Oil & Gas Companies in Knox County, OH
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Cameron Properties | Columbus, OH 43220 | Oil & Gas Operator | Dec 1996 |
| 2 | Camphire George E. | Danville, OH 43014 | Oil & Gas Operator | Dec 2024 |
| 3 | Carper Ruth A& Henthorn Jr W D | Pataskala, OH 43062 | Oil & Gas Operator | Dec 2024 |
| 4 | Central Energy Co Inc | Newark, OH 43055 | Oil & Gas Operator | Dec 1998 |
| 5 | Cgas Exploration | Charleston, WV 25301 | Oil & Gas Operator | Dec 2006 |
| 6 | Chesapeake Appalachia, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Sep 2025 |
| 7 | Christa Oil Co | Cumberland, OH 43732 | Oil & Gas Operator | Nov 1999 |
| 8 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 9 | Columbia Gas Transmission, LLC | Charleston, WV 25314 | Oil & Gas Operator | Dec 2021 |
| 10 | Corning Oil Co Inc | Sonora, OH 43785 | Oil & Gas Operator | Dec 2002 |
Production numbers shown above are only for Knox County, OH and for the production period listed.