| 2801 | McMullin, Douglas | Wellsville, KS 66092 | Oil Operator | Apr 2026 |
| 2802 | McNeish Oil Oper | | Oil & Gas Operator | Feb 1991 |
| 2803 | McNeish Oil Operations | | Oil Operator | Nov 2019 |
| 2804 | McNic Oil & Gas Midcontinent,Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 1999 |
| 2805 | McNown, Carl H. | Moline, KS 67353 | Oil Operator | Jun 2021 |
| 2806 | McPherson Drilling | | Oil Operator | Jun 2015 |
| 2807 | McPherson Drilling Co. | | Oil Operator | Jan 1998 |
| 2808 | McQueeney, John J. | Osawatomie, KS 66064 | Oil Operator | Jan 1985 |
| 2809 | McRae, William R. | Scottsdale, AZ 85254 | Oil Operator | Aug 1995 |
| 2810 | Mdopps, LLC | Wichita, KS 67203 | Oil Operator | Apr 2023 |
| 2811 | Mears, John C. | Chanute, KS 66720 | Oil Operator | Dec 2017 |
| 2812 | Medicine Bow Operating Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2014 |
| 2813 | Medlen, Dean S. | Rantoul, KS 66079 | Oil Operator | Aug 1993 |
| 2814 | Mega Petroleum C | | Oil Operator | Jun 1990 |
| 2815 | Meier Joe Oil Op | | Oil Operator | Jul 1983 |
| 2816 | Melland Drilling | | Oil Operator | Nov 1992 |
| 2817 | Melrose Group In | | Oil Operator | Feb 1994 |
| 2818 | Melton, Kenneth | Wann, OK 74083 | Oil Operator | Apr 2026 |
| 2819 | Meltzer Oil Comp | | Oil Operator | Dec 1983 |
| 2820 | Mem Partnership LP, A General Partnership | Spring, TX 77393 | Oil Operator | Apr 2026 |
| 2821 | Mercer Oil And Gas Co Inc | Norman, OK 73070 | Oil & Gas Operator | Apr 2015 |
| 2822 | Meredith Enterprises | | Oil Operator | Jun 1988 |
| 2823 | Meridian Energy Inc. | | Oil Operator | Apr 2026 |
| 2824 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Sep 2026 |
| 2825 | Merit Energy Company, LLC | Dallas, TX 75240 | Oil & Gas Operator | Apr 2026 |
| 2826 | Merrick Oil & Gas | | Oil & Gas Operator | Apr 2026 |
| 2827 | Merrico Resource | | Oil Operator | Dec 1996 |
| 2828 | Merritt Oil Comp | | Oil Operator | Jan 1990 |
| 2829 | Mesa Operating Co. | Irving, TX 75039 | Oil & Gas Operator | Aug 1997 |
| 2830 | Mesa Operating L | | Oil & Gas Operator | Dec 1996 |
| 2831 | Mesa Petroleum C | | Oil & Gas Operator | Dec 1986 |
| 2832 | Messenger Petroleum, Inc. | Kingman, KS 67068 | Oil & Gas Operator | Apr 2026 |
| 2833 | Messman Corporation | Wichita, KS 67208 | Oil & Gas Operator | Apr 2026 |
| 2834 | Messman-Rinehart | | Oil & Gas Operator | Mar 1991 |
| 2835 | Metro Energy Group, Inc. | Bossier City, LA 71112 | Oil & Gas Operator | May 2013 |
| 2836 | Metro Energy, Inc. | Gladstone, MO 64118 | Oil Operator | May 1997 |
| 2837 | Metro Oil Compan | | Oil Operator | Jan 1991 |
| 2838 | Mewbourne Oil Company | Tyler, TX 75711 | Oil & Gas Operator | Sep 2026 |
| 2839 | Meyer Douglas P | Longmont, CO 80501 | Oil & Gas Operator | Aug 2006 |
| 2840 | Meyer, Norbert | Conway Springs, KS 67031 | Oil Operator | Aug 1994 |
| 2841 | Meyer, Theodore J. | Conway Springs, KS 67031 | Oil Operator | Apr 2026 |
| 2842 | Mica Energy Corp | Lincoln, NE 68516 | Oil & Gas Operator | Dec 2010 |
| 2843 | Michael D. Traylor LLC | El Dorado, KS 67042 | Oil Operator | Apr 2026 |
| 2844 | Michael D. Weilert Oil Company | | Oil Operator | Apr 2026 |
| 2845 | Michaelis Leo Oi | | Oil Operator | Aug 1991 |
| 2846 | Mico Oil & Gas | Paola, KS 66071 | Oil Operator | Aug 1995 |
| 2847 | Micro Oil, LLC | Casa Grande, AZ 85193 | Oil Operator | Nov 2024 |
| 2848 | Mid America Ener | | Oil Operator | Nov 1993 |
| 2849 | Mid Con Energy Corporation | Fort Scott, KS 66701 | Oil Operator | Dec 2009 |
| 2850 | Mid Continent Resources, Inc. | Houston, TX 77060 | Oil & Gas Operator | Sep 2026 |
| 2851 | Mid Gulf Incorpo | | Oil & Gas Operator | Nov 1993 |
