_PaymentsForRent_b21dac0f-d4bc-44af-97b3-42ff38d11733" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_LeasesFinanceAbstract_56d41131-6592-4447-b899-72b3de3f5efe" xlink:href="vici-20200930.xsd#vici_LeasesFinanceAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_28f2934d-7341-422f-a074-4776550fd794" xlink:to="loc_vici_LeasesFinanceAbstract_56d41131-6592-4447-b899-72b3de3f5efe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SalesTypeSubLeaseAssets_645dad26-cd69-4094-97d6-75921c91b909" xlink:href="vici-20200930.xsd#vici_SalesTypeSubLeaseAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeasesFinanceAbstract_56d41131-6592-4447-b899-72b3de3f5efe" xlink:to="loc_vici_SalesTypeSubLeaseAssets_645dad26-cd69-4094-97d6-75921c91b909" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_097bf943-1313-41e7-b460-4ae67e1df49e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeasesFinanceAbstract_56d41131-6592-4447-b899-72b3de3f5efe" xlink:to="loc_us-gaap_FinanceLeaseLiability_097bf943-1313-41e7-b460-4ae67e1df49e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseIncome_eac570ad-d4c6-4422-99dc-56a75df6c9c2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LeaseIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeasesFinanceAbstract_56d41131-6592-4447-b899-72b3de3f5efe" xlink:to="loc_us-gaap_LeaseIncome_eac570ad-d4c6-4422-99dc-56a75df6c9c2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseInterestExpense_352aa5a2-6ab9-433f-92d3-0688c74fb96e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_FinanceLeaseInterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeasesFinanceAbstract_56d41131-6592-4447-b899-72b3de3f5efe" xlink:to="loc_us-gaap_FinanceLeaseInterestExpense_352aa5a2-6ab9-433f-92d3-0688c74fb96e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FinanceLeaseContractualRent_3cfb0f0d-4a31-4f1a-9c0e-d5d93650a6c6" xlink:href="vici-20200930.xsd#vici_FinanceLeaseContractualRent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vici_LeasesFinanceAbstract_56d41131-6592-4447-b899-72b3de3f5efe" xlink:to="loc_vici_FinanceLeaseContractualRent_3cfb0f0d-4a31-4f1a-9c0e-d5d93650a6c6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_d0c47190-b717-48a7-9c9f-f74bf4e76327" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_28f2934d-7341-422f-a074-4776550fd794" xlink:to="loc_us-gaap_LossContingenciesTable_d0c47190-b717-48a7-9c9f-f74bf4e76327" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_a4d25525-a9e0-49ce-ac35-c8c10329b245" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_d0c47190-b717-48a7-9c9f-f74bf4e76327" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_a4d25525-a9e0-49ce-ac35-c8c10329b245" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_a4d25525-a9e0-49ce-ac35-c8c10329b245_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_a4d25525-a9e0-49ce-ac35-c8c10329b245" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_a4d25525-a9e0-49ce-ac35-c8c10329b245_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_1155ae33-78f7-41ef-9f26-5b4e38fc9044" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_a4d25525-a9e0-49ce-ac35-c8c10329b245" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_1155ae33-78f7-41ef-9f26-5b4e38fc9044" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIncomeMember_ffe07db7-aefe-450b-bea6-730f6ad3f497" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OtherIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_1155ae33-78f7-41ef-9f26-5b4e38fc9044" xlink:to="loc_us-gaap_OtherIncomeMember_ffe07db7-aefe-450b-bea6-730f6ad3f497" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpenseMember_a23379f8-9826-4fac-aaf1-0775fec2f2e6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralAndAdministrativeExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_1155ae33-78f7-41ef-9f26-5b4e38fc9044" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpenseMember_a23379f8-9826-4fac-aaf1-0775fec2f2e6" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/CommitmentsandContingentLiabilitiesScheduleOfFutureMinimumLeasePaymentsDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#CommitmentsandContingentLiabilitiesScheduleOfFutureMinimumLeasePaymentsDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CommitmentsandContingentLiabilitiesScheduleOfFutureMinimumLeasePaymentsDetails" xlink:type="extended" id="i5a2e5b280813485685db7c35d7cf672c_CommitmentsandContingentLiabilitiesScheduleOfFutureMinimumLeasePaymentsDetails"/>
  <link:roleRef roleURI="http://viciproperties.com/role/StockholdersEquity" xlink:type="simple" xlink:href="vici-20200930.xsd#StockholdersEquity"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/StockholdersEquity" xlink:type="extended" id="i633dab411742492388623f34d008c4a5_StockholdersEquity"/>
  <link:roleRef roleURI="http://viciproperties.com/role/StockholdersEquityTables" xlink:type="simple" xlink:href="vici-20200930.xsd#StockholdersEquityTables"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/StockholdersEquityTables" xlink:type="extended" id="ia6bdddf3e1464a69a6a80c38564c03a2_StockholdersEquityTables"/>
