Oil & Gas Companies in Guernsey County, OH
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | M & R Investments Ohio LLC | Birmingham, AL 35238 | Oil & Gas Operator | Dec 2019 |
| 2 | M C F Oil Co Inc | Dellroy, OH 44620 | Oil & Gas Operator | Dec 1995 |
| 3 | M-B Operating Co., Inc. | Rowlett, TX 75030 | Oil & Gas Operator | Oct 2025 |
| 4 | Mainspring LLC | Uhrichsville, OH 44683 | Oil & Gas Operator | Dec 2023 |
| 5 | Majestic Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 2007 |
| 6 | Mallett Luke-Dba Mallett Energy | New Concord, OH 43762 | Oil & Gas Operator | Dec 2016 |
| 7 | Malvern Group Inc | Clearwater, FL 33758-6817 | Oil & Gas Operator | Mar 2005 |
| 8 | Mesh LTD | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2024 |
| 9 | MFC Drilling Inc | Coshocton, OH 43812 | Oil & Gas Operator | Dec 2024 |
| 10 | Miley Gas Company | Sarahsville, OH 43779 | Gas Operator | Dec 2023 |
| 11 | Mke Producing Inc | Canton, OH 44735 | Oil & Gas Operator | Dec 2024 |
| 12 | Mobreal Oil Inc | Wilmington, DE 19808 | Oil & Gas Operator | Dec 1989 |
| 13 | Moore & Associates | Denver, CO 80202 | Oil & Gas Operator | Dec 1993 |
| 14 | Moreland Oil & Gas Inc | Dennison, OH 44621 | Oil & Gas Operator | Dec 1990 |
| 15 | Mutual Oil & Gas Co | Akron, OH 44311 | Oil & Gas Operator | Dec 2001 |
Production numbers shown above are only for Guernsey County, OH and for the production period listed.