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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2021 Workiva-->
<!--r:c86965e0-1861-4226-acd0-ee78daa4dfe8,g:6ec40266-90c9-4ef8-91e1-b160833ec334-->
<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" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.glpropinc.com/role/Cover" xlink:type="simple" xlink:href="glpi-20201231.xsd#Cover"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/Cover" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="glpi-20201231.xsd#ConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_ebfbeee7-609b-45fe-918c-7b5cbc838b7b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_91a9e53d-1e4f-4d94-b9b4-f4c5babbfa99" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_ebfbeee7-609b-45fe-918c-7b5cbc838b7b" xlink:to="loc_us-gaap_CommonStockValue_91a9e53d-1e4f-4d94-b9b4-f4c5babbfa99" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_2b43cad5-c60a-4915-beac-d36b61a10aab" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_ebfbeee7-609b-45fe-918c-7b5cbc838b7b" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_2b43cad5-c60a-4915-beac-d36b61a10aab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_2c465e7d-a958-4349-acfc-425d18b3f851" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_ebfbeee7-609b-45fe-918c-7b5cbc838b7b" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_2c465e7d-a958-4349-acfc-425d18b3f851" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_1cf31791-0652-4f36-a54f-26e4ab6bf3fa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_ebfbeee7-609b-45fe-918c-7b5cbc838b7b" xlink:to="loc_us-gaap_PreferredStockValue_1cf31791-0652-4f36-a54f-26e4ab6bf3fa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_24d6183c-fef8-4597-815e-a5d68fa2bf49" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_1b614118-e641-4ffb-9ae0-a6bbaabbb181" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_24d6183c-fef8-4597-815e-a5d68fa2bf49" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_1b614118-e641-4ffb-9ae0-a6bbaabbb181" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilities_f1851585-9751-424d-8e55-e09aa7eef40a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_24d6183c-fef8-4597-815e-a5d68fa2bf49" xlink:to="loc_us-gaap_OtherLiabilities_f1851585-9751-424d-8e55-e09aa7eef40a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrentAndNoncurrent_52c1fa86-487d-4780-8229-afef16eaf8c4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestPayableCurrentAndNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_24d6183c-fef8-4597-815e-a5d68fa2bf49" xlink:to="loc_us-gaap_InterestPayableCurrentAndNoncurrent_52c1fa86-487d-4780-8229-afef16eaf8c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_2958df59-c88c-419d-b27b-0ddeabffc575" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesCurrentAndNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_24d6183c-fef8-4597-815e-a5d68fa2bf49" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_2958df59-c88c-419d-b27b-0ddeabffc575" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrentAndNoncurrent_68e3c0be-5c44-41ad-bb4d-62f4606fbe2a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableCurrentAndNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_24d6183c-fef8-4597-815e-a5d68fa2bf49" xlink:to="loc_us-gaap_AccountsPayableCurrentAndNoncurrent_68e3c0be-5c44-41ad-bb4d-62f4606fbe2a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_94f8cc79-6377-4370-832c-71972cc72957" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_24d6183c-fef8-4597-815e-a5d68fa2bf49" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_94f8cc79-6377-4370-832c-71972cc72957" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredRevenueLeasesNet_a4cfd6b1-886c-4127-8510-b76a22809aec" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredRevenueLeasesNet"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_24d6183c-fef8-4597-815e-a5d68fa2bf49" xlink:to="loc_us-gaap_DeferredRevenueLeasesNet_a4cfd6b1-886c-4127-8510-b76a22809aec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_ceee3115-c256-4158-8ce2-07afcceb25ee" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_24d6183c-fef8-4597-815e-a5d68fa2bf49" xlink:to="loc_us-gaap_OperatingLeaseLiability_ceee3115-c256-4158-8ce2-07afcceb25ee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrentAndNoncurrent_c8f8355e-1fbf-4d3b-a645-5429ce851293" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrentAndNoncurrent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_24d6183c-fef8-4597-815e-a5d68fa2bf49" xlink:to="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrentAndNoncurrent_c8f8355e-1fbf-4d3b-a645-5429ce851293" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent_602b23b0-adea-4ec1-9fbb-de1852a9f00c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_24d6183c-fef8-4597-815e-a5d68fa2bf49" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent_602b23b0-adea-4ec1-9fbb-de1852a9f00c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_95cf96d6-5880-463e-9c8c-9ed84a30fe55" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:to="loc_us-gaap_OtherAssets_95cf96d6-5880-463e-9c8c-9ed84a30fe55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Land_f942f2b7-da52-400f-a38f-506e3910937d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Land"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:to="loc_us-gaap_Land_f942f2b7-da52-400f-a38f-506e3910937d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableNet_a561e14f-d786-4393-852f-bba18c16b55a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesReceivableNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:to="loc_us-gaap_NotesReceivableNet_a561e14f-d786-4393-852f-bba18c16b55a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrentAndNoncurrent_422babaf-651b-42f0-bf9f-6fb7e57647d4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrepaidExpenseCurrentAndNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:to="loc_us-gaap_PrepaidExpenseCurrentAndNoncurrent_422babaf-651b-42f0-bf9f-6fb7e57647d4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_7f7f6e4e-b60b-4cae-8e3f-6c77155c30cf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_7f7f6e4e-b60b-4cae-8e3f-6c77155c30cf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_9b1bf087-4df7-4336-9432-74e7093ccf41" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_9b1bf087-4df7-4336-9432-74e7093ccf41" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_a448b704-551f-4129-a430-74a127d5ea0c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_a448b704-551f-4129-a430-74a127d5ea0c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_dee6249a-24e7-4164-a7e2-8db22299bc6c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_dee6249a-24e7-4164-a7e2-8db22299bc6c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure_05d3f506-ad77-4ccc-a343-9e5a309a1a32" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:to="loc_us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure_05d3f506-ad77-4ccc-a343-9e5a309a1a32" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyNet_90873b50-4a14-4ddc-92e9-932e3a41400e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RealEstateInvestmentPropertyNet"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:to="loc_us-gaap_RealEstateInvestmentPropertyNet_90873b50-4a14-4ddc-92e9-932e3a41400e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_60883a26-c7ff-4c4d-a652-3c8b89e6f6eb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_60883a26-c7ff-4c4d-a652-3c8b89e6f6eb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_43519600-f554-4632-b2b8-c4565f4aa65f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_80c688d2-f99b-48cd-b2de-20b7d4c4f212" xlink:to="loc_us-gaap_Goodwill_43519600-f554-4632-b2b8-c4565f4aa65f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_f0f5eb29-4618-46f9-8b0b-efafd21935fd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_66b93cc1-5c03-4e9c-9c97-c5da5267da0a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_f0f5eb29-4618-46f9-8b0b-efafd21935fd" xlink:to="loc_us-gaap_Liabilities_66b93cc1-5c03-4e9c-9c97-c5da5267da0a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_5efad9b1-7717-4ff5-8cec-d06d32296ead" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_f0f5eb29-4618-46f9-8b0b-efafd21935fd" xlink:to="loc_us-gaap_StockholdersEquity_5efad9b1-7717-4ff5-8cec-d06d32296ead" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_c4a09f54-8645-4f00-a057-7ea6349e807e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_f0f5eb29-4618-46f9-8b0b-efafd21935fd" xlink:to="loc_us-gaap_CommitmentsAndContingencies_c4a09f54-8645-4f00-a057-7ea6349e807e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="simple" xlink:href="glpi-20201231.xsd#ConsolidatedBalanceSheetsParenthetical"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ConsolidatedBalanceSheetsParenthetical" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ConsolidatedStatementsofIncome" xlink:type="simple" xlink:href="glpi-20201231.xsd#ConsolidatedStatementsofIncome"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ConsolidatedStatementsofIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_d27dd7f9-c5fb-4ca0-8480-80fbf627620b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_8a385136-f7ea-43f2-870e-9ba7b82439f0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_d27dd7f9-c5fb-4ca0-8480-80fbf627620b" xlink:to="loc_us-gaap_Revenues_8a385136-f7ea-43f2-870e-9ba7b82439f0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_9f47f6da-6e88-4441-8a0c-dc44362b2dc7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_d27dd7f9-c5fb-4ca0-8480-80fbf627620b" xlink:to="loc_us-gaap_OperatingExpenses_9f47f6da-6e88-4441-8a0c-dc44362b2dc7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_0540bd3c-9691-4b1f-84d6-c5bd934f0b80" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_aa16b4a8-7c4b-4d9a-9a5e-2857c80862da" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_0540bd3c-9691-4b1f-84d6-c5bd934f0b80" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_aa16b4a8-7c4b-4d9a-9a5e-2857c80862da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_613fd8cd-003a-452a-8df3-be1eed1b2d42" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_0540bd3c-9691-4b1f-84d6-c5bd934f0b80" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_613fd8cd-003a-452a-8df3-be1eed1b2d42" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_e43b363d-d7b8-4713-a38b-4433d0312982" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_LandRightsandGroundLeaseExpense_7128f94b-6832-4865-bf2f-4604a79884c3" xlink:href="glpi-20201231.xsd#glpi_LandRightsandGroundLeaseExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_e43b363d-d7b8-4713-a38b-4433d0312982" xlink:to="loc_glpi_LandRightsandGroundLeaseExpense_7128f94b-6832-4865-bf2f-4604a79884c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets1_f26fd7f2-41f1-4030-8e2e-d987f7ac0317" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets1"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_e43b363d-d7b8-4713-a38b-4433d0312982" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets1_f26fd7f2-41f1-4030-8e2e-d987f7ac0317" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateTaxExpense_b26d2d05-2878-447b-8bee-13f7a4d45ce0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RealEstateTaxExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_e43b363d-d7b8-4713-a38b-4433d0312982" xlink:to="loc_us-gaap_RealEstateTaxExpense_b26d2d05-2878-447b-8bee-13f7a4d45ce0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_f7cfe8a7-3301-444d-b310-86a964cf59a4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_e43b363d-d7b8-4713-a38b-4433d0312982" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_f7cfe8a7-3301-444d-b310-86a964cf59a4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_8716a8a3-ed02-44b6-9442-4ba9ba10fffe" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Depreciation"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_e43b363d-d7b8-4713-a38b-4433d0312982" xlink:to="loc_us-gaap_Depreciation_8716a8a3-ed02-44b6-9442-4ba9ba10fffe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_Loanimpairmentcharges_820c01e8-6a10-4e8c-b292-bb55f51da9ad" xlink:href="glpi-20201231.xsd#glpi_Loanimpairmentcharges"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_e43b363d-d7b8-4713-a38b-4433d0312982" xlink:to="loc_glpi_Loanimpairmentcharges_820c01e8-6a10-4e8c-b292-bb55f51da9ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_b749b216-8f40-4bac-96b8-865eb102f68e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_e43b363d-d7b8-4713-a38b-4433d0312982" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_b749b216-8f40-4bac-96b8-865eb102f68e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_f72b9611-42a5-4bcd-8381-da77af118dd4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_e43b363d-d7b8-4713-a38b-4433d0312982" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_f72b9611-42a5-4bcd-8381-da77af118dd4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_4fde63f9-5494-4749-80d3-35093bfaba30" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_c92fbcfb-de85-4a8c-8443-44f9af669974" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_4fde63f9-5494-4749-80d3-35093bfaba30" xlink:to="loc_us-gaap_OperatingIncomeLoss_c92fbcfb-de85-4a8c-8443-44f9af669974" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_70c3bf17-c540-442e-a340-05481f07b571" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_4fde63f9-5494-4749-80d3-35093bfaba30" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_70c3bf17-c540-442e-a340-05481f07b571" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_6bf32c3f-c5c9-4c77-bcda-f371a57464a9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_08468555-0ce0-42a7-9c54-1c03b193afaa" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_6bf32c3f-c5c9-4c77-bcda-f371a57464a9" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_08468555-0ce0-42a7-9c54-1c03b193afaa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncome_e99d6558-8ef9-4f8d-a05a-c664d6d7c4ca" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNonoperatingIncome"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_6bf32c3f-c5c9-4c77-bcda-f371a57464a9" xlink:to="loc_us-gaap_OtherNonoperatingIncome_e99d6558-8ef9-4f8d-a05a-c664d6d7c4ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_3b276a1b-72b7-4feb-91af-93ec06979627" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpense"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_6bf32c3f-c5c9-4c77-bcda-f371a57464a9" xlink:to="loc_us-gaap_InterestExpense_3b276a1b-72b7-4feb-91af-93ec06979627" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_bbdc0c0b-058b-42db-9f19-d22ab5971430" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesTypeLeaseRevenue_be50d9a8-2c5a-4523-a6fa-3d0dfa2c0746" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SalesTypeLeaseRevenue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_bbdc0c0b-058b-42db-9f19-d22ab5971430" xlink:to="loc_us-gaap_SalesTypeLeaseRevenue_be50d9a8-2c5a-4523-a6fa-3d0dfa2c0746" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesRealEstateTaxesPaidByTenants_83945fa4-e27b-4871-b1f0-c001b80b6078" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesRealEstateTaxesPaidByTenants"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_bbdc0c0b-058b-42db-9f19-d22ab5971430" xlink:to="loc_glpi_OperatingLeasesRealEstateTaxesPaidByTenants_83945fa4-e27b-4871-b1f0-c001b80b6078" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLeaseIncome_40130220-9388-4266-8ad4-a7d1a16df34a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLeaseIncome"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_bbdc0c0b-058b-42db-9f19-d22ab5971430" xlink:to="loc_us-gaap_OperatingLeaseLeaseIncome_40130220-9388-4266-8ad4-a7d1a16df34a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndFeeIncomeLoansCommercialRealEstate_195e11e4-1890-4c78-a23e-e75d0110ff60" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestAndFeeIncomeLoansCommercialRealEstate"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_bbdc0c0b-058b-42db-9f19-d22ab5971430" xlink:to="loc_us-gaap_InterestAndFeeIncomeLoansCommercialRealEstate_195e11e4-1890-4c78-a23e-e75d0110ff60" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" xlink:type="simple" xlink:href="glpi-20201231.xsd#ConsolidatedStatementsofChangesinShareholdersEquity"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ConsolidatedStatementsofChangesinShareholdersEquity" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ConsolidatedStatementsofChangesinShareholdersEquityDeficitParenthetical" xlink:type="simple" xlink:href="glpi-20201231.xsd#ConsolidatedStatementsofChangesinShareholdersEquityDeficitParenthetical"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ConsolidatedStatementsofChangesinShareholdersEquityDeficitParenthetical" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="glpi-20201231.xsd#ConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_glpi_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectWithinAssetsHeldForSale_178eb286-90aa-4535-ae68-448b647b62f7" xlink:href="glpi-20201231.xsd#glpi_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectWithinAssetsHeldForSale"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_bf2f8130-ce75-41b3-817c-a54459e07917" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectWithinAssetsHeldForSale_178eb286-90aa-4535-ae68-448b647b62f7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_bf2f8130-ce75-41b3-817c-a54459e07917" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_dbb5beb8-3c99-4782-8ea2-549b9759b75f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectWithinAssetsHeldForSale_178eb286-90aa-4535-ae68-448b647b62f7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_dbb5beb8-3c99-4782-8ea2-549b9759b75f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_29d7606a-da18-4c3d-9d6f-1e61a7323333" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectWithinAssetsHeldForSale_178eb286-90aa-4535-ae68-448b647b62f7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_29d7606a-da18-4c3d-9d6f-1e61a7323333" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_310d3213-85db-47f1-8b97-0d22b92f0243" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_c7d29590-ed62-40e8-bb9e-cff970faa828" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfFinancingCosts"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_310d3213-85db-47f1-8b97-0d22b92f0243" xlink:to="loc_us-gaap_PaymentsOfFinancingCosts_c7d29590-ed62-40e8-bb9e-cff970faa828" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividends_ccc879a3-ab3b-4263-bec2-9453053da04e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDividends"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_310d3213-85db-47f1-8b97-0d22b92f0243" xlink:to="loc_us-gaap_PaymentsOfDividends_ccc879a3-ab3b-4263-bec2-9453053da04e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_ATMProgramofferingcosts_8b9f39a8-4724-4274-9355-51293529eb52" xlink:href="glpi-20201231.xsd#glpi_ATMProgramofferingcosts"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_310d3213-85db-47f1-8b97-0d22b92f0243" xlink:to="loc_glpi_ATMProgramofferingcosts_8b9f39a8-4724-4274-9355-51293529eb52" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_cd3445e0-d908-49c0-9895-dc888ba7ac67" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_310d3213-85db-47f1-8b97-0d22b92f0243" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_cd3445e0-d908-49c0-9895-dc888ba7ac67" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_80e1938a-ab46-4085-8c1f-e23535fc1bdc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_310d3213-85db-47f1-8b97-0d22b92f0243" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_80e1938a-ab46-4085-8c1f-e23535fc1bdc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_PaymentsofPremiumandRelatedCostsonTenderofSeniorUnsecuredNotes_83fa8ca2-9fe3-46fc-80ef-6cf9a31d2ab2" xlink:href="glpi-20201231.xsd#glpi_PaymentsofPremiumandRelatedCostsonTenderofSeniorUnsecuredNotes"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_310d3213-85db-47f1-8b97-0d22b92f0243" xlink:to="loc_glpi_PaymentsofPremiumandRelatedCostsonTenderofSeniorUnsecuredNotes_83fa8ca2-9fe3-46fc-80ef-6cf9a31d2ab2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_ProceedsRepaymentsRelatedtoTaxWithholdingOnRestrictedStockAwardVestingsNetofProceedsfromExerciseofOptions_f432df51-e30b-4b1e-ab45-e8a4c6b1a3f3" xlink:href="glpi-20201231.xsd#glpi_ProceedsRepaymentsRelatedtoTaxWithholdingOnRestrictedStockAwardVestingsNetofProceedsfromExerciseofOptions"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_310d3213-85db-47f1-8b97-0d22b92f0243" xlink:to="loc_glpi_ProceedsRepaymentsRelatedtoTaxWithholdingOnRestrictedStockAwardVestingsNetofProceedsfromExerciseofOptions_f432df51-e30b-4b1e-ab45-e8a4c6b1a3f3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_848dbaf3-78f8-413c-8194-68df0eb6616f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectWithinAssetsHeldForSale_b424c264-05f3-4053-8232-6277c285a831" xlink:href="glpi-20201231.xsd#glpi_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectWithinAssetsHeldForSale"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_848dbaf3-78f8-413c-8194-68df0eb6616f" xlink:to="loc_glpi_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectWithinAssetsHeldForSale_b424c264-05f3-4053-8232-6277c285a831" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseAssetsHeldForSale_7fc50380-77a8-434c-8938-e6406d8e491b" xlink:href="glpi-20201231.xsd#glpi_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseAssetsHeldForSale"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_848dbaf3-78f8-413c-8194-68df0eb6616f" xlink:to="loc_glpi_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseAssetsHeldForSale_7fc50380-77a8-434c-8938-e6406d8e491b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_LoanAndGoodwillImpairment_3a8a57b8-08ac-4681-91e8-82541f7eec5e" xlink:href="glpi-20201231.xsd#glpi_LoanAndGoodwillImpairment"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_glpi_LoanAndGoodwillImpairment_3a8a57b8-08ac-4681-91e8-82541f7eec5e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_8bcfd58c-718