  <link:roleRef roleURI="http://viciproperties.com/role/StockholdersEquityNarrativeDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#StockholdersEquityNarrativeDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/StockholdersEquityNarrativeDetails" xlink:type="extended" id="i170a780f0b29472cba22afc7fb37eea8_StockholdersEquityNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_TotalNumberOfCommonAndPreferredSharesAuthorized_c1aec57e-215a-4ce5-ad60-979fa6476352" xlink:href="vici-20200930.xsd#vici_TotalNumberOfCommonAndPreferredSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_vici_TotalNumberOfCommonAndPreferredSharesAuthorized_c1aec57e-215a-4ce5-ad60-979fa6476352" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_74339dcc-e620-4d74-bb0a-b071e5763b41" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_74339dcc-e620-4d74-bb0a-b071e5763b41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_a9867b68-2750-4170-b99a-55169d598251" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_a9867b68-2750-4170-b99a-55169d598251" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_17bbd350-84e8-4bfe-bc95-7e5f1d7fec0f" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_17bbd350-84e8-4bfe-bc95-7e5f1d7fec0f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_22307599-f313-4e19-8ee4-10e9ca6b1f6a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_22307599-f313-4e19-8ee4-10e9ca6b1f6a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_6527709f-cfdf-446c-8116-068ccc37f930" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_6527709f-cfdf-446c-8116-068ccc37f930" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForwardContractIndexedToIssuersEquityShares_1dcb9d9e-c5a9-4ce4-b706-b6bb0fd7d096" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ForwardContractIndexedToIssuersEquityShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_us-gaap_ForwardContractIndexedToIssuersEquityShares_1dcb9d9e-c5a9-4ce4-b706-b6bb0fd7d096" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FutureStocktobeIssuedDuringPeriodSharesSoldPursuantToTheExerciseInFullOfUnderwritersOptionToPurchaseAdditionalCommonStock_e759e2b2-e708-4196-a294-aafe3df7d8c2" xlink:href="vici-20200930.xsd#vici_FutureStocktobeIssuedDuringPeriodSharesSoldPursuantToTheExerciseInFullOfUnderwritersOptionToPurchaseAdditionalCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_vici_FutureStocktobeIssuedDuringPeriodSharesSoldPursuantToTheExerciseInFullOfUnderwritersOptionToPurchaseAdditionalCommonStock_e759e2b2-e708-4196-a294-aafe3df7d8c2" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharePrice_3bcc6de2-212a-4dc4-99b7-95586d18987e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SharePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_us-gaap_SharePrice_3bcc6de2-212a-4dc4-99b7-95586d18987e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_6d847c8c-a1d2-4dc0-9cb9-7652519fe848" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_6d847c8c-a1d2-4dc0-9cb9-7652519fe848" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_df52ffbc-a007-4898-afc7-13e1d1b8b995" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_df52ffbc-a007-4898-afc7-13e1d1b8b995" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_ba07a91b-44c5-4938-8947-6aaba479f542" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_ba07a91b-44c5-4938-8947-6aaba479f542" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockPricePerShare_24611af6-f398-4c2a-bd92-1fcf6d2cce71" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SaleOfStockPricePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_us-gaap_SaleOfStockPricePerShare_24611af6-f398-4c2a-bd92-1fcf6d2cce71" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SharesIssuedForwardSale_54e29546-78f0-477c-a46c-23f5de29c61e" xlink:href="vici-20200930.xsd#vici_SharesIssuedForwardSale"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_vici_SharesIssuedForwardSale_54e29546-78f0-477c-a46c-23f5de29c61e" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ForwardAgreementontheProceedsfromIssuanceofCommonStock_efb7f2fe-fef6-41f0-af28-35d3f679efa8" xlink:href="vici-20200930.xsd#vici_ForwardAgreementontheProceedsfromIssuanceofCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_vici_ForwardAgreementontheProceedsfromIssuanceofCommonStock_efb7f2fe-fef6-41f0-af28-35d3f679efa8" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_OfferingForwardPrice_02dfbfa9-cd92-46b9-932d-aa7c6bacdfe2" xlink:href="vici-20200930.xsd#vici_OfferingForwardPrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_vici_OfferingForwardPrice_02dfbfa9-cd92-46b9-932d-aa7c6bacdfe2" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ForwardShareAgreementsPaymentsforRepurchaseofCommonStock_970b3b6f-cd50-4119-b668-86d140df14de" xlink:href="vici-20200930.xsd#vici_ForwardShareAgreementsPaymentsforRepurchaseofCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_vici_ForwardShareAgreementsPaymentsforRepurchaseofCommonStock_970b3b6f-cd50-4119-b668-86d140df14de" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ForwardAgreementStockIssuedDuringPeriodSharesAdditionalSharesSubjectToForwardSaleAgreement_cd378247-c054-4205-a5f2-dc3c76a94d54" xlink:href="vici-20200930.xsd#vici_ForwardAgreementStockIssuedDuringPeriodSharesAdditionalSharesSubjectToForwardSaleAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_vici_ForwardAgreementStockIssuedDuringPeriodSharesAdditionalSharesSubjectToForwardSaleAgreement_cd378247-c054-4205-a5f2-dc3c76a94d54" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_MaximumAmountOfSharesToBeSold_633e4bfc-9404-4b17-8052-92f7d2e22b08" xlink:href="vici-20200930.xsd#vici_MaximumAmountOfSharesToBeSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_vici_MaximumAmountOfSharesToBeSold_633e4bfc-9404-4b17-8052-92f7d2e22b08" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_8f45de74-71f1-4915-9acd-af06efc77b7a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_36eceac9-3961-4224-a78e-2c1b9ce17ddf" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_8f45de74-71f1-4915-9acd-af06efc77b7a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_874662b6-2a08-431a-9102-e49dad6244c5" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_8f45de74-71f1-4915-9acd-af06efc77b7a" xlink:to="loc_srt_StatementScenarioAxis_874662b6-2a08-431a-9102-e49dad6244c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_874662b6-2a08-431a-9102-e49dad6244c5_default" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_874662b6-2a08-431a-9102-e49dad6244c5" xlink:to="loc_srt_ScenarioUnspecifiedDomain_874662b6-2a08-431a-9102-e49dad6244c5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_efd134cd-df5b-472f-bafc-e9115860798d" xlink:href="http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_874662b6-2a08-431a-9102-e49dad6244c5" xlink:to="loc_srt_ScenarioUnspecifiedDomain_efd134cd-df5b-472f-bafc-e9115860798d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScenarioPlanMember_b1907c6b-9acc-40aa-afd9-5c89e0c078cd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScenarioPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_efd134cd-df5b-472f-bafc-e9115860798d" xlink:to="loc_us-gaap_ScenarioPlanMember_b1907c6b-9acc-40aa-afd9-5c89e0c078cd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_e6bfcb2b-e667-41ac-8f93-f7716cae5861" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_8f45de74-71f1-4915-9acd-af06efc77b7a" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_e6bfcb2b-e667-41ac-8f93-f7716cae5861" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_e6bfcb2b-e667-41ac-8f93-f7716cae5861_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_e6bfcb2b-e667-41ac-8f93-f7716cae5861" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_e6bfcb2b-e667-41ac-8f93-f7716cae5861_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_e08c56d3-52e5-4891-9444-1195a83425ef" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_e6bfcb2b-e667-41ac-8f93-f7716cae5861" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_e08c56d3-52e5-4891-9444-1195a83425ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ForwardSalesAgreementMember_fe6a4d43-4f94-43fc-9b75-3596569d4fc7" xlink:href="vici-20200930.xsd#vici_ForwardSalesAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_e08c56d3-52e5-4891-9444-1195a83425ef" xlink:to="loc_vici_ForwardSalesAgreementMember_fe6a4d43-4f94-43fc-9b75-3596569d4fc7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ATMStockOfferingProgramMember_b860c33e-123a-4d31-987d-044e55ac577a" xlink:href="vici-20200930.xsd#vici_ATMStockOfferingProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_e08c56d3-52e5-4891-9444-1195a83425ef" xlink:to="loc_vici_ATMStockOfferingProgramMember_b860c33e-123a-4d31-987d-044e55ac577a" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/StockholdersEquityScheduleofCommonStockOutstandingDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#StockholdersEquityScheduleofCommonStockOutstandingDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/StockholdersEquityScheduleofCommonStockOutstandingDetails" xlink:type="extended" id="ia94f05160a694e7686ec30fec7af14c6_StockholdersEquityScheduleofCommonStockOutstandingDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_ecce8554-886f-4e56-a80a-69ae8dfe1b5d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_955ab74c-c734-4173-a49d-d4d95e1887cb" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_ecce8554-886f-4e56-a80a-69ae8dfe1b5d" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_955ab74c-c734-4173-a49d-d4d95e1887cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_ed676263-3fb1-41d9-82fe-450965e502c9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_955ab74c-c734-4173-a49d-d4d95e1887cb" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_ed676263-3fb1-41d9-82fe-450965e502c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_4e4008d2-f8db-4c22-9076-855ab2c1f101" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_955ab74c-c734-4173-a49d-d4d95e1887cb" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_4e4008d2-f8db-4c22-9076-855ab2c1f101" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ForwardAgreementStockIssuedDuringPeriodSharesAdditionalSharesSubjectToForwardSaleAgreement_2787d086-ce17-49a4-a03b-016b2dfb5a3d" xlink:href="vici-20200930.xsd#vici_ForwardAgreementStockIssuedDuringPeriodSharesAdditionalSharesSubjectToForwardSaleAgreement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_955ab74c-c734-4173-a49d-d4d95e1887cb" xlink:to="loc_vici_ForwardAgreementStockIssuedDuringPeriodSharesAdditionalSharesSubjectToForwardSaleAgreement_2787d086-ce17-49a4-a03b-016b2dfb5a3d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_25eb2a71-8f11-46ce-b43d-7631099c9a71" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_2ab1b695-f800-4b3a-8f11-a6e58a90e6d2" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_ecce8554-886f-4e56-a80a-69ae8dfe1b5d" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_2ab1b695-f800-4b3a-8f11-a6e58a90e6d2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_2f670880-c43a-4551-a685-f59947567f59" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_2ab1b695-f800-4b3a-8f11-a6e58a90e6d2" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_2f670880-c43a-4551-a685-f59947567f59" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_2f670880-c43a-4551-a685-f59947567f59_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_2f670880-c43a-4551-a685-f59947567f59" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_2f670880-c43a-4551-a685-f59947567f59_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_f653d087-0ec3-4580-8890-fdd27765abc9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_2f670880-c43a-4551-a685-f59947567f59" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_f653d087-0ec3-4580-8890-fdd27765abc9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_FollowOnOfferingsMember_d8976e81-3517-43b4-9088-557f3a1e080a" xlink:href="vici-20200930.xsd#vici_FollowOnOfferingsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_f653d087-0ec3-4580-8890-fdd27765abc9" xlink:to="loc_vici_FollowOnOfferingsMember_d8976e81-3517-43b4-9088-557f3a1e080a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ATMStockOfferingProgramMember_956d0dcf-f6c3-45e0-b303-cd1596b75a2c" xlink:href="vici-20200930.xsd#vici_ATMStockOfferingProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_f653d087-0ec3-4580-8890-fdd27765abc9" xlink:to="loc_vici_ATMStockOfferingProgramMember_956d0dcf-f6c3-45e0-b303-cd1596b75a2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_b1d2b8b4-c854-49eb-b84c-ce0dfeec3147" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_2ab1b695-f800-4b3a-8f11-a6e58a90e6d2" xlink:to="loc_us-gaap_AwardTypeAxis_b1d2b8b4-c854-49eb-b84c-ce0dfeec3147" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b1d2b8b4-c854-49eb-b84c-ce0dfeec3147_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_b1d2b8b4-c854-49eb-b84c-ce0dfeec3147" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b1d2b8b4-c854-49eb-b84c-ce0dfeec3147_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_bd7c3d7e-62b4-4534-8928-5dceec595b39" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_b1d2b8b4-c854-49eb-b84c-ce0dfeec3147" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_bd7c3d7e-62b4-4534-8928-5dceec595b39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_StockIncentivePlanMember_3aa6aef5-f20e-481e-baee-297af0e4861f" xlink:href="vici-20200930.xsd#vici_StockIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_bd7c3d7e-62b4-4534-8928-5dceec595b39" xlink:to="loc_vici_StockIncentivePlanMember_3aa6aef5-f20e-481e-baee-297af0e4861f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_PerformanceBasedStockIncentivePlanMember_bb2d1f38-659b-452f-a48a-dea6b1244617" xlink:href="vici-20200930.xsd#vici_PerformanceBasedStockIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_bd7c3d7e-62b4-4534-8928-5dceec595b39" xlink:to="loc_vici_PerformanceBasedStockIncentivePlanMember_bb2d1f38-659b-452f-a48a-dea6b1244617" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/StockholdersEquityScheduleofDividendsDeclaredDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#StockholdersEquityScheduleofDividendsDeclaredDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/StockholdersEquityScheduleofDividendsDeclaredDetails" xlink:type="extended" id="i9fb2b77add924544bc86b86584fc2cad_StockholdersEquityScheduleofDividendsDeclaredDetails"/>
  <link:roleRef roleURI="http://viciproperties.com/role/EarningsPerShare" xlink:type="simple" xlink:href="vici-20200930.xsd#EarningsPerShare"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/EarningsPerShare" xlink:type="extended" id="i2c4e164896374033b92f14dca1ab79a8_EarningsPerShare"/>
  <link:roleRef roleURI="http://viciproperties.com/role/EarningsPerShareTables" xlink:type="simple" xlink:href="vici-20200930.xsd#EarningsPerShareTables"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/EarningsPerShareTables" xlink:type="extended" id="id48ea8e2d8cf46a09a0ad48fb028ba21_EarningsPerShareTables"/>
  <link:roleRef roleURI="http://viciproperties.com/role/EarningsPerShareScheduleOfWeightedAverageEarningsPerShareDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#EarningsPerShareScheduleOfWeightedAverageEarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/EarningsPerShareScheduleOfWeightedAverageEarningsPerShareDetails" xlink:type="extended" id="iddc3738174334b518fcf3641bc15de0e_EarningsPerShareScheduleOfWeightedAverageEarningsPerShareDetails"/>
