Oil & Gas Companies in Seward County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 2 | Sage Drilling Co Inc | Wichita, KS 67202 | Oil & Gas Operator | Nov 1998 |
| 3 | Samson Resources | | Oil Operator | Jan 1994 |
| 4 | Santa Fe Mineral | | Gas Operator | Oct 1994 |
| 5 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 6 | Shepler & Thomas | | Oil & Gas Operator | Oct 1992 |
| 7 | Shepler & Thomas, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Jun 2025 |
| 8 | Sidwell Oil & Ga | | Oil & Gas Operator | May 1993 |
| 9 | Skelly Oil Co | | Oil & Gas Operator | Mar 2005 |
| 10 | Slawson Donald C | Wichita, KS 67202 | Oil & Gas Operator | Apr 2025 |
| 11 | Slawson Explorat | | Oil & Gas Operator | Dec 1996 |
| 12 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 13 | Southland Royalt | | Oil & Gas Operator | Nov 1993 |
| 14 | Spring, Harry A. | Ardmore, OK 73401 | Oil Operator | Jul 2012 |
| 15 | Staghorn Resources, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2015 |
| 16 | Stallion Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Oct 2017 |
| 17 | Stelbar Oil Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Jun 2025 |
| 18 | Strata Oil Incor | | Oil Operator | Mar 1994 |
| 19 | Stratakan Exploration, LLC | Plainville, KS 67663 | Oil & Gas Operator | Jun 2025 |
| 20 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 21 | Sunfire Energy | | Oil & Gas Operator | Jun 2025 |
| 22 | Swenton Michael J | Tulsa, OK 74105 | Oil & Gas Operator | Oct 2025 |
Production numbers shown above are only for Seward County, KS and for the production period listed.