Oil & Gas Companies in Muskingum County, OH
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Og Co., Inc. | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 2 | Ohio Energy Assets, Inc. | Laurelville, OH 43135 | Oil & Gas Operator | Dec 2014 |
| 3 | Ohio L & M Company Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 2008 |
| 4 | Ohio Production Corp | Westerville, OH 43081 | Oil & Gas Operator | Dec 2001 |
| 5 | Ohio Production* | Newark, OH 43055 | Oil & Gas Operator | Dec 1987 |
| 6 | Omac Oil & Gas Co | Newark, OH 43055 | Oil & Gas Operator | Dec 1990 |
| 7 | Orion Petro Corp | MT Vernon, IL 62864 | Oil & Gas Operator | Dec 2016 |
| 8 | Orr Robert W Jr | Zanesville, OH 43702-2683 | Oil & Gas Operator | Dec 2023 |
| 9 | Ows Acquisition Co LLC | Louisville, OH 44641 | Oil & Gas Operator | Dec 2024 |
| 10 | Oxford Oil | Zanesville, OH 43702 | Oil & Gas Operator | Dec 2012 |
Production numbers shown above are only for Muskingum County, OH and for the production period listed.