<?xml version="1.0" encoding="utf-8"?>
<linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.xbrl.org/2003/linkbase">
  <roleRef roleURI="http://oberbankag.com/xbrl/2020/roles/GewinnVerlust" xlink:href="oberbankag-2020-12-31.xsd#GewinnVerlust" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <roleRef roleURI="http://oberbankag.com/xbrl/2020/roles/Bilanz" xlink:href="oberbankag-2020-12-31.xsd#Bilanz" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <roleRef roleURI="http://oberbankag.com/xbrl/2020/roles/Kapitalflussrechnung" xlink:href="oberbankag-2020-12-31.xsd#Kapitalflussrechnung" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />
  <calculationLink xlink:role="http://oberbankag.com/xbrl/2020/roles/GewinnVerlust" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_ErgebnisAusFinanzVermoegenswertenFVOCI" xlink:label="oberbankag_ErgebnisAusFinanzVermoegenswertenFVOCI" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss" xlink:label="ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungSummeSonstigerBetrieblicherErfolg" xlink:label="oberbankag_VeraenderungSummeSonstigerBetrieblicherErfolg" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_GainsLossesOnFinancialAssetsAtAmortisedCost" xlink:label="ifrs-full_GainsLossesOnFinancialAssetsAtAmortisedCost" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungErgebnisAusFinanzVermoegenswertenFVOCI" xlink:label="oberbankag_VeraenderungErgebnisAusFinanzVermoegenswertenFVOCI" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_SummeSonstigerBetrieblicherErfolg" xlink:label="oberbankag_SummeSonstigerBetrieblicherErfolg" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungSonstigerBetrieblicherErfolg" xlink:label="oberbankag_VeraenderungSonstigerBetrieblicherErfolg" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungErgebnisAusFinanzVermoegenswertenFVPL" xlink:label="oberbankag_VeraenderungErgebnisAusFinanzVermoegenswertenFVPL" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherOperatingIncomeExpense" xlink:label="ifrs-full_OtherOperatingIncomeExpense" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungErgebnisAusFinanzVermoegenswertenAC" xlink:label="oberbankag_VeraenderungErgebnisAusFinanzVermoegenswertenAC" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_SummeSonstigerBetrieblicherErfolg" xlink:to="ifrs-full_GainsLossesOnFinancialAssetsAtFairValueThroughProfitOrLoss" order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_SummeSonstigerBetrieblicherErfolg" xlink:to="oberbankag_ErgebnisAusFinanzVermoegenswertenFVOCI" order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_SummeSonstigerBetrieblicherErfolg" xlink:to="ifrs-full_GainsLossesOnFinancialAssetsAtAmortisedCost" order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_SummeSonstigerBetrieblicherErfolg" xlink:to="ifrs-full_OtherOperatingIncomeExpense" order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSummeSonstigerBetrieblicherErfolg" xlink:to="oberbankag_VeraenderungErgebnisAusFinanzVermoegenswertenFVPL" order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSummeSonstigerBetrieblicherErfolg" xlink:to="oberbankag_VeraenderungErgebnisAusFinanzVermoegenswertenFVOCI" order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSummeSonstigerBetrieblicherErfolg" xlink:to="oberbankag_VeraenderungErgebnisAusFinanzVermoegenswertenAC" order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSummeSonstigerBetrieblicherErfolg" xlink:to="oberbankag_VeraenderungSonstigerBetrieblicherErfolg" order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
  </calculationLink>
  <calculationLink xlink:role="http://oberbankag.com/xbrl/2020/roles/Bilanz" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungLatenteSteueransprüche" xlink:label="oberbankag_VeraenderungLatenteSteueransprüche" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherAssets" xlink:label="ifrs-full_OtherAssets" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DeferredTaxAssets" xlink:label="ifrs-full_DeferredTaxAssets" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungSonstigeSchulden" xlink:label="oberbankag_VeraenderungSonstigeSchulden" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DerivativeFinancialLiabilities" xlink:label="ifrs-full_DerivativeFinancialLiabilities" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungHandelspassiva" xlink:label="oberbankag_VeraenderungHandelspassiva" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DeferredTaxLiabilities" xlink:label="ifrs-full_DeferredTaxLiabilities" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_SonstigeAktiva" xlink:label="oberbankag_SonstigeAktiva" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungLatenteSteuerschulden" xlink:label="oberbankag_VeraenderungLatenteSteuerschulden" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungSonstigePassiva" xlink:label="oberbankag_VeraenderungSonstigePassiva" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungNegativeMarktwertevongeschlossenenDerivatendesBankbuches" xlink:label="oberbankag_VeraenderungNegativeMarktwertevongeschlossenenDerivatendesBankbuches" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungSonstigeAktiva" xlink:label="oberbankag_VeraenderungSonstigeAktiva" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungSteuerschulden" xlink:label="oberbankag_VeraenderungSteuerschulden" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungSonstige" xlink:label="oberbankag_VeraenderungSonstige" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraenderungPositiveMarktwertevongeschlossenenDerivatendesBankbuchs" xlink:label="oberbankag_VeraenderungPositiveMarktwertevongeschlossenenDerivatendesBankbuchs" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentTaxLiabilities" xlink:label="ifrs-full_CurrentTaxLiabilities" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_VeraendeungLaufendeSteuerschulden" xlink:label="oberbankag_VeraendeungLaufendeSteuerschulden" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherLiabilities" xlink:label="ifrs-full_OtherLiabilities" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_SonstigePassiva" xlink:label="oberbankag_SonstigePassiva" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DerivativeFinancialAssets" xlink:label="ifrs-full_DerivativeFinancialAssets" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_Steuerschulden" xlink:label="oberbankag_Steuerschulden" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_SonstigeAktiva" xlink:to="ifrs-full_DeferredTaxAssets" order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_SonstigeAktiva" xlink:to="ifrs-full_DerivativeFinancialAssets" order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_SonstigeAktiva" xlink:to="ifrs-full_OtherAssets" order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_Steuerschulden" xlink:to="ifrs-full_CurrentTaxLiabilities" order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_Steuerschulden" xlink:to="ifrs-full_DeferredTaxLiabilities" order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_SonstigePassiva" xlink:to="ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading" order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_SonstigePassiva" xlink:to="oberbankag_Steuerschulden" order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_SonstigePassiva" xlink:to="ifrs-full_DerivativeFinancialLiabilities" order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_SonstigePassiva" xlink:to="ifrs-full_OtherLiabilities" order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSonstigeAktiva" xlink:to="oberbankag_VeraenderungLatenteSteueransprüche" order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSonstigeAktiva" xlink:to="oberbankag_VeraenderungPositiveMarktwertevongeschlossenenDerivatendesBankbuchs" order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSonstigeAktiva" xlink:to="oberbankag_VeraenderungSonstige" order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSteuerschulden" xlink:to="oberbankag_VeraendeungLaufendeSteuerschulden" order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSteuerschulden" xlink:to="oberbankag_VeraenderungLatenteSteuerschulden" order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSonstigePassiva" xlink:to="oberbankag_VeraenderungHandelspassiva" order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSonstigePassiva" xlink:to="oberbankag_VeraenderungSteuerschulden" order="25" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSonstigePassiva" xlink:to="oberbankag_VeraenderungNegativeMarktwertevongeschlossenenDerivatendesBankbuches" order="26" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_VeraenderungSonstigePassiva" xlink:to="oberbankag_VeraenderungSonstigeSchulden" order="27" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
  </calculationLink>
  <calculationLink xlink:role="http://oberbankag.com/xbrl/2020/roles/Kapitalflussrechnung" xlink:type="extended" xmlns:xlink="http://www.w3.org/1999/xlink">
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_ProfitLoss" xlink:label="ifrs-full_ProfitLoss" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherMaterialNoncashItems" xlink:label="ifrs-full_OtherMaterialNoncashItems" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_GewinneundVerlusteausderVeräußerungvonFinanzanlagenSachanlagenundImmateriellenVermoegensgegenstaenden" xlink:label="oberbankag_GewinneundVerlusteausderVeräußerungvonFinanzanlagenSachanlagenundImmateriellenVermoegensgegenstaenden" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForProvisions" xlink:label="ifrs-full_AdjustmentsForProvisions" />
    <loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:label="ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" />
    <loc xlink:type="locator" xlink:href="oberbankag-2020-12-31.xsd#oberbankag_Zwischensumme" xlink:label="oberbankag_Zwischensumme" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_Zwischensumme" xlink:to="ifrs-full_ProfitLoss" order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_Zwischensumme" xlink:to="ifrs-full_AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_Zwischensumme" xlink:to="ifrs-full_AdjustmentsForProvisions" order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_Zwischensumme" xlink:to="ifrs-full_OtherMaterialNoncashItems" order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
    <calculationArc xlink:type="arc" xlink:from="oberbankag_Zwischensumme" xlink:to="oberbankag_GewinneundVerlusteausderVeräußerungvonFinanzanlagenSachanlagenundImmateriellenVermoegensgegenstaenden" order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" priority="1" weight="1.0" />
  </calculationLink>
</linkbase>