| 601 | Sundance Operating Co | | Oil & Gas Operator | Jul 2016 |
| 602 | Sunday-Smith Mary E | Mannford, OK 74044-1457 | Oil & Gas Operator | Mar 2015 |
| 603 | Sundial Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 604 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Apr 2024 |
| 605 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Dec 2023 |
| 606 | Sunland Enterprises Corp | Norman, OK 73071 | Oil Operator | Sep 2004 |
| 607 | Sunlight Exploration, Inc. | Canyon, TX 79015 | Oil & Gas Operator | Apr 2024 |
| 608 | Sunnybook Transmission Inc | Houston, TX 77002 | Oil & Gas Operator | Oct 1992 |
| 609 | Sunoco Partners MKT & Terminal | Tulsa, OK 74102-2039 | Oil & Gas Operator | Jan 2019 |
| 610 | Sunrise Energy Co | Dallas, TX 75206 | Oil & Gas Operator | Aug 1993 |
| 611 | Sunset Energy L L C | Palm Harbor, FL 34683-3044 | Oil Operator | Dec 2007 |
| 612 | Sunstone Energy Company | Tulsa, OK 74153 | Oil & Gas Operator | Aug 2009 |
| 613 | Sunterra Energy Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2009 |
| 614 | Sunwest Oklahoma, Inc | Dallas, TX 75231 | Oil & Gas Operator | May 2023 |
| 615 | Suoco Oil Corporation | Pampa, TX 79066 | Oil & Gas Operator | Apr 2024 |
| 616 | Super Heaters LLC | | Oil Operator | Mar 2022 |
| 617 | Superior Companies Inc | Bartlesville, OK 74003-2621 | Oil & Gas Operator | May 2013 |
| 618 | Superior Oil & Gas Company Of Oklahoma | Calumet, OK 73014-8528 | Oil & Gas Operator | Jan 2024 |
| 619 | Superior Oil & Gas LLC | Ringwood, OK 73768-9658 | Oil & Gas Operator | Jan 2024 |
| 620 | Superior Oil Co. | Denver, CO 80217-5444 | Oil & Gas Operator | Feb 2001 |
| 621 | Superior Production LLC | | Oil & Gas Operator | Jan 2024 |
| 622 | Superior Production MGMT Inc | Calumet, OK 73014 | Oil & Gas Operator | Mar 2015 |
| 623 | Superior Saltwater Disposal LLC | | Oil & Gas Operator | Dec 2016 |
| 624 | Supplyco Inc | Perry, OK 73077 | Oil & Gas Operator | Apr 2014 |
| 625 | Surge Ok Midstream LLC | | Oil Operator | Jan 2024 |
| 626 | Survivor Oil Inc | Tulsa, OK 74133 | Oil & Gas Operator | Sep 2007 |
| 627 | Susaect LLC | | Oil Operator | Jan 2024 |
| 628 | Sutton Eddie L Oil Company | Loco, OK 73442-9701 | Oil Operator | Jan 2024 |
| 629 | Sutton Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 630 | Sutton Oil Company, LLC | Loco, OK 73442 | Oil Operator | Jan 2024 |
| 631 | Sutton-Munson Oil | Edmond, OK 73034 | Oil & Gas Operator | Jun 1999 |
| 632 | Swadley Et Al | Holdenville, OK 74848-0794 | Oil & Gas Operator | Nov 2014 |
| 633 | Swadley Roy W & Judith I | Holdenville, OK 74848-0794 | Oil & Gas Operator | Mar 2015 |
| 634 | Swain Clinton Edward | Ochelata, OK 74051-2220 | Oil Operator | Nov 2023 |
| 635 | Swain, Randall R | | Oil Operator | Aug 2000 |
| 636 | Swan Oil Company | Kellyville, OK 74039-5607 | Oil & Gas Operator | Dec 2023 |
| 637 | Swan Richard N | Claremore, OK 74018-0503 | Oil Operator | Aug 2013 |
| 638 | Swanson Douglas L & Sharon | Bartlesville, OK 74003-9319 | Oil Operator | Jan 2024 |
| 639 | Swanson G T | Duncan, OK 73533 | Oil & Gas Operator | Nov 1998 |
| 640 | Swanson, Tommy Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Mar 2017 |
| 641 | Swearingen Robert E Dba Sabo Production | Seminole, OK 74868-2267 | Oil & Gas Operator | Dec 2023 |
| 642 | Sweetwater Exploration LLC | Norman, OK 73069-5636 | Oil & Gas Operator | Dec 2023 |
| 643 | Swenton, Michael J. | Tulsa, OK 74105 | Oil & Gas Operator | Dec 2023 |
| 644 | Swift A W & Company Inc | Sand Springs, OK 74063-5124 | Oil Operator | Jun 2003 |
| 645 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 646 | Swinea Well Service Inc | Drumright, OK 74030 | Oil & Gas Operator | Mar 2015 |
| 647 | Swinkwood Oil Co | | Oil Operator | Apr 2015 |
| 648 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 649 | SWS Operating LLC | | Oil Operator | Dec 2023 |
| 650 | Sydson D'Oro Expl. Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 1992 |
| 651 | Sylvan Oil Operating Company | Tulsa, OK 74103-3516 | Oil & Gas Operator | Apr 2016 |
| 652 | Synergex Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2023 |