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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2020 Workiva-->
<!--r:5c647374-c22e-4d82-bd31-d71cecf40559,g:860b52a2-aadb-4a5a-8cb3-72c319fe8ab5-->
<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.oildri.com/role/CoverPageDocument" xlink:type="simple" xlink:href="odc-20201207.xsd#CoverPageDocument"/>
  <link:calculationLink xlink:role="http://www.oildri.com/role/CoverPageDocument" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.oildri.com/role/StatementofFinancialPosition" xlink:type="simple" xlink:href="odc-20201207.xsd#StatementofFinancialPosition"/>
  <link:calculationLink xlink:role="http://www.oildri.com/role/StatementofFinancialPosition" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.oildri.com/role/StatementofIncome" xlink:type="simple" xlink:href="odc-20201207.xsd#StatementofIncome"/>
  <link:calculationLink xlink:role="http://www.oildri.com/role/StatementofIncome" xlink:type="extended"/>
  <link:roleRef roleURI="http://www.oildri.com/role/StatementofCashFlows" xlink:type="simple" xlink:href="odc-20201207.xsd#StatementofCashFlows"/>
  <link:calculationLink xlink:role="http://www.oildri.com/role/StatementofCashFlows" xlink:type="extended"/>
</link:linkbase>