  <link:roleRef roleURI="http://viciproperties.com/role/EarningsPerShareScheduleOfBasicAndDilutedEarningsPerShareDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#EarningsPerShareScheduleOfBasicAndDilutedEarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/EarningsPerShareScheduleOfBasicAndDilutedEarningsPerShareDetails" xlink:type="extended" id="i439e7b93c1d6484f92d33c4c32c1af22_EarningsPerShareScheduleOfBasicAndDilutedEarningsPerShareDetails"/>
  <link:roleRef roleURI="http://viciproperties.com/role/StockBasedCompensation" xlink:type="simple" xlink:href="vici-20200930.xsd#StockBasedCompensation"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/StockBasedCompensation" xlink:type="extended" id="i67940d6ade064840872cefe9b9afa4bf_StockBasedCompensation"/>
  <link:roleRef roleURI="http://viciproperties.com/role/StockBasedCompensationTables" xlink:type="simple" xlink:href="vici-20200930.xsd#StockBasedCompensationTables"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/StockBasedCompensationTables" xlink:type="extended" id="i00c3bcfb28db413c81b4079d7f26471b_StockBasedCompensationTables"/>
  <link:roleRef roleURI="http://viciproperties.com/role/StockBasedCompensationNarrativeDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#StockBasedCompensationNarrativeDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/StockBasedCompensationNarrativeDetails" xlink:type="extended" id="ie512d0017a3645e1ae934e5457476c22_StockBasedCompensationNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_461ba740-4368-46e4-abe3-048d9fcdea79" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_f278a967-bd91-46af-87e4-1808930c2ff4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_461ba740-4368-46e4-abe3-048d9fcdea79" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_f278a967-bd91-46af-87e4-1808930c2ff4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfRemainingSharesAuthorized_e60f09fa-c5bf-446e-a59f-e3ac94e399d7" xlink:href="vici-20200930.xsd#vici_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfRemainingSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_461ba740-4368-46e4-abe3-048d9fcdea79" xlink:to="loc_vici_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfRemainingSharesAuthorized_e60f09fa-c5bf-446e-a59f-e3ac94e399d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_1f536519-d41b-4e57-b36c-0487f960a8a4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_461ba740-4368-46e4-abe3-048d9fcdea79" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_1f536519-d41b-4e57-b36c-0487f960a8a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_5818d4e3-c287-45dd-839c-14d82f035fa6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_461ba740-4368-46e4-abe3-048d9fcdea79" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms_5818d4e3-c287-45dd-839c-14d82f035fa6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_72f7a149-f86e-4dd0-8cc3-8d031c36d863" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_461ba740-4368-46e4-abe3-048d9fcdea79" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_72f7a149-f86e-4dd0-8cc3-8d031c36d863" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_81017642-2b5a-40f7-b02e-52bbeca38f15" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_72f7a149-f86e-4dd0-8cc3-8d031c36d863" xlink:to="loc_us-gaap_AwardTypeAxis_81017642-2b5a-40f7-b02e-52bbeca38f15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_81017642-2b5a-40f7-b02e-52bbeca38f15_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_81017642-2b5a-40f7-b02e-52bbeca38f15" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_81017642-2b5a-40f7-b02e-52bbeca38f15_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6cda55ef-212e-4b4e-9cf1-7e4aa4768916" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_81017642-2b5a-40f7-b02e-52bbeca38f15" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6cda55ef-212e-4b4e-9cf1-7e4aa4768916" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_StockIncentivePlanMember_a405875f-d6b5-49f7-a08b-458b1b5296a9" xlink:href="vici-20200930.xsd#vici_StockIncentivePlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6cda55ef-212e-4b4e-9cf1-7e4aa4768916" xlink:to="loc_vici_StockIncentivePlanMember_a405875f-d6b5-49f7-a08b-458b1b5296a9" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/StockBasedCompensationScheduleofCompensationExpenseDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#StockBasedCompensationScheduleofCompensationExpenseDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/StockBasedCompensationScheduleofCompensationExpenseDetails" xlink:type="extended" id="ia1e171c98e9844ae80cd88501fcd0346_StockBasedCompensationScheduleofCompensationExpenseDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9c03f0ed-5e91-4192-80e6-61cd16bca2b1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_f4f06c3d-b16e-4b2d-8076-4b4f43b86153" