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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a17a28-8b29-741a-ba0b-5e8e9093c39d,g:e4f9af00-da60-48bb-b26c-a57635e35419-->
<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-20261028.xsd#CoverPage"/>
  <link:definitionLink xlink:role="http://viciproperties.com/role/CoverPage" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_01a17a28-8b29-7d35-b4c5-a7b44494657c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_DocumentInformationTable_01a17a28-8b29-7d35-b4c5-a7b44494657c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_01a17a28-8b29-72b0-a132-b60ed0450e58" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_01a17a28-8b29-7d35-b4c5-a7b44494657c" xlink:to="loc_dei_LegalEntityAxis_01a17a28-8b29-72b0-a132-b60ed0450e58" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a17a28-8b29-72b0-a132-b60ed0450e58_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01a17a28-8b29-72b0-a132-b60ed0450e58" xlink:to="loc_dei_EntityDomain_01a17a28-8b29-72b0-a132-b60ed0450e58_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a17a28-8b29-78eb-b295-59850add8752" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01a17a28-8b29-72b0-a132-b60ed0450e58" xlink:to="loc_dei_EntityDomain_01a17a28-8b29-78eb-b295-59850add8752" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_vici_VICIPropertiesLPMember_01a17a28-8b29-701e-9768-e0c1b63b0fdf" xlink:href="vici-20261028.xsd#vici_VICIPropertiesLPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a17a28-8b29-78eb-b295-59850add8752" xlink:to="loc_vici_VICIPropertiesLPMember_01a17a28-8b29-701e-9768-e0c1b63b0fdf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_01a17a28-8b29-7443-9d4c-6d2455554cae" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_DocumentType_01a17a28-8b29-7443-9d4c-6d2455554cae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_01a17a28-8b29-78dc-9a2b-581ace77c9e9" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_DocumentPeriodEndDate_01a17a28-8b29-78dc-9a2b-581ace77c9e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_01a17a28-8b29-75df-a868-7d7244bf4df3" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_EntityRegistrantName_01a17a28-8b29-75df-a868-7d7244bf4df3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_01a17a28-8b29-7a01-b048-3d4094e824a1" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_EntityIncorporationStateCountryCode_01a17a28-8b29-7a01-b048-3d4094e824a1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_01a17a28-8b29-7cc4-9c49-f3f57a16081a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_EntityFileNumber_01a17a28-8b29-7cc4-9c49-f3f57a16081a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_01a17a28-8b29-7fc2-998e-7b955956ac26" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_EntityTaxIdentificationNumber_01a17a28-8b29-7fc2-998e-7b955956ac26" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_01a17a28-8b29-7127-81ba-92ccfc644314" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_EntityAddressAddressLine1_01a17a28-8b29-7127-81ba-92ccfc644314" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_01a17a28-8b29-7587-9f2a-545e212a2a0a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_EntityAddressCityOrTown_01a17a28-8b29-7587-9f2a-545e212a2a0a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_01a17a28-8b29-7177-92b0-63972b56d0bd" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_EntityAddressStateOrProvince_01a17a28-8b29-7177-92b0-63972b56d0bd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_01a17a28-8b29-7b86-a4f8-966ea2713c38" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_EntityAddressPostalZipCode_01a17a28-8b29-7b86-a4f8-966ea2713c38" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_01a17a28-8b29-760e-af06-8448a033d9ee" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_CityAreaCode_01a17a28-8b29-760e-af06-8448a033d9ee" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_01a17a28-8b29-7990-8c6c-6cb86a6e3a30" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_LocalPhoneNumber_01a17a28-8b29-7990-8c6c-6cb86a6e3a30" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_01a17a28-8b29-7541-867c-061566c76dd0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_WrittenCommunications_01a17a28-8b29-7541-867c-061566c76dd0" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_01a17a28-8b29-7dc4-ae88-33b9537ae791" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_SolicitingMaterial_01a17a28-8b29-7dc4-ae88-33b9537ae791" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_01a17a28-8b29-79bc-b5ee-d3d8f4e96cee" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_PreCommencementTenderOffer_01a17a28-8b29-79bc-b5ee-d3d8f4e96cee" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_01a17a28-8b29-79d1-9c91-bd7f2e7f5089" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_01a17a28-8b29-79d1-9c91-bd7f2e7f5089" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_01a17a28-8b29-73f9-9c9a-97e132cac45f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_Security12bTitle_01a17a28-8b29-73f9-9c9a-97e132cac45f" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_01a17a28-8b29-7398-85be-d5883e96d2f2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_TradingSymbol_01a17a28-8b29-7398-85be-d5883e96d2f2" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_01a17a28-8b29-7586-ad52-945f437923a7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_SecurityExchangeName_01a17a28-8b29-7586-ad52-945f437923a7" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_01a17a28-8b29-70b6-8f3f-cee974245fbc" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_EntityEmergingGrowthCompany_01a17a28-8b29-70b6-8f3f-cee974245fbc" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_01a17a28-8b29-7e35-b368-a002fcd42943" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_EntityCentralIndexKey_01a17a28-8b29-7e35-b368-a002fcd42943" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_01a17a28-8b29-7fe4-8066-d2f4d3e22fd6" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_01a17a28-8b29-7654-9d77-7863ad8a9783" xlink:to="loc_dei_AmendmentFlag_01a17a28-8b29-7fe4-8066-d2f4d3e22fd6" xlink:type="arc" order="21"/>
  </link:definitionLink>
</link:linkbase>
