| 2901 | Mishler Oil | | Oil Operator | May 1989 |
| 2902 | Missouri River R | | Gas Operator | Jun 1993 |
| 2903 | Mitchell Energy | | Oil & Gas Operator | Dec 1996 |
| 2904 | Mitchell Wyatt B | | Oil Operator | Aug 1993 |
| 2905 | Miura Petroleum | | Oil Operator | Dec 1992 |
| 2906 | Miura Petroleum Inc | Topeka, KS 66603 | Oil & Gas Operator | May 2006 |
| 2907 | Miway Operations | Russell, KS 67665 | Oil Operator | Aug 1994 |
| 2908 | MJ Energy LLC | Denver, CO 80206 | Oil Operator | Jan 2025 |
| 2909 | MJT Oil | | Oil Operator | Apr 2026 |
| 2910 | MKJ Oil Co LLC | Harper, KS 67058 | Oil & Gas Operator | Apr 2026 |
| 2911 | MLT Energy, LLC | Derby, KS 67037 | Oil Operator | May 2026 |
| 2912 | Mo-Kan Oil Group | St. Louis, MO 63131 | Oil Operator | Sep 2001 |
| 2913 | Mobil Oil Corpor | | Oil & Gas Operator | Dec 1996 |
| 2914 | Mobil Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 2007 |
| 2915 | Moff Oil Company | Pratt, KS 67124 | Gas Operator | Apr 1988 |
| 2916 | Mohawk Petroleum | | Oil & Gas Operator | Jan 1995 |
| 2917 | Mohr, Steve | Maize, KS 67101 | Oil Operator | Aug 2022 |
| 2918 | Molitor Oil, Inc. | Wichita, KS 67205 | Oil & Gas Operator | Apr 2026 |
| 2919 | Molz Oil Company Inc | Kiowa, KS 67070 | Oil & Gas Operator | Jun 2026 |
| 2920 | Monarch Energy C | | Oil Operator | Nov 1987 |
| 2921 | Monarch Energy LLC | Paola, KS 66071 | Oil Operator | Apr 2026 |
| 2922 | Monarch Petroleum Corporation | FT Worth, TX 76102 | Oil & Gas Operator | Dec 2019 |
| 2923 | Monfort, Roy C. | Iola, KS 66749 | Oil & Gas Operator | Sep 1989 |
| 2924 | Monsanto Oil Com | | Oil Operator | Nov 1996 |
| 2925 | Monterey Production Company LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2026 |
| 2926 | Montgomery Count | | Oil Operator | Dec 1992 |
| 2927 | Montgomery Production & Operating LLC | Herington, KS 67449 | Oil & Gas Operator | Apr 2026 |
| 2928 | Monument Resources, Inc. | Castle Rock, CO 80104 | Oil & Gas Operator | Jun 2012 |
| 2929 | Moore, Brent L. | McPherson, KS 67460 | Oil Operator | Dec 1996 |
| 2930 | Moore, Clay (Deceased) | Dallas, TX 75218 | Oil Operator | Sep 2001 |
| 2931 | Moore, Douglas L. | Gridley, KS 66852 | Oil Operator | Jan 2019 |
| 2932 | Mor-Meg Incorpor | | Oil Operator | Dec 1996 |
| 2933 | Moran Oil Enterprises LLC | Seminole, OK 74818 | Oil & Gas Operator | Dec 2019 |
| 2934 | Morgenstern Oil Operations LLC | Ellinwood, KS 67526 | Oil Operator | Apr 2026 |
| 2935 | Morris & Morris | | Oil Operator | Sep 1995 |
| 2936 | Morris Everett E | | Oil & Gas Operator | Feb 1991 |
| 2937 | Morris Oil Operations | | Oil Operator | Apr 2026 |
| 2938 | Morris Richard B | | Oil Operator | Dec 1996 |
| 2939 | Morrison, Mark L. | Yates Center, KS 66783 | Oil Operator | Apr 2026 |
| 2940 | Morrison-Dixon O | | Oil Operator | Oct 1993 |
| 2941 | Morrow, Joe | Farmington, NM 87401 | Oil Operator | Jan 1993 |
| 2942 | Morsey Oil & Gas | | Oil & Gas Operator | Mar 1995 |
| 2943 | Moss Petroleum Company | Dallas, TX 75207 | Oil & Gas Operator | Sep 2026 |
| 2944 | Mountain Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Apr 2013 |
| 2945 | Moylan, Thomas F. | Lacygne, KS 66040 | Oil & Gas Operator | Dec 1993 |
| 2946 | MSG Resources Inc. | Iola, KS 66749 | Oil Operator | Apr 2026 |
| 2947 | MTM Petroleum, Inc. | Kingman, KS 67068 | Oil & Gas Operator | Apr 2026 |
| 2948 | Muegge, Clay A. | Lamont, OK 74643 | Oil Operator | Aug 1991 |
| 2949 | Mueller Oil | | Oil Operator | Apr 2026 |
| 2950 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | May 2026 |
| 2951 | Multiplex Resources, Inc. | Baytown, TX 77521 | Oil Operator | Dec 2009 |