b-43e9-9eee-9c88402f7827" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_8bcfd58c-718b-43e9-9eee-9c88402f7827" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_25d8410c-08cd-4af5-96e6-38b033b7853b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_25d8410c-08cd-4af5-96e6-38b033b7853b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_33c087e0-4690-4518-b009-943c04abb825" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_33c087e0-4690-4518-b009-943c04abb825" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_15000fed-ccf1-49ce-9dcd-07992d97ff58" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_15000fed-ccf1-49ce-9dcd-07992d97ff58" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_2382720d-1826-449d-b85f-3246e4c2a29e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_2382720d-1826-449d-b85f-3246e4c2a29e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_d749a763-48e4-43d3-b5f9-fd3953bbb9b3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_ShareBasedCompensation_d749a763-48e4-43d3-b5f9-fd3953bbb9b3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_99f909e1-72a4-43b3-9aad-b6459dc4e281" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_NetIncomeLoss_99f909e1-72a4-43b3-9aad-b6459dc4e281" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_159a8f74-0d28-429e-bac7-eb9b59938c43" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_159a8f74-0d28-429e-bac7-eb9b59938c43" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_fb9717c3-91ad-4049-9c1f-d04fd6b09dc1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_fb9717c3-91ad-4049-9c1f-d04fd6b09dc1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StraightLineRentAdjustments_5db8a59d-dfd9-4ec1-97b7-dd0f1a2cd950" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StraightLineRentAdjustments"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_StraightLineRentAdjustments_5db8a59d-dfd9-4ec1-97b7-dd0f1a2cd950" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_adab5a0e-aed8-4ae8-ac47-e7f05f066b70" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInInterestPayableNet"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_IncreaseDecreaseInInterestPayableNet_adab5a0e-aed8-4ae8-ac47-e7f05f066b70" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredRevenueRevenueRecognized1_6274d981-5d5b-4ea4-bd42-b35901575feb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredRevenueRevenueRecognized1"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_DeferredRevenueRevenueRecognized1_6274d981-5d5b-4ea4-bd42-b35901575feb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable_92978e18-72b4-4f01-a36f-16af4a8bcc39" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_IncreaseDecreaseInPropertyAndOtherTaxesPayable_92978e18-72b4-4f01-a36f-16af4a8bcc39" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_334f8b1a-e365-4448-932d-0abab5588f5f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="15" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_1178fe12-63ae-43fe-8633-05580f2d21cd" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_334f8b1a-e365-4448-932d-0abab5588f5f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_1414bfd8-f7b2-4fcf-b7ee-6ba2c378351a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_75beb8d6-81a0-4209-8da2-1d970a8f4df8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_1414bfd8-f7b2-4fcf-b7ee-6ba2c378351a" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_75beb8d6-81a0-4209-8da2-1d970a8f4df8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForCapitalImprovements_549d6955-2599-479a-8651-dd39fd27cf66" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForCapitalImprovements"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_1414bfd8-f7b2-4fcf-b7ee-6ba2c378351a" xlink:to="loc_us-gaap_PaymentsForCapitalImprovements_549d6955-2599-479a-8651-dd39fd27cf66" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_da2a4226-c33c-4f1d-9467-a4c3eed9ea2b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_1414bfd8-f7b2-4fcf-b7ee-6ba2c378351a" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_da2a4226-c33c-4f1d-9467-a4c3eed9ea2b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromCollectionOfLeaseReceivables_fe88dcf5-25bd-4de5-880d-ab793eae406e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromCollectionOfLeaseReceivables"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_1414bfd8-f7b2-4fcf-b7ee-6ba2c378351a" xlink:to="loc_us-gaap_ProceedsFromCollectionOfLeaseReceivables_fe88dcf5-25bd-4de5-880d-ab793eae406e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireOtherRealEstate_44a1180a-f423-4daf-9f7e-e115f185300d" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireOtherRealEstate"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_1414bfd8-f7b2-4fcf-b7ee-6ba2c378351a" xlink:to="loc_us-gaap_PaymentsToAcquireOtherRealEstate_44a1180a-f423-4daf-9f7e-e115f185300d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireFinanceReceivables_fa3ea673-1bb7-4b9d-bb2d-b34c4938340b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireFinanceReceivables"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_1414bfd8-f7b2-4fcf-b7ee-6ba2c378351a" xlink:to="loc_us-gaap_PaymentsToAcquireFinanceReceivables_fa3ea673-1bb7-4b9d-bb2d-b34c4938340b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/BusinessandBasisofPresentation" xlink:type="simple" xlink:href="glpi-20201231.xsd#BusinessandBasisofPresentation"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/BusinessandBasisofPresentation" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/BusinessandBasisofPresentationNarrativeDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#BusinessandBasisofPresentationNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/BusinessandBasisofPresentationNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SummaryofSignificantAccountingPolicies" xlink:type="simple" xlink:href="glpi-20201231.xsd#SummaryofSignificantAccountingPolicies"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SummaryofSignificantAccountingPolicies" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesPolicies" xlink:type="simple" xlink:href="glpi-20201231.xsd#SummaryofSignificantAccountingPoliciesPolicies"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesPolicies" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#SummaryofSignificantAccountingPoliciesTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesRealEstateInvestmentsDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#SummaryofSignificantAccountingPoliciesRealEstateInvestmentsDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesRealEstateInvestmentsDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesPropertyandEquipmentUsedinOperationsDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#SummaryofSignificantAccountingPoliciesPropertyandEquipmentUsedinOperationsDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesPropertyandEquipmentUsedinOperationsDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesCashandCashEquivalentsDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#SummaryofSignificantAccountingPoliciesCashandCashEquivalentsDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesCashandCashEquivalentsDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesIncomeTaxesDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#SummaryofSignificantAccountingPoliciesIncomeTaxesDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesIncomeTaxesDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesSegmentInformationDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#SummaryofSignificantAccountingPoliciesSegmentInformationDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesSegmentInformationDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesConcentrationofCreditRiskDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#SummaryofSignificantAccountingPoliciesConcentrationofCreditRiskDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SummaryofSignificantAccountingPoliciesConcentrationofCreditRiskDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/NewAccountingPronouncements" xlink:type="simple" xlink:href="glpi-20201231.xsd#NewAccountingPronouncements"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/NewAccountingPronouncements" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/RealEstateInvestments" xlink:type="simple" xlink:href="glpi-20201231.xsd#RealEstateInvestments"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/RealEstateInvestments" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/RealEstateInvestmentsTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#RealEstateInvestmentsTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/RealEstateInvestmentsTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/RealEstateInvestmentsDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#RealEstateInvestmentsDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/RealEstateInvestmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyNet_129e61c7-68c3-46fc-9c3d-15b91b252d6f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RealEstateInvestmentPropertyNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyAtCost_a788077f-8382-46a7-8cce-e677d0dfdb7e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RealEstateInvestmentPropertyAtCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyNet_129e61c7-68c3-46fc-9c3d-15b91b252d6f" xlink:to="loc_us-gaap_RealEstateInvestmentPropertyAtCost_a788077f-8382-46a7-8cce-e677d0dfdb7e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_e42f0b72-ba2c-4977-bc6e-cbb2a4f77c0e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyNet_129e61c7-68c3-46fc-9c3d-15b91b252d6f" xlink:to="loc_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_e42f0b72-ba2c-4977-bc6e-cbb2a4f77c0e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/PropertyandEquipmentUsedinOperations" xlink:type="simple" xlink:href="glpi-20201231.xsd#PropertyandEquipmentUsedinOperations"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/PropertyandEquipmentUsedinOperations" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/PropertyandEquipmentUsedinOperationsTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#PropertyandEquipmentUsedinOperationsTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/PropertyandEquipmentUsedinOperationsTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/PropertyandEquipmentUsedinOperationsScheduleofPropertyandEquipmentDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#PropertyandEquipmentUsedinOperationsScheduleofPropertyandEquipmentDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/PropertyandEquipmentUsedinOperationsScheduleofPropertyandEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_ecec421e-7071-488b-a8b8-dc617b84df17" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_624b0a54-e4b5-4a5f-acee-f38dadc88c5c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_ecec421e-7071-488b-a8b8-dc617b84df17" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_624b0a54-e4b5-4a5f-acee-f38dadc88c5c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