Oil & Gas Companies in Knox County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Canan Mowrey Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 2 | CDJ Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 3 | Chap Operating, Inc. | Knox City, TX 79529 | Oil & Gas Operator | Oct 2025 |
| 4 | China Star Oil Co., LLC | Woodway, TX 76712 | Oil & Gas Operator | Jun 2010 |
| 5 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |
| 6 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 7 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 8 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 9 | Cooper, Glenn W. Oil & Gas | Seymour, TX 76380 | Oil & Gas Operator | Feb 2000 |
| 10 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 11 | Covenant Operating, LLC | Wichita Falls, TX 76308 | Oil Operator | Oct 2025 |
| 12 | Crego Exploration | Dallas, TX 75243 | Oil & Gas Operator | Oct 2025 |
| 13 | Creston Petroleum Corp. | Dallas, TX 75380 | Oil & Gas Operator | Oct 2025 |
| 14 | Crocker Oil Company | Windthorst, TX 76389 | Oil & Gas Operator | Aug 1999 |
| 15 | Cundiff Operating Company | Dallas, TX 75238 | Oil & Gas Operator | Oct 2025 |
| 16 | Cypress Production, Inc. | Azle, TX 76020 | Oil & Gas Operator | Oct 2025 |
Production numbers shown above are only for Knox County, TX and for the production period listed.