Exhibit 21

SUBSIDIARIES OF THE REGISTRANT

All the companies listed below are included in Unit Corporation's consolidated financial statements. Except as otherwise indicated below, Unit Corporation has 100% direct or indirect ownership of, and ultimate voting control in, each of these companies. The list is as of December 31, 2022 and excludes subsidiaries which are primarily inactive or taken singly, or as a group, do not constitute significant subsidiaries:

State or ProvincePercentage
               Subsidiaryof IncorporationOwned
Unit Drilling CompanyOklahoma100%
Unit Petroleum CompanyOklahoma100%