| 2901 | MW Oil, Inc | | Oil Operator | Jan 2024 |
| 2902 | MWK Petroleum, LLC | Augusta, KS 67010 | Oil Operator | Jan 2024 |
| 2903 | Myers Drilling And Exploration Inc. | Sedan, KS 67361 | Oil Operator | Aug 2022 |
| 2904 | Myers Robert W J | | Oil Operator | Jun 1991 |
| 2905 | Myers, Gus & Annie | Sedan, KS 67361 | Oil Operator | Aug 2017 |
| 2906 | N & B Enterprise | | Oil Operator | Nov 1994 |
| 2907 | N & B Enterprises, Inc. | Iola, KS 66749 | Oil & Gas Operator | Jan 2024 |
| 2908 | N & P Enterprises | | Oil Operator | May 1997 |
| 2909 | N & W Enterprises, Inc. | Fort Scott, KS 66701 | Oil Operator | Jan 2024 |
| 2910 | N H Wheless Oil Company | Shreveport, LA 71101 | Gas Operator | Sep 2002 |
| 2911 | N-10 Exploration, LLC | Attica, KS 67009 | Oil & Gas Operator | Jan 2024 |
| 2912 | N-A Energy LLC | Arvada, CO 80005 | Oil Operator | Jan 2024 |
| 2913 | N-B Company Inco | | Oil & Gas Operator | Apr 1992 |
| 2914 | N.F. Producers, Inc. | Berthoud, CO 80513 | Oil Operator | Jan 2024 |
| 2915 | N.L.S., Inc. | Kimberling City, MO 65686 | Oil & Gas Operator | Aug 2016 |
| 2916 | Nacogdoches Oil & Gas, LLC | Nacogdoches, TX 75961 | Oil & Gas Operator | Dec 2017 |
| 2917 | Nadel And Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 |
| 2918 | Nadel And Gussman, L.L.C. | Tulsa, OK 74103 | Oil & Gas Operator | May 2024 |
| 2919 | Nae, Inc. | Kerrville, TX 78028 | Oil Operator | Aug 2023 |
| 2920 | Nairn, Robert | Elkhart, KS 67950 | Gas Operator | Apr 2011 |
| 2921 | Nash Oil & Gas, Inc. | Newton, KS 67114 | Oil & Gas Operator | Jan 2024 |
| 2922 | Nataraja Oil Corporation | Foley, AL 36535 | Oil Operator | Aug 2010 |
| 2923 | National Coopera | | Oil & Gas Operator | Mar 1992 |
| 2924 | National Cooperative Refinery Assoc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 2925 | National Develop | | Oil & Gas Operator | Jan 1990 |
| 2926 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 2927 | National Oil Com | | Oil & Gas Operator | Oct 1992 |
| 2928 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jan 2024 |
| 2929 | National Oil Company (Ohio) The | Columbus, OH 43215 | Oil & Gas Operator | Sep 1999 |
| 2930 | National Petrole | | Oil & Gas Operator | Dec 1996 |
| 2931 | National Petroleum Reserves, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2012 |
| 2932 | Natural Capital LLC | Castle Rock, CO 80104 | Oil & Gas Operator | Dec 2009 |
| 2933 | Natural Gas Anadarko Company | Perryton, TX 79070 | Oil & Gas Operator | May 2024 |
| 2934 | Natural Gas Expl | | Oil & Gas Operator | Jul 1990 |
| 2935 | NC Oil Company, Inc. | Humboldt, KS 66748 | Oil Operator | Dec 2023 |
| 2936 | Nec Operating - Kansas, LLC | Southlake, TX 76092 | Oil & Gas Operator | Jan 2024 |
| 2937 | Nemaha Ridge, LLC | Coffeyville, KS 67337 | Oil Operator | Aug 2022 |
| 2938 | Neo Oilfield Services, LLC | Bristow, OK 74010 | Oil Operator | Oct 2015 |
| 2939 | Ness Crude Oil I | | Oil Operator | Mar 1994 |
| 2940 | New Age Oil LLC | Hays, KS 67601 | Oil & Gas Operator | Jan 2024 |
