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<?xml version="1.0" encoding="windows-1252"?> |
<!-- XBRL Document Created with Wdesk from Workiva --> |
<!-- Copyright 2021 Workiva --> |
<!-- r:f9799998-2b11-480f-af8e-d09c99ba18ed,g:53b37611-83b6-4084-ac98-bfef8ae76687 --> |
<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.oneok.com/role/DocumentandEntityInformationDocument" xlink:type="simple" xlink:href="oks-20210114.xsd#DocumentandEntityInformationDocument"/> |
| <link:calculationLink xlink:role="http://www.oneok.com/role/DocumentandEntityInformationDocument" xlink:type="extended"/> |
| <link:roleRef roleURI="http://www.oneok.com/role/StatementofFinancialPosition" xlink:type="simple" xlink:href="oks-20210114.xsd#StatementofFinancialPosition"/> |
| <link:calculationLink xlink:role="http://www.oneok.com/role/StatementofFinancialPosition" xlink:type="extended"/> |
| <link:roleRef roleURI="http://www.oneok.com/role/StatementofIncome" xlink:type="simple" xlink:href="oks-20210114.xsd#StatementofIncome"/> |
| <link:calculationLink xlink:role="http://www.oneok.com/role/StatementofIncome" xlink:type="extended"/> |
| <link:roleRef roleURI="http://www.oneok.com/role/StatementofCashFlows" xlink:type="simple" xlink:href="oks-20210114.xsd#StatementofCashFlows"/> |
| <link:calculationLink xlink:role="http://www.oneok.com/role/StatementofCashFlows" xlink:type="extended"/> |
| </link:linkbase> |