Oil & Gas Companies in Montgomery County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | M & L Oil Compan | | Oil Operator | Jun 1993 |
| 2 | M & M Contractin | | Oil Operator | Mar 1992 |
| 3 | M.O.K.A.T. | Bartlesville, OK 74003 | Oil Operator | Jun 2001 |
| 4 | Maco Incorporate | | Oil Operator | Jun 1984 |
| 5 | Magnum Engineering Company | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Oct 2025 |
| 6 | Martin, Bob | Wann, OK 74083 | Oil & Gas Operator | Sep 2007 |
| 7 | Martindale Enter | | Oil & Gas Operator | Oct 1996 |
| 8 | Masek Oil Compan | | Oil Operator | Feb 1984 |
| 9 | Matador Exploration, Inc. | Sedan, KS 67361 | Oil Operator | Apr 2001 |
| 10 | MB Holdings LLC | Independence, KS 67301 | Oil Operator | Jun 2025 |
| 11 | McCann Mark Wind | | Oil & Gas Operator | Dec 1994 |
| 12 | McPherson Drilling | | Oil Operator | Jun 2015 |
| 13 | Mega Petroleum C | | Oil Operator | Jun 1990 |
| 14 | Melton, Kenneth | Wann, OK 74083 | Oil Operator | Jun 2025 |
| 15 | Merrick Oil & Gas | | Oil & Gas Operator | Mar 2025 |
| 16 | Merrico Resource | | Oil Operator | Dec 1996 |
| 17 | Midwestern Oil C | | Oil & Gas Operator | May 1995 |
| 18 | Mike Blaes & Peggy Blaes, A General Partnership | Cherryvale, KS 67335 | Oil Operator | Mar 2025 |
| 19 | Miller, Myron R. | Haven, KS 67543 | Oil Operator | Oct 2017 |
| 20 | Miller, Ralph D. & Faye C. | Cherryvale, KS 67335 | Oil Operator | Apr 2003 |
| 21 | Montgomery Count | | Oil Operator | Dec 1992 |
| 22 | Murk, James M. | Wheaton, IL 60189 | Gas Operator | Jan 1999 |
Production numbers shown above are only for Montgomery County, KS and for the production period listed.