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9c03f0ed-5e91-4192-80e6-61cd16bca2b1" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_f4f06c3d-b16e-4b2d-8076-4b4f43b86153" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_db3de966-8c6a-4e73-a946-2260559e09e6" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9c03f0ed-5e91-4192-80e6-61cd16bca2b1" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_db3de966-8c6a-4e73-a946-2260559e09e6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_e339ae35-d852-4533-a1ba-6e2e81690ce0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_db3de966-8c6a-4e73-a946-2260559e09e6" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_e339ae35-d852-4533-a1ba-6e2e81690ce0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_e339ae35-d852-4533-a1ba-6e2e81690ce0_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_e339ae35-d852-4533-a1ba-6e2e81690ce0" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_e339ae35-d852-4533-a1ba-6e2e81690ce0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_2be1a581-896d-4228-8de2-c3b68b2fec3b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_e339ae35-d852-4533-a1ba-6e2e81690ce0" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_2be1a581-896d-4228-8de2-c3b68b2fec3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpenseMember_c54e9625-eb3f-433a-8620-b7501621534d" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GeneralAndAdministrativeExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_2be1a581-896d-4228-8de2-c3b68b2fec3b" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpenseMember_c54e9625-eb3f-433a-8620-b7501621534d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/StockBasedCompensationScheduleOfRestrictedStockDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#StockBasedCompensationScheduleOfRestrictedStockDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/StockBasedCompensationScheduleOfRestrictedStockDetails" xlink:type="extended" id="i878fef2abf6c422181be67162bbc8892_StockBasedCompensationScheduleOfRestrictedStockDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_86674193-6ac8-4576-82ca-ad56c4311340" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_c43cd5f3-02c9-4483-b498-6853b30c5c78" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_86674193-6ac8-4576-82ca-ad56c4311340" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_c43cd5f3-02c9-4483-b498-6853b30c5c78" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_51162c33-ca8e-4276-8b07-beffe09c1eb3" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_c43cd5f3-02c9-4483-b498-6853b30c5c78" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_51162c33-ca8e-4276-8b07-beffe09c1eb3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_dab7c2e4-bcd6-4863-831f-5f430928cb6a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_c43cd5f3-02c9-4483-b498-6853b30c5c78" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_dab7c2e4-bcd6-4863-831f-5f430928cb6a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_f988a0b0-c190-43f1-9559-c70663483925" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_c43cd5f3-02c9-4483-b498-6853b30c5c78" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_f988a0b0-c190-43f1-9559-c70663483925" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_8c8e663d-28b3-4c0c-ac09-5929f474e266" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_c43cd5f3-02c9-4483-b498-6853b30c5c78" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_8c8e663d-28b3-4c0c-ac09-5929f474e266" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCanceledinPeriod_29f3a8b6-67ea-495b-b881-d83c46bae448" xlink:href="vici-20200930.xsd#vici_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCanceledinPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_c43cd5f3-02c9-4483-b498-6853b30c5c78" xlink:to="loc_vici_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCanceledinPeriod_29f3a8b6-67ea-495b-b881-d83c46bae448" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2e74ad37-8f1d-47a1-8ebb-9a912dd9643a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_f164a1b7-0aa7-447c-bb15-310da9902e33" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_86674193-6ac8-4576-82ca-ad56c4311340" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_f164a1b7-0aa7-447c-bb15-310da9902e33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_5dadca81-14d1-4879-b79c-78e0da72df7e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_f164a1b7-0aa7-447c-bb15-310da9902e33" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_5dadca81-14d1-4879-b79c-78e0da72df7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_fa017770-6425-4bca-a844-dc2a84d9db6b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_f164a1b7-0aa7-447c-bb15-310da9902e33" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_fa017770-6425-4bca-a844-dc2a84d9db6b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_19624447-bcbe-4975-9cac-f7dfca05540c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_f164a1b7-0aa7-447c-bb15-310da9902e33" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_19624447-bcbe-4975-9cac