| 2952 | Murchison Oil & | | Oil Operator | Mar 1988 |
| 2953 | Murfin Drilling | | Oil & Gas Operator | Jul 1997 |
| 2954 | Murfin DRLG Co Inc | Wichita, KS 67202 | Oil & Gas Operator | Jun 2026 |
| 2955 | Murjo Oil & Royalty Company | Fort Worth, TX 76121 | Oil & Gas Operator | Dec 2019 |
| 2956 | Murk, James M. | Wheaton, IL 60189 | Gas Operator | Jan 1999 |
| 2957 | Murphy, Charles H. | Altoona, KS 66710 | Oil Operator | Jul 2022 |
| 2958 | Murphy, Earl M. | Madison, KS 66860 | Oil Operator | Jun 1999 |
| 2959 | Murray Oil And Gas LLC | Greensburg, KS 67054 | Oil & Gas Operator | Apr 2026 |
| 2960 | Musgrove Casey O | | Oil Operator | Oct 1993 |
| 2961 | Musgrove Casey Oil | Ponca City, OK 74602-0391 | Oil & Gas Operator | Jun 2017 |
| 2962 | Musgrove Energy Inc | Ponca City, OK 74602 | Oil & Gas Operator | Dec 2025 |
| 2963 | Musgrove Petrole | | Oil & Gas Operator | Dec 1996 |
| 2964 | Musgrove Produci | | Oil Operator | May 1989 |
| 2965 | Musgrove Producing | El Dorado, KS 67042 | Oil Operator | Apr 2001 |
| 2966 | Mustang Drilling | | Oil & Gas Operator | Nov 1996 |
| 2967 | Mustang Drilling, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Aug 2024 |
| 2968 | Mustang Energy Corporation | Hays, KS 67601 | Oil Operator | Apr 2026 |
| 2969 | Mustang Fuel Cor | | Oil & Gas Operator | Dec 1990 |
| 2970 | Mustang Fuel Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2026 |
| 2971 | Mustang Oil & Gas Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2021 |
| 2972 | MV Purchasing LLC | Wichita, KS 67206 | Oil & Gas Operator | Dec 2019 |
| 2973 | MVRC Partnership | Russell, KS 67655 | Oil Operator | Jan 1992 |
| 2974 | MW Oil, Inc | | Oil & Gas Operator | Apr 2026 |
| 2975 | MWK Petroleum, LLC | Augusta, KS 67010 | Oil Operator | Apr 2026 |
| 2976 | Myers Drilling And Exploration Inc. | Sedan, KS 67361 | Oil Operator | Aug 2022 |
| 2977 | Myers Robert W J | | Oil Operator | Jun 1991 |
| 2978 | Myers, Gus & Annie | Sedan, KS 67361 | Oil Operator | Aug 2017 |
| 2979 | N & B Enterprise | | Oil Operator | Nov 1994 |
| 2980 | N & B Enterprises, Inc. | Iola, KS 66749 | Oil & Gas Operator | Apr 2026 |
| 2981 | N & P Enterprises | | Oil Operator | May 1997 |
| 2982 | N & W Enterprises, Inc. | Fort Scott, KS 66701 | Oil Operator | Apr 2026 |
| 2983 | N H Wheless Oil Company | Shreveport, LA 71101 | Gas Operator | Sep 2002 |
| 2984 | N L S Inc | Kimberling City, MO 65686 | Oil & Gas Operator | Aug 2016 |
| 2985 | N-10 Exploration, LLC | Attica, KS 67009 | Oil & Gas Operator | Nov 2025 |
| 2986 | N-A Energy LLC | Arvada, CO 80005 | Oil Operator | Apr 2026 |
| 2987 | N-B Company Inco | | Oil & Gas Operator | Apr 1992 |
| 2988 | N.F. Producers, Inc. | Berthoud, CO 80513 | Oil Operator | Apr 2026 |
| 2989 | Nacogdoches Oil & Gas, LLC | Nacogdoches, TX 75961 | Oil & Gas Operator | Dec 2017 |
| 2990 | Nadel & Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 |
| 2991 | Nadel And Gussman LLC | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2026 |
| 2992 | Nae, Inc. | Kerrville, TX 78028 | Oil Operator | Feb 2026 |
| 2993 | Nairn, Robert | Elkhart, KS 67950 | Gas Operator | Apr 2011 |
| 2994 | Nash Oil & Gas, Inc. | Newton, KS 67114 | Oil & Gas Operator | Apr 2026 |
| 2995 | Nataraja Oil Corporation | Foley, AL 36535 | Oil Operator | Aug 2010 |
| 2996 | National Coopera | | Oil & Gas Operator | Mar 1992 |
| 2997 | National Cooperative Refinery Assoc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 2998 | National Develop | | Oil & Gas Operator | Jan 1990 |
| 2999 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 3000 | National Oil Co Ohio The | Columbus, OH 43215 | Oil & Gas Operator | Sep 1999 |