_26989922-787a-47e6-8646-95c2b8324fc3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_ecec421e-7071-488b-a8b8-dc617b84df17" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_26989922-787a-47e6-8646-95c2b8324fc3" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/AssetsHeldforSale" xlink:type="simple" xlink:href="glpi-20201231.xsd#AssetsHeldforSale"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/AssetsHeldforSale" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/AssetsHeldforSaleTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#AssetsHeldforSaleTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/AssetsHeldforSaleTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/AssetsHeldforSaleDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#AssetsHeldforSaleDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/AssetsHeldforSaleDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/AssetsHeldforSaleScheduleofAssetsHeldforSaleDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#AssetsHeldforSaleScheduleofAssetsHeldforSaleDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/AssetsHeldforSaleScheduleofAssetsHeldforSaleDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_cb764975-327c-4fdc-8a5a-c1712d2f060f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities_2029920b-b867-4ab2-b015-b26148cb62f1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_cb764975-327c-4fdc-8a5a-c1712d2f060f" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities_2029920b-b867-4ab2-b015-b26148cb62f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable_0208cf8b-9d77-401b-8f95-f8c2c1f18c3b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_cb764975-327c-4fdc-8a5a-c1712d2f060f" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable_0208cf8b-9d77-401b-8f95-f8c2c1f18c3b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities_1aaca41a-45ef-4ee8-a188-4614680e3e67" xlink:href="glpi-20201231.xsd#glpi_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_cb764975-327c-4fdc-8a5a-c1712d2f060f" xlink:to="loc_glpi_DisposalGroupIncludingDiscontinuedOperationLeaseLiabilities_1aaca41a-45ef-4ee8-a188-4614680e3e67" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_DisposalGroupIncludingDiscontinuedOperationGamingPropertyAndOtherTaxes_e5cff5d7-42b3-43fb-b6e6-fca7118acc87" xlink:href="glpi-20201231.xsd#glpi_DisposalGroupIncludingDiscontinuedOperationGamingPropertyAndOtherTaxes"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_cb764975-327c-4fdc-8a5a-c1712d2f060f" xlink:to="loc_glpi_DisposalGroupIncludingDiscontinuedOperationGamingPropertyAndOtherTaxes_e5cff5d7-42b3-43fb-b6e6-fca7118acc87" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_e1a80a1e-52f8-4706-bcfb-67c7bb8ff312" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_cb764975-327c-4fdc-8a5a-c1712d2f060f" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherLiabilities_e1a80a1e-52f8-4706-bcfb-67c7bb8ff312" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_DisposalGroupIncludingDiscontinuedOperationSalariesAndWages_da92ed63-8a52-4a60-a9dc-00c5a261ebee" xlink:href="glpi-20201231.xsd#glpi_DisposalGroupIncludingDiscontinuedOperationSalariesAndWages"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation_cb764975-327c-4fdc-8a5a-c1712d2f060f" xlink:to="loc_glpi_DisposalGroupIncludingDiscontinuedOperationSalariesAndWages_da92ed63-8a52-4a60-a9dc-00c5a261ebee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_2aa94534-bc29-4383-b425-7ec2f05166b1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwill1_17019a9f-ac35-4fd1-9251-b2bf901d909b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwill1"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_2aa94534-bc29-4383-b425-7ec2f05166b1" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGoodwill1_17019a9f-ac35-4fd1-9251-b2bf901d909b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_9bc6edf2-23b5-4b22-ba33-1c253394df24" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_2aa94534-bc29-4383-b425-7ec2f05166b1" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents_9bc6edf2-23b5-4b22-ba33-1c253394df24" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_df6f294d-fbbc-4927-b176-a855f6034345" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_2aa94534-bc29-4383-b425-7ec2f05166b1" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment_df6f294d-fbbc-4927-b176-a855f6034345" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets_d3e182d1-ea63-43d7-a512-6aa8470c0a97" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_2aa94534-bc29-4383-b425-7ec2f05166b1" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets_d3e182d1-ea63-43d7-a512-6aa8470c0a97" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_DisposalGroupIncludingDiscontinuedOperationPrepaidExpenses_56839b4d-7d64-4a4c-9537-60f997cce382" xlink:href="glpi-20201231.xsd#glpi_DisposalGroupIncludingDiscontinuedOperationPrepaidExpenses"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_2aa94534-bc29-4383-b425-7ec2f05166b1" xlink:to="loc_glpi_DisposalGroupIncludingDiscontinuedOperationPrepaidExpenses_56839b4d-7d64-4a4c-9537-60f997cce382" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_DisposalGroupIncludingDiscontinuedOperationRightOfUseAsset_546936eb-a636-4ffd-b284-53b0e07a4c01" xlink:href="glpi-20201231.xsd#glpi_DisposalGroupIncludingDiscontinuedOperationRightOfUseAsset"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_2aa94534-bc29-4383-b425-7ec2f05166b1" xlink:to="loc_glpi_DisposalGroupIncludingDiscontinuedOperationRightOfUseAsset_546936eb-a636-4ffd-b284-53b0e07a4c01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets_0611e589-4d6d-4250-a6e0-2c3be0d571d0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation_2aa94534-bc29-4383-b425-7ec2f05166b1" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationIntangibleAssets_0611e589-4d6d-4250-a6e0-2c3be0d571d0" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/Acquisitions" xlink:type="simple" xlink:href="glpi-20201231.xsd#Acquisitions"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/Acquisitions" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/AcquisitionsTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#AcquisitionsTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/AcquisitionsTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/AcquisitionsNarrativeDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#AcquisitionsNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/AcquisitionsNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/AcquisitionsPurchasePriceAllocationComponentsDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#AcquisitionsPurchasePriceAllocationComponentsDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/AcquisitionsPurchasePriceAllocationComponentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_glpi_Assetacquisitionsrecognizedidentifiableassetsacquiredandliabilitiesassumed_8751477d-198a-485c-a1cc-f1c317d88d8f" xlink:href="glpi-20201231.xsd#glpi_Assetacquisitionsrecognizedidentifiableassetsacquiredandliabilitiesassumed"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_Assetacquisitionsrecognizedidentifiableassetsacquiredandliabilitiesassumedrealestateinvestmentsnet_3b7f7ce9-2839-4479-8160-1ac4587d0179" xlink:href="glpi-20201231.xsd#glpi_Assetacquisitionsrecognizedidentifiableassetsacquiredandliabilitiesassumedrealestateinvestmentsnet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_Assetacquisitionsrecognizedidentifiableassetsacquiredandliabilitiesassumed_8751477d-198a-485c-a1cc-f1c317d88d8f" xlink:to="loc_glpi_Assetacquisitionsrecognizedidentifiableassetsacquiredandliabilitiesassumedrealestateinvestmentsnet_3b7f7ce9-2839-4479-8160-1ac4587d0179" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_Assetacquisitionsrecognizedidentifiableassetsacquiredandliabilitiesassumedlandrightsnet_f3442f11-00ad-46a4-a662-4e903aac57e9" xlink:href="glpi-20201231.xsd#glpi_Assetacquisitionsrecognizedidentifiableassetsacquiredandliabilitiesassumedlandrightsnet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_Assetacquisitionsrecognizedidentifiableassetsacquiredandliabilitiesassumed_8751477d-198a-485c-a1cc-f1c317d88d8f" xlink:to="loc_glpi_Assetacquisitionsrecognizedidentifiableassetsacquiredandliabilitiesassumedlandrightsnet_f3442f11-00ad-46a4-a662-4e903aac57e9" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilities" xlink:type="simple" xlink:href="glpi-20201231.xsd#LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilities"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilities" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesLeaseAssetsDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesLeaseAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesLeaseAssetsDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesLandRightsDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesLandRightsDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesLandRightsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GroundLeasesNet_218e9240-a034-4dfe-9f78-4faf74d9a3a4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GroundLeasesNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_6ee03e77-5d75-4524-81ef-bca98262f094" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GroundLeasesNet_218e9240-a034-4dfe-9f78-4faf74d9a3a4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_6ee03e77-5d75-4524-81ef-bca98262f094" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_b08dbaf7-43d7-46a1-b0a3-0e9b28a0138c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GroundLeasesNet_218e9240-a034-4dfe-9f78-4faf74d9a3a4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_b08dbaf7-43d7-46a1-b0a3-0e9b28a0138c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_a84783c5-4e9a-4533-9fce-6488c0ea0011" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GroundLeasesNet_218e9240-a034-4dfe-9f78-4faf74d9a3a4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_a84783c5-4e9a-4533-9fce-6488c0ea0011" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_6d541c64-1cdf-4b9b-b2b5-541e8ccd019c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GroundLeasesNet_218e9240-a034-4dfe-9f78-4faf74d9a3a4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_6d541c64-1cdf-4b9b-b2b5-541e8ccd019c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_4683aaf0-b85a-4746-b723-2d78358b33e2" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GroundLeasesNet_218e9240-a034-4dfe-9f78-4faf74d9a3a4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_4683aaf0-b85a-4746-b723-2d78358b33e2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_ceb9db34-8629-45da-838d-19ad5695ed48" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GroundLeasesNet_218e9240-a034-4dfe-9f78-4faf74d9a3a4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_ceb9db34-8629-45da-838d-19ad5695ed48" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesLandRightsDetails_1" xlink:type="simple" xlink:href="glpi-20201231.xsd#LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesLandRightsDetails_1"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesLandRightsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GroundLeasesNet_e0cd34a0-4244-4192-89b8-a4e0d3acb569" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GroundLeasesNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GroundLeasesGross_c556f163-6411-4e11-9895-814ccdef1f61" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GroundLeasesGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GroundLeasesNet_e0cd34a0-4244-4192-89b8-a4e0d3acb569" xlink:to="loc_us-gaap_GroundLeasesGross_c556f163-6411-4e11-9895-814ccdef1f61" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GroundLeasesAccumulatedAmortization_b00b56ed-7486-4c43-b562-bc282c77afa8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GroundLeasesAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GroundLeasesNet_e0cd34a0-4244-4192-89b8-a4e0d3acb569" xlink:to="loc_us-gaap_GroundLeasesAccumulatedAmortization_b00b56ed-7486-4c43-b562-bc282c77afa8" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesLeaseMaturityScheduleDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesLeaseMaturityScheduleDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesLeaseMaturityScheduleDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b828ca43-6524-4f5f-ae72-98625ffb983e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_82966a4d-9718-4e67-aa08-a1ae5884edfc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b828ca43-6524-4f5f-ae72-98625ffb983e" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_82966a4d-9718-4e67-aa08-a1ae5884edfc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_a4bba41f-50ca-4501-89e2-aa5836f92be3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b828ca43-6524-4f5f-ae72-98625ffb983e" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_a4bba41f-50ca-4501-89e2-aa5836f92be3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_199223ad-b7b1-448a-8622-6111c915a0da" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b828ca43-6524-4f5f-ae72-98625ffb983e" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_199223ad-b7b1-448a-8622-6111c915a0da" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_5b405b48-71b1-4833-a683-a74fbb1c2a4c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b828ca43-6524-4f5f-ae72-98625ffb983e" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_5b405b48-71b1-4833-a683-a74fbb1c2a4c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_3f88a6c9-9180-4fed-81d3-cbcbb0c28507" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b828ca43-6524-4f5f-ae72-98625ffb983e" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_3f88a6c9-9180-4fed-81d3-cbcbb0c28507" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_4dbaa6ce-8a35-4a9e-a76d-8f784f242bbb" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b828ca43-6524-4f5f-ae72-98625ffb983e" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_4dbaa6ce-8a35-4a9e-a76d-8f784f242bbb" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesComponentsofLeaseExpenseDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesComponentsofLeaseExpenseDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesComponentsofLeaseExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_a9eaba70-5b62-4517-bd05-8a1170b8d700" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_575da225-1650-4bfc-b6c6-256f5836df95" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_a9eaba70-5b62-4517-bd05-8a1170b8d700" xlink:to="loc_us-gaap_OperatingLeaseCost_575da225-1650-4bfc-b6c6-256f5836df95" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_5ff17b19-d48f-41a5-bfe9-c498d120ccbc" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableLeaseCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_a9eaba70-5b62-4517-bd05-8a1170b8d700" xlink:to="loc_us-gaap_VariableLeaseCost_5ff17b19-d48f-41a5-bfe9-c498d120ccbc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermLeaseCost_2e8dc55b-b19e-40d8-9b0a-0b599da27392" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermLeaseCost"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_a9eaba70-5b62-4517-bd05-8a1170b8d700" xlink:to="loc_us-gaap_ShortTermLeaseCost_2e8dc55b-b19e-40d8-9b0a-0b599da27392" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_773f94fb-749f-495b-b16b-250daf1a01e8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_a9eaba70-5b62-4517-bd05-8a1170b8d700" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_773f94fb-749f-495b-b16b-250daf1a01e8" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesSupplementalBalanceSheetInformationDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesSupplementalBalanceSheetInformationDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesSupplementalBalanceSheetInformationDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesSupplementalCashFlowInformationDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesSupplementalCashFlowInformationDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LeaseAssetsandLeaseLiabilitiesLeaseAssetsandLeaseLiabilitiesSupplementalCashFlowInformationDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/Receivables" xlink:type="simple" xlink:href="glpi-20201231.xsd#Receivables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/Receivables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ReceivablesMortgageLoansReceivableDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#ReceivablesMortgageLoansReceivableDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ReceivablesMortgageLoansReceivableDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ReceivablesLoanReceivableDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#ReceivablesLoanReceivableDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ReceivablesLoanReceivableDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/GoodwillandIntangibleAssets" xlink:type="simple" xlink:href="glpi-20201231.xsd#GoodwillandIntangibleAssets"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/GoodwillandIntangibleAssets" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/GoodwillandIntangibleAssetsDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#GoodwillandIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/GoodwillandIntangibleAssetsDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LongtermDebt" xlink:type="simple" xlink:href="glpi-20201231.xsd#LongtermDebt"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LongtermDebt" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LongtermDebtTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#LongtermDebtTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LongtermDebtTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LongtermDebtScheduleofLongTermDebtDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#LongtermDebtScheduleofLongTermDebtDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LongtermDebtScheduleofLongTermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_0ce5e36d-0e6e-47fa-87a0-fca52af3f6d5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_LongTermDebtGrossandLeaseObligations_c66d65f5-b62c-4f6f-94ea-8fee9032f8f2" xlink:href="glpi-20201231.xsd#glpi_LongTermDebtGrossandLeaseObligations"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_0ce5e36d-0e6e-47fa-87a0-fca52af3f6d5" xlink:to="loc_glpi_LongTermDebtGrossandLeaseObligations_c66d65f5-b62c-4f6f-94ea-8fee9032f8f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_eda27c49-67eb-4e40-b252-892ed67843b1" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_0ce5e36d-0e6e-47fa-87a0-fca52af3f6d5" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_eda27c49-67eb-4e40-b252-892ed67843b1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LongtermDebtMaturitiesofLongTermDebtDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#LongtermDebtMaturitiesofLongTermDebtDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LongtermDebtMaturitiesofLongTermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_glpi_LongTermDebtGrossandLeaseObligations_cdb5c4ef-c3fd-446e-957f-bc5387260c6f" xlink:href="glpi-20201231.xsd#glpi_LongTermDebtGrossandLeaseObligations"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths_c45306d4-56ff-4b3d-a7f9-e7f80965ab60" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_LongTermDebtGrossandLeaseObligations_cdb5c4ef-c3fd-446e-957f-bc5387260c6f" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths_c45306d4-56ff-4b3d-a7f9-e7f80965ab60" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo_128c7f16-477b-4b39-a090-836572b4c245" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_LongTermDebtGrossandLeaseObligations_cdb5c4ef-c3fd-446e-957f-bc5387260c6f" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo_128c7f16-477b-4b39-a090-836572b4c245" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree_f638c1e7-5359-4362-aaaa-0e2f1de856d5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_LongTermDebtGrossandLeaseObligations_cdb5c4ef-c3fd-446e-957f-bc5387260c6f" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree_f638c1e7-5359-4362-aaaa-0e2f1de856d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour_807ba373-6c5e-4497-9d71-f431c9862f69" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_LongTermDebtGrossandLeaseObligations_cdb5c4ef-c3fd-446e-957f-bc5387260c6f" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour_807ba373-6c5e-4497-9d71-f431c9862f69" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive_de55021d-de53-4ba2-aa0a-30a60297d826" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_LongTermDebtGrossandLeaseObligations_cdb5c4ef-c3fd-446e-957f-bc5387260c6f" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive_de55021d-de53-4ba2-aa0a-30a60297d826" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive_bb190563-0694-4f3c-b8cb-e4f830923d6b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_LongTermDebtGrossandLeaseObligations_cdb5c4ef-c3fd-446e-957f-bc5387260c6f" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive_bb190563-0694-4f3c-b8cb-e4f830923d6b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LongtermDebtSeniorUnsecuredCreditFacilityNarrativeDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#LongtermDebtSeniorUnsecuredCreditFacilityNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LongtermDebtSeniorUnsecuredCreditFacilityNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/LongtermDebtSeniorUnsecuredNotesNarrativeDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#LongtermDebtSeniorUnsecuredNotesNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/LongtermDebtSeniorUnsecuredNotesNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/FairValueofFinancialAssetsandLiabilitiesFairValueofFinancialAssetsandLiabilities" xlink:type="simple" xlink:href="glpi-20201231.xsd#FairValueofFinancialAssetsandLiabilitiesFairValueofFinancialAssetsandLiabilities"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/FairValueofFinancialAssetsandLiabilitiesFairValueofFinancialAssetsandLiabilities" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/FairValueofFinancialAssetsandLiabilitiesFairValueofFinancialAssetsandLiabilitiesTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#FairValueofFinancialAssetsandLiabilitiesFairValueofFinancialAssetsandLiabilitiesTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/FairValueofFinancialAssetsandLiabilitiesFairValueofFinancialAssetsandLiabilitiesTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/FairValueofFinancialAssetsandLiabilitiesFairValueofFinancialAssetsandLIabilitiesAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#FairValueofFinancialAssetsandLiabilitiesFairValueofFinancialAssetsandLIabilitiesAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/FairValueofFinancialAssetsandLiabilitiesFairValueofFinancialAssetsandLIabilitiesAssetsandLiabilitiesMeasuredatFairValueonaRecurringBasisDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/CommitmentsandContingencies" xlink:type="simple" xlink:href="glpi-20201231.xsd#CommitmentsandContingencies"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/CommitmentsandContingencies" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/CommitmentsandContingenciesEmployeeBenefitPlansDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#CommitmentsandContingenciesEmployeeBenefitPlansDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/CommitmentsandContingenciesEmployeeBenefitPlansDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/CommitmentsandContingenciesLaborAgreementsDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#CommitmentsandContingenciesLaborAgreementsDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/CommitmentsandContingenciesLaborAgreementsDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/RevenueRecognition" xlink:type="simple" xlink:href="glpi-20201231.xsd#RevenueRecognition"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/RevenueRecognition" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/RevenueRecognitionTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#RevenueRecognitionTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/RevenueRecognitionTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/RevenueRecognitionNarrativeDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#RevenueRecognitionNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/RevenueRecognitionNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/RevenueRecognitionRevenueRecognitionRentalIncomeTableDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#RevenueRecognitionRevenueRecognitionRentalIncomeTableDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/RevenueRecognitionRevenueRecognitionRentalIncomeTableDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLeaseIncome_c3c17f16-2f7c-4a4b-865d-05866c01b20b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLeaseIncome"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeaseCashRentReceived_19e158d8-1de3-461b-ae43-78b10852cee3" xlink:href="glpi-20201231.xsd#glpi_OperatingLeaseCashRentReceived"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLeaseIncome_c3c17f16-2f7c-4a4b-865d-05866c01b20b" xlink:to="loc_glpi_OperatingLeaseCashRentReceived_19e158d8-1de3-461b-ae43-78b10852cee3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StraightLineRentAdjustments_d2cd1995-749c-4628-bd23-68958a7223f9" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StraightLineRentAdjustments"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLeaseIncome_c3c17f16-2f7c-4a4b-865d-05866c01b20b" xlink:to="loc_us-gaap_StraightLineRentAdjustments_d2cd1995-749c-4628-bd23-68958a7223f9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeaseGroundLeaseIncome_afb63b08-4372-4a6e-b9f0-ebacf9837b7b" xlink:href="glpi-20201231.xsd#glpi_OperatingLeaseGroundLeaseIncome"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLeaseIncome_c3c17f16-2f7c-4a4b-865d-05866c01b20b" xlink:to="loc_glpi_OperatingLeaseGroundLeaseIncome_afb63b08-4372-4a6e-b9f0-ebacf9837b7b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeaseOtherRentalRevenue_7621498d-54fa-48b9-8cc8-3c392d54c5c4" xlink:href="glpi-20201231.xsd#glpi_OperatingLeaseOtherRentalRevenue"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLeaseIncome_c3c17f16-2f7c-4a4b-865d-05866c01b20b" xlink:to="loc_glpi_OperatingLeaseOtherRentalRevenue_7621498d-54fa-48b9-8cc8-3c392d54c5c4" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/RevenueRecognitionFutureMinimumLeasePaymentsReceivableOperatingLeasesDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#RevenueRecognitionFutureMinimumLeasePaymentsReceivableOperatingLeasesDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/RevenueRecognitionFutureMinimumLeasePaymentsReceivableOperatingLeasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureIncometoBeRecognized_54efc094-3e8c-4261-a4db-fb0b3324989f" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureIncometoBeRecognized"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureIncometoBeRecognizedCurrent_c6ce0707-b4de-4796-992a-cf0eb8578548" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureIncometoBeRecognizedCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_OperatingLeasesFutureIncometoBeRecognized_54efc094-3e8c-4261-a4db-fb0b3324989f" xlink:to="loc_glpi_OperatingLeasesFutureIncometoBeRecognizedCurrent_c6ce0707-b4de-4796-992a-cf0eb8578548" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureIncometoBeRecognizedinTwoYears_be374140-22ff-4981-b2c6-6502d5cbec2a" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureIncometoBeRecognizedinTwoYears"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_OperatingLeasesFutureIncometoBeRecognized_54efc094-3e8c-4261-a4db-fb0b3324989f" xlink:to="loc_glpi_OperatingLeasesFutureIncometoBeRecognizedinTwoYears_be374140-22ff-4981-b2c6-6502d5cbec2a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureIncometoBeRecognizedinThreeYears_d915613e-542d-4408-a65b-fd8e681abbd1" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureIncometoBeRecognizedinThreeYears"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_OperatingLeasesFutureIncometoBeRecognized_54efc094-3e8c-4261-a4db-fb0b3324989f" xlink:to="loc_glpi_OperatingLeasesFutureIncometoBeRecognizedinThreeYears_d915613e-542d-4408-a65b-fd8e681abbd1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureIncometoBeRecognizedinFourYears_eccd8bd8-b1ee-4207-a3e4-4be427699cea" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureIncometoBeRecognizedinFourYears"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_OperatingLeasesFutureIncometoBeRecognized_54efc094-3e8c-4261-a4db-fb0b3324989f" xlink:to="loc_glpi_OperatingLeasesFutureIncometoBeRecognizedinFourYears_eccd8bd8-b1ee-4207-a3e4-4be427699cea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureIncometoBeRecognizedinFiveYears_7e2000ef-2308-470c-8a04-5eb551754e5a" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureIncometoBeRecognizedinFiveYears"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_OperatingLeasesFutureIncometoBeRecognized_54efc094-3e8c-4261-a4db-fb0b3324989f" xlink:to="loc_glpi_OperatingLeasesFutureIncometoBeRecognizedinFiveYears_7e2000ef-2308-470c-8a04-5eb551754e5a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureIncometoBeRecognizedThereafter_bccffc04-385a-4b2a-b175-cd4c88cbf901" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureIncometoBeRecognizedThereafter"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_OperatingLeasesFutureIncometoBeRecognized_54efc094-3e8c-4261-a4db-fb0b3324989f" xlink:to="loc_glpi_OperatingLeasesFutureIncometoBeRecognizedThereafter_bccffc04-385a-4b2a-b175-cd4c88cbf901" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_StraightLineRentAdjustmentsNet_68502fcb-6f07-42f2-838b-88be68a44307" xlink:href="glpi-20201231.xsd#glpi_StraightLineRentAdjustmentsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_StraightLineRentAdjustmentsCurrent_d2c4bd62-293d-4cdf-83ef-653b85917214" xlink:href="glpi-20201231.xsd#glpi_StraightLineRentAdjustmentsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_StraightLineRentAdjustmentsNet_68502fcb-6f07-42f2-838b-88be68a44307" xlink:to="loc_glpi_StraightLineRentAdjustmentsCurrent_d2c4bd62-293d-4cdf-83ef-653b85917214" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_StraightLineRentAdjustmentsinTwoYears_090d9f6e-c4c5-40ed-bb11-dba11b33d387" xlink:href="glpi-20201231.xsd#glpi_StraightLineRentAdjustmentsinTwoYears"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_StraightLineRentAdjustmentsNet_68502fcb-6f07-42f2-838b-88be68a44307" xlink:to="loc_glpi_StraightLineRentAdjustmentsinTwoYears_090d9f6e-c4c5-40ed-bb11-dba11b33d387" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_StraightLineRentAdjustmentsinThreeYears_e2fdbbca-447c-42b8-a9b0-9e7b9f1f2d39" xlink:href="glpi-20201231.xsd#glpi_StraightLineRentAdjustmentsinThreeYears"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_StraightLineRentAdjustmentsNet_68502fcb-6f07-42f2-838b-88be68a44307" xlink:to="loc_glpi_StraightLineRentAdjustmentsinThreeYears_e2fdbbca-447c-42b8-a9b0-9e7b9f1f2d39" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_StraightLineRentAdjustmentsinFourYears_03871002-701f-4611-ba33-83587450207e" xlink:href="glpi-20201231.xsd#glpi_StraightLineRentAdjustmentsinFourYears"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_StraightLineRentAdjustmentsNet_68502fcb-6f07-42f2-838b-88be68a44307" xlink:to="loc_glpi_StraightLineRentAdjustmentsinFourYears_03871002-701f-4611-ba33-83587450207e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_StraightLineRentAdjustmentsinFiveYears_064f07dc-1b6b-4201-a574-acb7bf0feb9a" xlink:href="glpi-20201231.xsd#glpi_StraightLineRentAdjustmentsinFiveYears"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_StraightLineRentAdjustmentsNet_68502fcb-6f07-42f2-838b-88be68a44307" xlink:to="loc_glpi_StraightLineRentAdjustmentsinFiveYears_064f07dc-1b6b-4201-a574-acb7bf0feb9a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_StraightLineRentAdjustmentsThereafter_edd564f7-a922-4626-9f04-550c49bacc5c" xlink:href="glpi-20201231.xsd#glpi_StraightLineRentAdjustmentsThereafter"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_StraightLineRentAdjustmentsNet_68502fcb-6f07-42f2-838b-88be68a44307" xlink:to="loc_glpi_StraightLineRentAdjustmentsThereafter_edd564f7-a922-4626-9f04-550c49bacc5c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivable_a009b53c-ad51-4d8f-9fbe-0612a766da46" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivable"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableCurrent_b4ee927c-71c3-4993-9419-6ec5f6ffa863" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivable_a009b53c-ad51-4d8f-9fbe-0612a766da46" xlink:to="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableCurrent_b4ee927c-71c3-4993-9419-6ec5f6ffa863" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInTwoYears_65e8363a-7170-4345-b07a-f6c59a1b03e2" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInTwoYears"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivable_a009b53c-ad51-4d8f-9fbe-0612a766da46" xlink:to="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInTwoYears_65e8363a-7170-4345-b07a-f6c59a1b03e2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInThreeYears_f126f14c-1e05-4110-bd90-64902fd5fce8" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInThreeYears"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivable_a009b53c-ad51-4d8f-9fbe-0612a766da46" xlink:to="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInThreeYears_f126f14c-1e05-4110-bd90-64902fd5fce8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInFourYears_89e5119b-fec6-4e13-8b6d-4b3a92e2b65a" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInFourYears"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivable_a009b53c-ad51-4d8f-9fbe-0612a766da46" xlink:to="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInFourYears_89e5119b-fec6-4e13-8b6d-4b3a92e2b65a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInFiveYears_b600ac48-4ce2-4b8a-99ac-bdaf7b1a8ded" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInFiveYears"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivable_a009b53c-ad51-4d8f-9fbe-0612a766da46" xlink:to="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableInFiveYears_b600ac48-4ce2-4b8a-99ac-bdaf7b1a8ded" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableThereafter_b308422e-5c50-432f-8e6d-2c1429b0828d" xlink:href="glpi-20201231.xsd#glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableThereafter"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivable_a009b53c-ad51-4d8f-9fbe-0612a766da46" xlink:to="loc_glpi_OperatingLeasesFutureMinimumBaseGroundPaymentsReceivableThereafter_b308422e-5c50-432f-8e6d-2c1429b0828d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_01f13016-dc0b-49cd-99ab-00d96b6bc76f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_4c021a45-ea06-4759-af4d-b932d980ea91" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_01f13016-dc0b-49cd-99ab-00d96b6bc76f" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_4c021a45-ea06-4759-af4d-b932d980ea91" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_4e12150d-4897-4301-9cd4-d4b7493ada45" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_01f13016-dc0b-49cd-99ab-00d96b6bc76f" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_4e12150d-4897-4301-9cd4-d4b7493ada45" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_45f1c866-0d80-49bd-8dd1-1a50082af97b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_01f13016-dc0b-49cd-99ab-00d96b6bc76f" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_45f1c866-0d80-49bd-8dd1-1a50082af97b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_39e62812-1963-4c03-802f-79e3b7d32553" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_01f13016-dc0b-49cd-99ab-00d96b6bc76f" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_39e62812-1963-4c03-802f-79e3b7d32553" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_d1f48c7e-3fd0-4007-8ca2-800a937d24f8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_01f13016-dc0b-49cd-99ab-00d96b6bc76f" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_d1f48c7e-3fd0-4007-8ca2-800a937d24f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_7a409da3-1b36-4199-9831-c71104f95765" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_01f13016-dc0b-49cd-99ab-00d96b6bc76f" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_7a409da3-1b36-4199-9831-c71104f95765" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/StockBasedCompensation" xlink:type="simple" xlink:href="glpi-20201231.xsd#StockBasedCompensation"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/StockBasedCompensation" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/StockBasedCompensationTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#StockBasedCompensationTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/StockBasedCompensationTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/StockBasedCompensationNarrativeDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#StockBasedCompensationNarrativeDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/StockBasedCompensationNarrativeDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/StockBasedCompensationRestrictedStockAwardActivityDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#StockBasedCompensationRestrictedStockAwardActivityDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/StockBasedCompensationRestrictedStockAwardActivityDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/StockBasedCompensationPerformanceBasedRestrictedStockAwardsActivityDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#StockBasedCompensationPerformanceBasedRestrictedStockAwardsActivityDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/StockBasedCompensationPerformanceBasedRestrictedStockAwardsActivityDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/IncomeTaxes" xlink:type="simple" xlink:href="glpi-20201231.xsd#IncomeTaxes"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/IncomeTaxes" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/IncomeTaxesTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#IncomeTaxesTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/IncomeTaxesTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_0dfe3fd1-6bdd-418c-90a4-dffb59ef6c79" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_b4f03cac-5e75-440d-9c70-c339b0bb9d74" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_0dfe3fd1-6bdd-418c-90a4-dffb59ef6c79" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_b4f03cac-5e75-440d-9c70-c339b0bb9d74" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_beffcfa3-4d24-4646-9505-1f8316f8ab9a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsOther"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_0dfe3fd1-6bdd-418c-90a4-dffb59ef6c79" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_beffcfa3-4d24-4646-9505-1f8316f8ab9a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_e0601986-8496-445a-b95b-f61b99d5df0b" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_0dfe3fd1-6bdd-418c-90a4-dffb59ef6c79" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_e0601986-8496-445a-b95b-f61b99d5df0b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment_3f832722-9dfd-4623-a867-21a25e03d93c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_0dfe3fd1-6bdd-418c-90a4-dffb59ef6c79" xlink:to="loc_us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment_3f832722-9dfd-4623-a867-21a25e03d93c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilities_fcb4ec77-d353-42cd-86e7-3e6b06bac9b5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_06152521-2458-4768-ae2d-246c8ac60e04" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_fcb4ec77-d353-42cd-86e7-3e6b06bac9b5" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_06152521-2458-4768-ae2d-246c8ac60e04" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_e56f9855-1624-4e17-85c9-60cadb0e3f4c" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_fcb4ec77-d353-42cd-86e7-3e6b06bac9b5" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_e56f9855-1624-4e17-85c9-60cadb0e3f4c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_bf01383c-6bba-4c5d-b512-f858b16a5996" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_a71e4501-c1a1-4224-924f-f39f43d1f589" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_bf01383c-6bba-4c5d-b512-f858b16a5996" xlink:to="loc_us-gaap_DeferredTaxAssetsGross_a71e4501-c1a1-4224-924f-f39f43d1f589" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_a6b47cad-1c6a-47df-9eb1-bea49921e2d0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_bf01383c-6bba-4c5d-b512-f858b16a5996" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_a6b47cad-1c6a-47df-9eb1-bea49921e2d0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_0e9182fb-bf4a-405c-9a1b-89abf6fa58e7" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_85c26b0b-b8be-49a2-94da-82e412cb8acf" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_0e9182fb-bf4a-405c-9a1b-89abf6fa58e7" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_85c26b0b-b8be-49a2-94da-82e412cb8acf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilities_65564e0c-e790-4119-af62-1ab245cbbf38" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_0e9182fb-bf4a-405c-9a1b-89abf6fa58e7" xlink:to="loc_us-gaap_DeferredTaxLiabilities_65564e0c-e790-4119-af62-1ab245cbbf38" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/IncomeTaxesProvisionforIncomeTaxesCurrentandDeferredDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#IncomeTaxesProvisionforIncomeTaxesCurrentandDeferredDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/IncomeTaxesProvisionforIncomeTaxesCurrentandDeferredDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_250a6524-bfc8-4f2d-ab08-e54644682d6a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_255c5e22-cb9b-4d4b-b564-54fa4c619311" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_250a6524-bfc8-4f2d-ab08-e54644682d6a" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_255c5e22-cb9b-4d4b-b564-54fa4c619311" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_3404023f-d3bc-4fa6-9f1d-6bf5677d3c34" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_250a6524-bfc8-4f2d-ab08-e54644682d6a" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_3404023f-d3bc-4fa6-9f1d-6bf5677d3c34" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_eacefe7e-7c58-4a7f-a8b8-302a7da7ff3a" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_97c89857-d906-43f2-a061-69f55a1341f8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_eacefe7e-7c58-4a7f-a8b8-302a7da7ff3a" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_97c89857-d906-43f2-a061-69f55a1341f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_ab6f7560-be1b-4f40-bee4-22a4d22de2ff" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_eacefe7e-7c58-4a7f-a8b8-302a7da7ff3a" xlink:to="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_ab6f7560-be1b-4f40-bee4-22a4d22de2ff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_b5ffc8ec-38ad-4a4f-9f5c-aa70787ce613" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_f6f87212-246e-4120-aed7-0e18cd9002c3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_b5ffc8ec-38ad-4a4f-9f5c-aa70787ce613" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_f6f87212-246e-4120-aed7-0e18cd9002c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_ed294227-a218-4d22-86de-69a480356b53" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_b5ffc8ec-38ad-4a4f-9f5c-aa70787ce613" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_ed294227-a218-4d22-86de-69a480356b53" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/IncomeTaxesEffectiveIncomeTaxRateReconciliationPercentDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#IncomeTaxesEffectiveIncomeTaxRateReconciliationPercentDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/IncomeTaxesEffectiveIncomeTaxRateReconciliationPercentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_ce7c8fcf-9e0e-4496-be56-45e656e1b62e" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_316ff41b-72c0-40bd-a3a7-15cda0c417b8" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_ce7c8fcf-9e0e-4496-be56-45e656e1b62e" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