Oil & Gas Companies in Knox County, OH
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Dart Oil Company | Parker, CO 80134 | Oil & Gas Operator | Dec 2024 |
| 2 | David R Hill Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 2024 |
| 3 | Deer Creek Inc | Cambridge, OH 43725 | Oil & Gas Operator | Dec 2019 |
| 4 | Delta Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 5 | Derby Oil & Gas Corp | Cumberland, OH 43732 | Oil & Gas Operator | Dec 1986 |
| 6 | Derrick Petroleum Inc | Bladensburg, OH 43005 | Oil & Gas Operator | Dec 2024 |
| 7 | Devon Energy Production Company, L.P. | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 8 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | Dec 2025 |
| 9 | Don Byers Oil & Gas LLC | Heath, OH 43056 | Oil & Gas Operator | Dec 2024 |
| 10 | Dorsey Oil & Gas LLC | Nashport, OH 43830 | Oil & Gas Operator | Dec 2024 |
| 11 | Dry Hole Producing LP | Poland, OH 44514-3631 | Oil & Gas Operator | Dec 2019 |
| 12 | Dugan Evan | Martinsburg, OH 43037 | Oil & Gas Operator | Dec 2024 |
| 13 | Dugan Guy E | Walhonding, OH 43843 | Oil & Gas Operator | Dec 2015 |
| 14 | Dugan Harry Oil Co | Newark, OH 43055 | Oil & Gas Operator | Dec 1993 |
| 15 | Dugan Oil And Gas LLC | Walhonding, OH 43843-9612 | Oil & Gas Operator | Dec 2024 |
Production numbers shown above are only for Knox County, OH and for the production period listed.