-f7dfca05540c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_c7197986-1aa2-4507-b5eb-77cad1fd6c36" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_f164a1b7-0aa7-447c-bb15-310da9902e33" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_c7197986-1aa2-4507-b5eb-77cad1fd6c36" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCanceledWeightedAverageGrantDateFairValue_f0abaee0-e97e-4170-9385-d045a18c0f70" xlink:href="vici-20200930.xsd#vici_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCanceledWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_f164a1b7-0aa7-447c-bb15-310da9902e33" xlink:to="loc_vici_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsCanceledWeightedAverageGrantDateFairValue_f0abaee0-e97e-4170-9385-d045a18c0f70" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_f1c44bb3-308b-46a7-bede-797188abab6a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_f5be6d09-5956-47e5-beb0-4e26e5344879" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_86674193-6ac8-4576-82ca-ad56c4311340" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_f5be6d09-5956-47e5-beb0-4e26e5344879" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_4c44285c-c144-46fc-8a37-f4dc4b7f06fd" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_f5be6d09-5956-47e5-beb0-4e26e5344879" xlink:to="loc_us-gaap_AwardTypeAxis_4c44285c-c144-46fc-8a37-f4dc4b7f06fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4c44285c-c144-46fc-8a37-f4dc4b7f06fd_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_4c44285c-c144-46fc-8a37-f4dc4b7f06fd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4c44285c-c144-46fc-8a37-f4dc4b7f06fd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_06704874-e71c-4ba5-90d2-90b254c132f4" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_4c44285c-c144-46fc-8a37-f4dc4b7f06fd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_06704874-e71c-4ba5-90d2-90b254c132f4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_189b4432-d0b1-47a4-8b12-4cadc78ffc6b" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_06704874-e71c-4ba5-90d2-90b254c132f4" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_189b4432-d0b1-47a4-8b12-4cadc78ffc6b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/SegmentInformation" xlink:type="simple" xlink:href="vici-20200930.xsd#SegmentInformation"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/SegmentInformation" xlink:type="extended" id="i9b92d2e109bc45bb931419d6221fc235_SegmentInformation"/>
  <link:roleRef roleURI="http://viciproperties.com/role/SegmentInformationTables" xlink:type="simple" xlink:href="vici-20200930.xsd#SegmentInformationTables"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/SegmentInformationTables" xlink:type="extended" id="i4dff9210f0ad4d5983bd97219131004b_SegmentInformationTables"/>
  <link:roleRef roleURI="http://viciproperties.com/role/SegmentInformationNarrativeDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#SegmentInformationNarrativeDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/SegmentInformationNarrativeDetails" xlink:type="extended" id="iab68db5f89a8489cb06a8196204006db_SegmentInformationNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_43dd6233-9b98-420d-8339-00948e733ea1" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_45e8a48b-98c9-49bc-b40c-14b6764db750" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_43dd6233-9b98-420d-8339-00948e733ea1" xlink:to="loc_us-gaap_NumberOfReportableSegments_45e8a48b-98c9-49bc-b40c-14b6764db750" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfRealEstateProperties_618eeb6f-2a4e-40be-be75-3101bca125e0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_NumberOfRealEstateProperties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_43dd6233-9b98-420d-8339-00948e733ea1" xlink:to="loc_us-gaap_NumberOfRealEstateProperties_618eeb6f-2a4e-40be-be75-3101bca125e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_7e2e3bf2-9ef1-435e-a2a4-827302fecc31" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_43dd6233-9b98-420d-8339-00948e733ea1" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_7e2e3bf2-9ef1-435e-a2a4-827302fecc31" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_afe643d1-b51f-4dbf-b5cd-3040c260d3c9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_7e2e3bf2-9ef1-435e-a2a4-827302fecc31" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_afe643d1-b51f-4dbf-b5cd-3040c260d3c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_afe643d1-b51f-4dbf-b5cd-3040c260d3c9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_afe643d1-b51f-4dbf-b5cd-3040c260d3c9" xlink:to="loc_us-gaap_SegmentDomain_afe643d1-b51f-4dbf-b5cd-3040c260d3c9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_35fa8d5e-c014-4181-a188-6c9cc6efb8fc" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_afe643d1-b51f-4dbf-b5cd-3040c260d3c9" xlink:to="loc_us-gaap_SegmentDomain_35fa8d5e-c014-4181-a188-6c9cc6efb8fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_GolfCourseBusinessSegmentMember_4078236e-592e-42a4-b1a8-1d3a1986c243" xlink:href="vici-20200930