_316ff41b-72c0-40bd-a3a7-15cda0c417b8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses_ac37b27a-1b67-47d3-8c4c-0d21a76ad9d0" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_ce7c8fcf-9e0e-4496-be56-45e656e1b62e" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses_ac37b27a-1b67-47d3-8c4c-0d21a76ad9d0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_77c846ad-f7b7-4da6-a272-27d6cb13f520" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_ce7c8fcf-9e0e-4496-be56-45e656e1b62e" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_77c846ad-f7b7-4da6-a272-27d6cb13f520" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_EffectiveIncomeTaxRateReconciliationREITConversionBenefit_28a9fb33-70f0-4f1a-bfb4-a11e2a98ade1" xlink:href="glpi-20201231.xsd#glpi_EffectiveIncomeTaxRateReconciliationREITConversionBenefit"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_ce7c8fcf-9e0e-4496-be56-45e656e1b62e" xlink:to="loc_glpi_EffectiveIncomeTaxRateReconciliationREITConversionBenefit_28a9fb33-70f0-4f1a-bfb4-a11e2a98ade1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance_7829b9d5-c30d-408f-af07-f2e6b90b8324" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_ce7c8fcf-9e0e-4496-be56-45e656e1b62e" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance_7829b9d5-c30d-408f-af07-f2e6b90b8324" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsOther_4830ae78-6f1d-47b5-9d8f-3acf1bd098d3" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsOther"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_ce7c8fcf-9e0e-4496-be56-45e656e1b62e" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsOther_4830ae78-6f1d-47b5-9d8f-3acf1bd098d3" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/IncomeTaxesEffectiveIncomeTaxRateReconciliationAmountDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#IncomeTaxesEffectiveIncomeTaxRateReconciliationAmountDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/IncomeTaxesEffectiveIncomeTaxRateReconciliationAmountDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_4b6e7cfc-1751-4410-9c2e-6d43a79a29e5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_769f94ef-dbe2-4de6-b197-bfd86a7ccce5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_4b6e7cfc-1751-4410-9c2e-6d43a79a29e5" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_769f94ef-dbe2-4de6-b197-bfd86a7ccce5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_11d5d338-b08a-47d7-a10b-9f8de60f7f33" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_4b6e7cfc-1751-4410-9c2e-6d43a79a29e5" xlink:to="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_11d5d338-b08a-47d7-a10b-9f8de60f7f33" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_EffectiveIncomeTaxReconciliationREITConversionBenefit_e72daf21-bfab-4a43-b665-fc38336950b1" xlink:href="glpi-20201231.xsd#glpi_EffectiveIncomeTaxReconciliationREITConversionBenefit"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_4b6e7cfc-1751-4410-9c2e-6d43a79a29e5" xlink:to="loc_glpi_EffectiveIncomeTaxReconciliationREITConversionBenefit_e72daf21-bfab-4a43-b665-fc38336950b1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses_cc4f4fcb-dc33-4e62-98ba-722d4bcaf373" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_4b6e7cfc-1751-4410-9c2e-6d43a79a29e5" xlink:to="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses_cc4f4fcb-dc33-4e62-98ba-722d4bcaf373" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_glpi_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount_860b9359-3811-44a0-a8cf-d5b7ce1ada22" xlink:href="glpi-20201231.xsd#glpi_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_4b6e7cfc-1751-4410-9c2e-6d43a79a29e5" xlink:to="loc_glpi_EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount_860b9359-3811-44a0-a8cf-d5b7ce1ada22" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_907d6961-081a-47ef-b9ae-0b9563725952" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_4b6e7cfc-1751-4410-9c2e-6d43a79a29e5" xlink:to="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_907d6961-081a-47ef-b9ae-0b9563725952" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_5227725a-6fd4-4749-bfe2-0e85eea0b34f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_4b6e7cfc-1751-4410-9c2e-6d43a79a29e5" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_5227725a-6fd4-4749-bfe2-0e85eea0b34f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/EarningsPerShareEarningsPerShare" xlink:type="simple" xlink:href="glpi-20201231.xsd#EarningsPerShareEarningsPerShare"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/EarningsPerShareEarningsPerShare" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/EarningsPerShareEarningsPerShareTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#EarningsPerShareEarningsPerShareTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/EarningsPerShareEarningsPerShareTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/EarningsPerShareEarningsPerShareWeightedAverageCommonSharesOutstandingDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#EarningsPerShareEarningsPerShareWeightedAverageCommonSharesOutstandingDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/EarningsPerShareEarningsPerShareWeightedAverageCommonSharesOutstandingDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/EarningsPerShareEarningsPerShareEPSCalculationsDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#EarningsPerShareEarningsPerShareEPSCalculationsDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/EarningsPerShareEarningsPerShareEPSCalculationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_94326f7e-ec9c-4a5e-ad7e-2f713a0a05b4" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_753ce361-ed0c-4828-aa74-ac47cbda5d7f" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_94326f7e-ec9c-4a5e-ad7e-2f713a0a05b4" xlink:to="loc_us-gaap_NetIncomeLoss_753ce361-ed0c-4828-aa74-ac47cbda5d7f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic_81abfc2c-6fc7-4349-8909-5d2ae6738dd5" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_94326f7e-ec9c-4a5e-ad7e-2f713a0a05b4" xlink:to="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic_81abfc2c-6fc7-4349-8909-5d2ae6738dd5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ShareholdersEquity" xlink:type="simple" xlink:href="glpi-20201231.xsd#ShareholdersEquity"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ShareholdersEquity" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ShareholdersEquityTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#ShareholdersEquityTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ShareholdersEquityTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ShareholdersEquityCommonStockDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#ShareholdersEquityCommonStockDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ShareholdersEquityCommonStockDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ShareholdersEquityDividendsDeclaredandPaidDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#ShareholdersEquityDividendsDeclaredandPaidDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ShareholdersEquityDividendsDeclaredandPaidDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ShareholdersEquityDividendClassificationDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#ShareholdersEquityDividendClassificationDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ShareholdersEquityDividendClassificationDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SegmentInformation" xlink:type="simple" xlink:href="glpi-20201231.xsd#SegmentInformation"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SegmentInformation" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SegmentInformationTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#SegmentInformationTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SegmentInformationTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SegmentInformationDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#SegmentInformationDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SegmentInformationDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SupplementalDisclosuresofCashFlowInformationandNoncashActivities" xlink:type="simple" xlink:href="glpi-20201231.xsd#SupplementalDisclosuresofCashFlowInformationandNoncashActivities"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SupplementalDisclosuresofCashFlowInformationandNoncashActivities" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SupplementalDisclosuresofCashFlowInformationandNoncashActivitiesTables" xlink:type="simple" xlink:href="glpi-20201231.xsd#SupplementalDisclosuresofCashFlowInformationandNoncashActivitiesTables"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SupplementalDisclosuresofCashFlowInformationandNoncashActivitiesTables" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SupplementalDisclosuresofCashFlowInformationandNoncashActivitiesSupplementalCashFlowInformationDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#SupplementalDisclosuresofCashFlowInformationandNoncashActivitiesSupplementalCashFlowInformationDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SupplementalDisclosuresofCashFlowInformationandNoncashActivitiesSupplementalCashFlowInformationDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/SupplementalDisclosuresofCashFlowInformationandNoncashActivitiesNoncashInvestingandFinancingActivitiesDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#SupplementalDisclosuresofCashFlowInformationandNoncashActivitiesNoncashInvestingandFinancingActivitiesDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/SupplementalDisclosuresofCashFlowInformationandNoncashActivitiesNoncashInvestingandFinancingActivitiesDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ScheduleIIIRealEstateAssetsandAccumulatedDepreciation" xlink:type="simple" xlink:href="glpi-20201231.xsd#ScheduleIIIRealEstateAssetsandAccumulatedDepreciation"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ScheduleIIIRealEstateAssetsandAccumulatedDepreciation" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ScheduleIIIRealEstateAssetsandAccumulatedDepreciationDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#ScheduleIIIRealEstateAssetsandAccumulatedDepreciationDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ScheduleIIIRealEstateAssetsandAccumulatedDepreciationDetails" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ScheduleIVMortgageLoansonRealEstate" xlink:type="simple" xlink:href="glpi-20201231.xsd#ScheduleIVMortgageLoansonRealEstate"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ScheduleIVMortgageLoansonRealEstate" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.glpropinc.com/role/ScheduleIVMortgageLoansonRealEstateReconciliationofLoansonRealEstateDetails" xlink:type="simple" xlink:href="glpi-20201231.xsd#ScheduleIVMortgageLoansonRealEstateReconciliationofLoansonRealEstateDetails"/>
  <link:calculationLink xlink:role="http://www.glpropinc.com/role/ScheduleIVMortgageLoansonRealEstateReconciliationofLoansonRealEstateDetails" xlink:type="extended"/>
</link:linkbase>
