Oil & Gas Companies in Sumner County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | M & B Well Servi | | Oil Operator | Aug 1990 |
| 2 | M M Energy, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Jul 2025 |
| 3 | Mack Energy Comp | | Oil & Gas Operator | Nov 1994 |
| 4 | Manta Petroleum, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Jun 2020 |
| 5 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Jul 2025 |
| 6 | Marathon Oil Com | | Oil & Gas Operator | Dec 1996 |
| 7 | Martec Petroleum | | Oil Operator | Jan 1984 |
| 8 | McConnell Oil Properties | | Oil Operator | Jun 2025 |
| 9 | McCorgary Operations | | Oil & Gas Operator | Jun 2025 |
| 10 | McCoy Petroleum Corporation | Wichita, KS 67207 | Oil & Gas Operator | Aug 2025 |
| 11 | McNeish Oil Oper | | Oil & Gas Operator | Feb 1991 |
| 12 | Mega Petroleum Corporation | Dallas, TX 75202 | Gas Operator | Feb 1998 |
| 13 | Meredith Enterprises | | Oil Operator | Jun 1988 |
| 14 | Meyer, Norbert | Conway Springs, KS 67031 | Oil Operator | Aug 1994 |
| 15 | Meyer, Theodore J. | Conway Springs, KS 67031 | Oil Operator | Jun 2025 |
| 16 | Mike Kelso Oil, Inc. | Chase, KS 67524 | Oil & Gas Operator | Jun 2025 |
| 17 | Moran Oil Enterprises, LLC | Seminole, OK 74818 | Oil & Gas Operator | Dec 2019 |
| 18 | Muegge, Clay A. | Lamont, OK 74643 | Oil & Gas Operator | Jul 2025 |
| 19 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | Aug 2025 |
| 20 | Mustang Energy Corporation | Hays, KS 67601 | Oil Operator | Jun 2025 |
Production numbers shown above are only for Sumner County, KS and for the production period listed.