| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | F & M Oil Compan | Oil & Gas Operator | Feb 1993 | |
| 2 | Farmer, John O., Inc. | Russell, KS 67665 | Oil & Gas Operator | Jun 2025 |
| 3 | Farris Well Service | Oil & Gas Operator | Dec 2021 | |
| 4 | Fina Oil & Chemi | Oil & Gas Operator | Oct 1995 | |
| 5 | Fossil Energy, LLC | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 6 | Foster Oil LLC | Oil Operator | Jun 2025 | |
| 7 | Four-Way Oper In | Oil Operator | Aug 1994 | |
| 8 | Free State Petroleum | Hays, KS 67601 | Oil Operator | Jul 2021 |
| 9 | Fremont Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 2004 |
| 10 | Frontier Oil Com | Oil & Gas Operator | May 1995 | |
| 11 | Frontier Oil Company | Oil Operator | Oct 1999 |