.xsd#vici_GolfCourseBusinessSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_35fa8d5e-c014-4181-a188-6c9cc6efb8fc" xlink:to="loc_vici_GolfCourseBusinessSegmentMember_4078236e-592e-42a4-b1a8-1d3a1986c243" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/SegmentInformationScheduleOfSegmentInformationDetails" xlink:type="simple" xlink:href="vici-20200930.xsd#SegmentInformationScheduleOfSegmentInformationDetails"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/SegmentInformationScheduleOfSegmentInformationDetails" xlink:type="extended" id="i001bf500b2a0411da5d37d978ac357bd_SegmentInformationScheduleOfSegmentInformationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_303fbba8-5cc8-4dd7-8f32-ef87a206a788" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:to="loc_us-gaap_Revenues_303fbba8-5cc8-4dd7-8f32-ef87a206a788" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_5b5c6940-0b09-4138-94ea-8a9e654a2424" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:to="loc_us-gaap_OperatingIncomeLoss_5b5c6940-0b09-4138-94ea-8a9e654a2424" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_f1d36b4f-b9fb-40a2-9ae0-d0d41f7539ce" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:to="loc_us-gaap_InterestExpense_f1d36b4f-b9fb-40a2-9ae0-d0d41f7539ce" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_GainUponLeaseModification_8ae51a13-7e2c-4b79-bc6e-5b7bc853d67e" xlink:href="vici-20200930.xsd#vici_GainUponLeaseModification"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:to="loc_vici_GainUponLeaseModification_8ae51a13-7e2c-4b79-bc6e-5b7bc853d67e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_78fec25d-fd3e-4f35-937a-997d93bc2f04" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_78fec25d-fd3e-4f35-937a-997d93bc2f04" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_440eac02-c440-4def-a1ea-ce2fba54d06a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_440eac02-c440-4def-a1ea-ce2fba54d06a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_d96a1559-87b7-4eac-ae62-cf6ff40f1c73" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_d96a1559-87b7-4eac-ae62-cf6ff40f1c73" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_06d9a19a-8d4b-4a94-9bc5-bd459a651a28" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:to="loc_us-gaap_ProfitLoss_06d9a19a-8d4b-4a94-9bc5-bd459a651a28" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_ecb4fe55-d578-4b5e-a2d9-3eb312aeb004" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:to="loc_us-gaap_Depreciation_ecb4fe55-d578-4b5e-a2d9-3eb312aeb004" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_50311fdb-e50b-4040-8ea6-f19042ada60c" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:to="loc_us-gaap_Assets_50311fdb-e50b-4040-8ea6-f19042ada60c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_aedd41f3-9da6-435f-906f-11e13ed8840e" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:to="loc_us-gaap_Liabilities_aedd41f3-9da6-435f-906f-11e13ed8840e" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5456a041-2c4d-4537-9eeb-155d59bc874a" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_e6843a20-46f1-4f6a-93c8-3658808a9d5c" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5456a041-2c4d-4537-9eeb-155d59bc874a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_9eec9450-7c40-4bc4-ad81-dcf43d53f2e9" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_5456a041-2c4d-4537-9eeb-155d59bc874a" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_9eec9450-7c40-4bc4-ad81-dcf43d53f2e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_9eec9450-7c40-4bc4-ad81-dcf43d53f2e9_default" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_9eec9450-7c40-4bc4-ad81-dcf43d53f2e9" xlink:to="loc_us-gaap_SegmentDomain_9eec9450-7c40-4bc4-ad81-dcf43d53f2e9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_530c4b91-4333-42d5-8f0e-874729d45fa0" xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_9eec9450-7c40-4bc4-ad81-dcf43d53f2e9" xlink:to="loc_us-gaap_SegmentDomain_530c4b91-4333-42d5-8f0e-874729d45fa0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_RealPropertyBusinessSegmentMember_5d831d05-3e4b-4eea-a389-cf7351ae1515" xlink:href="vici-20200930.xsd#vici_RealPropertyBusinessSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_530c4b91-4333-42d5-8f0e-874729d45fa0" xlink:to="loc_vici_RealPropertyBusinessSegmentMember_5d831d05-3e4b-4eea-a389-cf7351ae1515" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_GolfCourseBusinessSegmentMember_a93924e7-ebf8-422c-b30f-a160b8710e07" xlink:href="vici-20200930.xsd#vici_GolfCourseBusinessSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_530c4b91-4333-42d5-8f0e-874729d45fa0" xlink:to="loc_vici_GolfCourseBusinessSegmentMember_a93924e7-ebf8-422c-b30f-a160b8710e07" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://viciproperties.com/role/SubsequentEvents" xlink:type="simple" xlink:href="vici-20200930.xsd#SubsequentEvents"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/SubsequentEvents" xlink:type="extended" id="i3f1d580cbc1344d0a5cd1e179f49a4dc_SubsequentEvents"/>
</link:linkbase>