| 2852 | Mid Kansas Explo | | Oil Operator | Apr 1994 |
| 2853 | Mid Kansas Gas Gathering | | Gas Operator | Apr 2026 |
| 2854 | Mid States Energ | | Oil Operator | Aug 1985 |
| 2855 | Mid States Gener | | Oil Operator | Apr 1988 |
| 2856 | Mid Western Oil | | Oil Operator | Oct 1989 |
| 2857 | Mid-America Energy Company, Inc. | Lebanon, MO 65536 | Oil Operator | Jul 2003 |
| 2858 | Mid-American Hyd | | Oil & Gas Operator | Jan 1992 |
| 2859 | Mid-Con Energy Operating, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2026 |
| 2860 | Mid-Continent En | | Oil & Gas Operator | Nov 1995 |
| 2861 | Mid-Continent Energy Corp. | Wichita, KS 67208 | Oil & Gas Operator | Apr 2026 |
| 2862 | Mid-Continent Energy Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2026 |
| 2863 | Mid-Continent Energy, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2020 |
| 2864 | Mid-Continent Re | | Oil & Gas Operator | Jan 1993 |
| 2865 | Mid-Gulf, Inc. | Brenham, TX 77834 | Oil & Gas Operator | Mar 2008 |
| 2866 | Midco Exploration, Inc. | Westmont, IL 60559 | Oil & Gas Operator | Apr 2026 |
| 2867 | Midcontinent Acquisition Properties, Inc. | Oklahoma City, OK 73102 | Gas Operator | Jan 2000 |
| 2868 | Middle Bay Production Co. Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2014 |
| 2869 | Midlands Gas Cor | | Gas Operator | Dec 1996 |
| 2870 | Midnight Energy Operating LLC | Sand Springs, OK 74063 | Oil Operator | Jun 2026 |
| 2871 | Midnight Well Se | | Oil Operator | Sep 1994 |
| 2872 | Midstates Energy Operating, LLC | FT Myers, FL 33912 | Oil Operator | Apr 2026 |
| 2873 | Midway Drilling | | Oil & Gas Operator | Dec 1996 |
| 2874 | Midway Operating Co. | Great Bend, KS 67530 | Oil Operator | Jan 1998 |
| 2875 | Midwest Oil, LLC | Destin, FL 32541 | Oil Operator | Sep 2025 |
| 2876 | Midwest Turf | El Dorado, KS 67042 | Oil Operator | Jun 1998 |
| 2877 | Midwestern Exploration Company | Edmond, OK 73013 | Oil & Gas Operator | May 2025 |
| 2878 | Midwestern Oil C | | Oil & Gas Operator | May 1995 |
| 2879 | Midwestern Suppl | | Oil Operator | Oct 1986 |
| 2880 | Migwis | Great Bend, KS 67530 | Oil Operator | Mar 1988 |
| 2881 | Mike Blaes & Peggy Blaes, A General Partnership | Cherryvale, KS 67335 | Oil Operator | Mar 2025 |
| 2882 | Mike Kelso Oil, Inc. | Chase, KS 67524 | Oil & Gas Operator | Apr 2026 |
| 2883 | Mikol Oil LLC | Hays, KS 67601 | Oil Operator | Apr 2026 |
| 2884 | Milburn, Harold J. | Hutchinson, KS 67502 | Oil & Gas Operator | Sep 2003 |
| 2885 | Millennium Oil & Gas Inc | Dexter, KS 67038 | Oil & Gas Operator | Dec 2025 |
| 2886 | Miller Bros Oil Company, Inc. | Burlington, KS 66839 | Oil Operator | Dec 2009 |
| 2887 | Miller Energy LLC | Garnett, KS 66032 | Oil Operator | May 2026 |
| 2888 | Miller I O Incor | | Oil & Gas Operator | Apr 1991 |
| 2889 | Miller Oil Company, LLC | Chanute, KS 66720 | Oil Operator | Jan 2026 |
| 2890 | Miller, Bobby Elzo | Sedan, KS 67361 | Oil Operator | Dec 2009 |
| 2891 | Miller, Everett E. | Sedan, KS 67361 | Oil & Gas Operator | Sep 1986 |
| 2892 | Miller, James R | Herrington, KS 67449 | Oil Operator | May 2026 |
| 2893 | Miller, Myron R. | Haven, KS 67543 | Oil Operator | Oct 2017 |
| 2894 | Miller, Ralph D. & Faye C. | Cherryvale, KS 67335 | Oil Operator | Apr 2003 |
| 2895 | Miller, Robert A. | Sedan, KS 67361 | Oil Operator | Aug 2022 |
| 2896 | Miller-Becker Enterprises, LLC | Russell, KS 67665 | Oil Operator | Feb 2026 |
| 2897 | Mills, Norman | Lake City, KS 67071 | Oil Operator | Dec 1995 |
| 2898 | Mills, Ralph A. | Louisburg, KS 66053 | Oil Operator | May 1998 |
| 2899 | Minatome Corpora | | Oil & Gas Operator | Sep 1987 |
| 2900 | Minner Oil Field Service | | Oil Operator | Jul 2008 |