| 2601 | M M Resources, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Sep 2018 |
| 2602 | M S Drilling Company | | Oil Operator | Nov 2023 |
| 2603 | M V Purchasing LLC | Wichita, KS 67202 | Oil & Gas Operator | Oct 2022 |
| 2604 | M&M Services LLC | Neodesha, KS 66757 | Gas Operator | Jan 2024 |
| 2605 | M. A. B. Production | | Oil Operator | Nov 2009 |
| 2606 | M. J. T. Enterprises | | Oil Operator | Jan 2024 |
| 2607 | M. K. Fuhrman LLC | | Oil Operator | Nov 2023 |
| 2608 | M.A. Yost Operations, Inc | Russell, KS 67665 | Oil Operator | Jan 2024 |
| 2609 | M.A.E. Resources, Inc. | Parker, KS 66072 | Oil Operator | Sep 2011 |
| 2610 | M.C.E. Trust Group, A General Partnership | Cherryvale, KS 67335 | Oil & Gas Operator | Sep 2009 |
| 2611 | M.O.K.A.T. | Bartlesville, OK 74003 | Oil Operator | Jun 2001 |
| 2612 | M.T.M. Petroleum | | Oil & Gas Operator | Oct 1995 |
| 2613 | Mach Petroleum, Inc. | Tulsa, OK 74153 | Oil & Gas Operator | Nov 2014 |
| 2614 | Macha Enterprises, Inc. | Wichita Falls, TX 76309 | Oil Operator | May 2024 |
| 2615 | Mack Energy Co. | Duncan, OK 73534 | Oil & Gas Operator | Feb 2024 |
| 2616 | Mack Energy Comp | | Oil & Gas Operator | Nov 1994 |
| 2617 | Maco Incorporate | | Oil Operator | Jun 1984 |
| 2618 | Mad Dog Oil Co. | | Oil Operator | Mar 2016 |
| 2619 | Magnatex Petrole | | Oil Operator | Jun 1994 |
| 2620 | Magnatex Petroleum | | Oil Operator | Apr 1993 |
| 2621 | Magnum Engineering Company | Corpus Chrsti, TX 78401 | Oil & Gas Operator | May 2024 |
| 2622 | Magnum Exploration Kansas, LLC | Lipan, TX 76462 | Oil Operator | Oct 2016 |
| 2623 | Magnum Oil & Gas | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2000 |
| 2624 | Magnusson Karl E | | Oil Operator | Apr 1987 |
| 2625 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Jan 2024 |
| 2626 | Mai Operations | | Oil Operator | Dec 1996 |
| 2627 | Major Oil Compan | | Oil Operator | Mar 1988 |
| 2628 | Mak Oil & Gas Co | | Oil Operator | Mar 2009 |
| 2629 | Malone Donald J | | Oil Operator | Nov 1993 |
| 2630 | Malone Oil Co. | | Oil & Gas Operator | Jul 2006 |
| 2631 | Malone Oil Compa | | Oil Operator | Dec 1994 |
| 2632 | Manning, Gregory | Ellinwood, KS 67526 | Oil Operator | Jan 2024 |
| 2633 | Manns' Atp, Inc. | Potwin, KS 67123 | Oil Operator | Nov 2019 |
| 2634 | Manta Petroleum, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Jun 2020 |
| 2635 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Jan 2024 |
| 2636 | Maple Leaf Energ | | Oil & Gas Operator | Sep 1989 |
| 2637 | Mar-Lou Oil Co., LLC | Wilson, KS 67490 | Oil Operator | Jan 2024 |
| 2638 | Marathon Oil Co.-Rocky Mountain Region | Cody, WY 82414 | Oil Operator | Dec 1999 |
| 2639 | Marathon Oil Com | | Oil & Gas Operator | Dec 1996 |
| 2640 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Mar 2024 |
| 2641 | Marco Oil Compan | | Oil & Gas Operator | Aug 1992 |
| 2642 | Marco Oil Company LLC | Bartlesville, OK 74005 | Oil & Gas Operator | Jan 2024 |
| 2643 | Marden Producing Company | Edmond, OK 73083 | Gas Operator | Jan 2024 |
| 2644 | Marexco | | Oil & Gas Operator | Nov 1994 |
| 2645 | Marexco, Inc. | Castle Rock, CO 80104 | Oil & Gas Operator | May 2024 |
| 2646 | Mariah Exploration LLC | Pawhuska, OK 74056 | Oil & Gas Operator | Oct 2008 |
| 2647 | Mariah Operating Company, LLC | Denver, CO 80201 | Oil & Gas Operator | Dec 2009 |
| 2648 | Marjo Incorporat | | Oil & Gas Operator | Jun 1990 |
| 2649 | Mark III Oil, Inc. | Wichita, KS 67206 | Oil Operator | Dec 2009 |
| 2650 | Mark Oil, Inc. | Chanute, KS 66720 | Oil Operator | May 2023 |
| 2651 | Markan Oil Incor | | Oil Operator | Mar 1991 |
| 2652 | Marker Oil Compa | | Oil Operator | Jul 1985 |
| 2653 | Marlin Oil Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Jan 2024 |
| 2654 | Marmac Petroleum | | Oil & Gas Operator | Oct 1994 |
| 2655 | Marmac Petroleum Company | Denver, CO 80222 | Oil Operator | Apr 1998 |
| 2656 | Marmik Oil Compa | | Oil Operator | Jun 1995 |
| 2657 | Marmik Oil Company | El Dorado, AR 71730 | Oil & Gas Operator | Jan 2015 |
| 2658 | Marrs, Richard L.(Deceased) | Arkansas City, KS 67005 | Oil & Gas Operator | Feb 2013 |
| 2659 | Marsh Operating Company | Dallas, TX 75221 | Oil & Gas Operator | Jan 2024 |
| 2660 | Marshall Lew L O | | Oil Operator | Jun 1994 |
| 2661 | Marshall Oil, LLC | Eureka, KS 67045 | Oil Operator | Jan 2024 |
| 2662 | Marshel Inv | | Oil Operator | Oct 1991 |
| 2663 | Martec Petroleum | | Oil Operator | Jan 1984 |
| 2664 | Martin J S Oil O | | Oil & Gas Operator | Apr 1991 |
| 2665 | Martin Oil LLC | Madison, KS 66860 | Oil Operator | Dec 2023 |
| 2666 | Martin Oil Produ | | Oil & Gas Operator | Dec 1994 |
| 2667 | Martin Oil Producers, Inc. | Garland, TX 75046 | Oil & Gas Operator | Aug 2013 |
| 2668 | Martin Oil Properties | | Oil Operator | Dec 2009 |
| 2669 | Martin Phillips | | Oil Operator | Dec 1987 |
| 2670 | Martin, Bob | Wann, OK 74083 | Oil & Gas Operator | Sep 2007 |
| 2671 | Martin, Dail D. | Madison, KS 66860 | Oil Operator | Dec 2019 |
| 2672 | Martin, Philip H. | Ellis, KS 67637 | Oil Operator | Apr 2000 |
| 2673 | Martindale Enter | | Oil & Gas Operator | Oct 1996 |
| 2674 | Masek Oil Compan | | Oil Operator | Feb 1984 |
| 2675 | Massey, Gary R. | Eureka, KS 67045 | Oil Operator | Dec 2023 |
| 2676 | Mastel, Francis E. | Rantoul, KS 66079 | Oil Operator | Oct 2009 |
| 2677 | Matador Exploration, Inc. | Sedan, KS 67361 | Oil Operator | Apr 2001 |
| 2678 | Matador, Inc. | Sedan, KS 67361 | Oil Operator | Sep 2023 |
| 2679 | Matlock, Randall K. | Topeka, KS 66607 | Oil Operator | May 2000 |
| 2680 | Mattingly, Inc. | Wichita, KS 67226 | Gas Operator | Jun 2011 |
| 2681 | Matuk, Edward C. | Neodesha, KS 66757 | Oil Operator | Aug 1989 |
| 2682 | Mauslein, Lenore | Wellsville, KS 66092 | Oil Operator | Oct 2001 |
| 2683 | Maverick Oil Co. | Richland, TX 76681 | Oil Operator | May 2024 |
| 2684 | Max Oil Company | | Oil & Gas Operator | Aug 2021 |
| 2685 | Max Oil LLC | Andover, KS 67002 | Oil Operator | Dec 2019 |
| 2686 | Max Papay LLC | Meade, KS 67864 | Oil & Gas Operator | Jun 2018 |
| 2687 | Maxam Incorporat | | Oil Operator | Jun 1991 |
| 2688 | Maxcrude, LLC | Winfield, KS 67156 | Oil & Gas Operator | Jan 2024 |
| 2689 | Maxus Exploratio | | Oil Operator | Jun 1991 |
| 2690 | Maxwell Operating Co., Inc. | Englewood, CO 80155 | Oil Operator | Jan 2007 |
| 2691 | Mayhew Properties | | Gas Operator | Jan 2024 |
| 2692 | Mays Oil LLC | | Oil Operator | Apr 2021 |
| 2693 | Mays, Sam W., Jr. Estate | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2005 |
| 2694 | MB Holdings LLC | Independence, KS 67301 | Oil Operator | Jan 2024 |
| 2695 | MBR Resources, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | May 2024 |
| 2696 | MC C Oil Co Inc | Sedan, KS 67361 | Oil Operator | Apr 2016 |
| 2697 | McCandless Rober | | Oil & Gas Operator | May 1991 |
| 2698 | McCann Drilling | | Oil & Gas Operator | Oct 1996 |
| 2699 | McCann Drilling, Inc. | Bartlesville, OK 74003 | Oil Operator | Mar 2011 |
| 2700 | McCann Mark Wind | | Oil & Gas Operator | Dec 1994 |