Oil & Gas Companies in Allen County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | T.C.G. Oil Co. | Iola, KS 66749 | Oil Operator | Sep 2009 |
| 2 | Tate Exploration | Lakin, KS 67860 | Oil & Gas Operator | Sep 1994 |
| 3 | Taylor-Cranor Oi | | Oil Operator | Dec 1987 |
| 4 | Tech American Re | | Oil Operator | Sep 1985 |
| 5 | Texokan Energy C | | Oil Operator | Nov 1986 |
| 6 | Thompson Oil Co. | Corsicana, TX 75151 | Oil & Gas Operator | Jul 2025 |
| 7 | Thompson, Don W | Herington, KS 67449 | Oil Operator | Jul 2003 |
| 8 | Timberlake Energy Corporation | Cypress, TX 77429 | Oil Operator | Nov 2013 |
| 9 | Tontol, LLC | Scottsdale, AZ 85250 | Oil Operator | Apr 2025 |
| 10 | Tri-L Oil Co. | | Oil Operator | Sep 2015 |
| 11 | Triple B Crude, LLC | Colony, KS 66015 | Oil Operator | Jun 2025 |
| 12 | Triple C Petroleum LLC | Colony, KS 66015 | Oil Operator | Nov 2019 |
| 13 | TWM Production Co., A General Partnership | Chanute, KS 66720 | Oil Operator | May 2025 |
Production numbers shown above are only for Allen County, KS and for the production period listed.