Oil & Gas Companies in Trego County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | S & W Oil & Gas, LLC | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 2 | Sabre Exploratio | | Oil Operator | Oct 1988 |
| 3 | Samson Properties, Incorporated | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2008 |
| 4 | Samuel Gary Jr. & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 5 | San Saba Energy | Hays, KS 67601 | Oil Operator | May 1998 |
| 6 | Schmitt Carmen I | | Oil Operator | Dec 1996 |
| 7 | Shelby Resources LLC | Denver, CO 80207 | Oil & Gas Operator | Jun 2025 |
| 8 | Shields Oil Prod | | Oil & Gas Operator | Aug 1995 |
| 9 | Shields Oil Producers Inc. | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 10 | Slawson Donald C | Wichita, KS 67202 | Oil & Gas Operator | Apr 2025 |
| 11 | Southern States | | Oil & Gas Operator | Jul 1988 |
| 12 | Spalsbury, Arthur L | Hays, KS 67601 | Oil Operator | Aug 2001 |
| 13 | Spines Explorati | | Oil & Gas Operator | Dec 1990 |
| 14 | Spiral Energy Corp. | Midland, TX 79705 | Oil & Gas Operator | Dec 2019 |
| 15 | Staab Energy & Leasing | | Oil Operator | May 2024 |
| 16 | Staab Oil Co., A General Partnership | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 17 | Standard Operating Company | Wichita, KS 67205 | Oil & Gas Operator | Jun 2025 |
| 18 | Stauffer Oil & G | | Oil Operator | Jun 1987 |
| 19 | Strata Energy Re | | Oil Operator | Nov 1987 |
| 20 | Stull Oil LLC | Natoma, KS 67651 | Oil Operator | Jun 2025 |
| 21 | Sunburst Explora | | Oil Operator | May 1990 |
| 22 | Swenco-Western I | | Oil Operator | Sep 1987 |
Production numbers shown above are only for Trego County, KS and for the production period listed.