Oil & Gas Companies in Allen County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | M & C Oil Incorp | | Oil Operator | Mar 1995 |
| 2 | M H Oil & Gas | Chanute, KS 66720 | Oil & Gas Operator | Aug 1998 |
| 3 | M.A.E. Resources, Inc. | Parker, KS 66072 | Oil Operator | Sep 2011 |
| 4 | Macha Enterprises, Inc. | Wichita Falls, TX 76309 | Oil Operator | Dec 2025 |
| 5 | Mapleton Gas Pipeline, Inc. | Mapleton, KS 66754 | Gas Operator | Jun 2011 |
| 6 | Markan Oil Incor | | Oil Operator | Mar 1991 |
| 7 | Marshall Lew L O | | Oil Operator | Jun 1994 |
| 8 | Marshall Oil LLC | Eureka, KS 67045 | Oil Operator | Jun 2025 |
| 9 | Maxam Incorporat | | Oil Operator | Jun 1991 |
| 10 | McCarty Francis | | Oil Operator | Sep 1993 |
| 11 | McClelland Oil - | | Oil Operator | Dec 2009 |
| 12 | McCoy, Jon | Erie, KS 66733 | Oil Operator | May 2025 |
| 13 | McFadden Oil Co. | | Oil Operator | Jun 2025 |
| 14 | McGown Drilling, Inc. | Mound City, KS 66056 | Oil Operator | Jun 2025 |
| 15 | Merit Energy Company, LLC | Dallas, TX 75009 | Oil & Gas Operator | Jun 2025 |
| 16 | Metro Energy, Inc. | Gladstone, MO 64118 | Oil Operator | May 1997 |
| 17 | Mico Oil & Gas | Paola, KS 66071 | Oil Operator | Aug 1995 |
| 18 | Micro Oil, LLC | Casa Grande, AZ 85193 | Oil Operator | Nov 2024 |
| 19 | Midnight Well Se | | Oil Operator | Sep 1994 |
| 20 | Midwestern Exploration Company | Edmond, OK 73013 | Oil & Gas Operator | May 2025 |
| 21 | Midwestern Oil C | | Oil & Gas Operator | May 1995 |
| 22 | Miura Petroleum | | Oil Operator | Dec 1992 |
| 23 | Monarch Energy LLC | Paola, KS 66071 | Oil Operator | Jun 2025 |
| 24 | Monfort, Roy C. | Iola, KS 66749 | Oil & Gas Operator | Sep 1989 |
| 25 | MSG Resources Inc. | Iola, KS 66749 | Oil Operator | Jun 2025 |
| 26 | Mueller Oil | | Oil Operator | May 2025 |
| 27 | Multiplex Resources, Inc. | Baytown, TX 77521 | Oil Operator | Dec 2009 |
Production numbers shown above are only for Allen County, KS and for the production period listed.