| 2941 | New Donna Lee Oil Company | Bakersfield, CA 93308 | Oil & Gas Operator | Dec 2009 |
| 2942 | New Generation Oil Inc | Russell, KS 67665 | Oil Operator | Feb 2002 |
| 2943 | New Gulf Operating LLC | Tulsa, OK 74133 | Oil Operator | Sep 2023 |
| 2944 | New Horizon Resources LLC | Houston, TX 77057 | Oil & Gas Operator | May 2024 |
| 2945 | New London Oil I | | Oil Operator | Dec 1996 |
| 2946 | New Western Operating, LLC | Irvine, CA 92618 | Oil & Gas Operator | Dec 2019 |
| 2947 | Newfield Exploration Mid-Continent Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2011 |
| 2948 | Newland Oil Comp | | Oil Operator | Sep 1996 |
| 2949 | Ney Oil Operations | | Oil Operator | Apr 1998 |
| 2950 | Nicholas Water Service, Inc. | Zenda, KS 67159 | Oil Operator | Mar 2006 |
| 2951 | Nichols Fluid Service, Inc. | Liberal, KS 67901 | Oil Operator | Jun 2019 |
| 2952 | Nichols Oil Corp. | Holcomb, KS 67846 | Oil Operator | Dec 1994 |
| 2953 | Nickell & Son Oil & Salvage | Parker, KS 66072 | Oil Operator | Aug 2006 |
| 2954 | Nickell Drilling | | Oil Operator | Jun 2010 |
| 2955 | Niehage Oil Company, LLC | McPherson, KS 67460 | Oil Operator | Jan 2024 |
| 2956 | Nielson Enterpri | | Oil & Gas Operator | Sep 1987 |
| 2957 | Nitcher, Benton L. | Wellsville, KS 66092 | Oil & Gas Operator | Dec 1995 |
| 2958 | Nixon R P Operat | | Oil Operator | Aug 1995 |
| 2959 | Njre Operating Company | Tulsa, OK 74119 | Gas Operator | Dec 2016 |
| 2960 | Noah, Calvin | Valley Center, KS 67147 | Oil Operator | Oct 2010 |
| 2961 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | May 2024 |
| 2962 | Noble Petroleum, Inc. | Wichita, KS 67205 | Oil Operator | Sep 2013 |
| 2963 | Noir-Blanc | Russell, KS 67665 | Oil Operator | May 1992 |
| 2964 | Nondorf Oil & Ga | | Oil Operator | Dec 1986 |
| 2965 | Nor-West Kansas Oil, L.L.C. | Wakeeney, KS 67672 | Oil Operator | Dec 2019 |
| 2966 | Nordmeyer Oil, Inc. | Toronto, KS 66777 | Oil Operator | Dec 2019 |
| 2967 | Nordstrand/Galoostian Oil & Gas | Houston, TX 77056 | Oil Operator | Mar 1998 |
| 2968 | Norstar Development | Madras, OR 97741 | Oil Operator | Nov 2018 |
| 2969 | Norstar Petroleu | | Oil & Gas Operator | Dec 1996 |
| 2970 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Jan 2024 |
| 2971 | North American D | | Oil & Gas Operator | Sep 1986 |
| 2972 | North American Drilling & Exploration, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Aug 2015 |
| 2973 | North American Resources Company | Billings, MT 59101 | Oil & Gas Operator | Dec 2019 |
| 2974 | North Pacific Oil And Gas, Inc | Houston, TX 77042 | Oil Operator | Mar 2013 |
| 2975 | North Plains Corp | Tulsa, OK 74137 | Oil & Gas Operator | Jan 2024 |
| 2976 | North Plains Oil | | Oil Operator | Jul 1990 |
| 2977 | Northern Lights | | Oil & Gas Operator | Apr 1993 |
| 2978 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Jan 2024 |
| 2979 | Northern Natural Gas Prod | | Gas Operator | Oct 1989 |
| 2980 | Northern Pump Company | Denver, CO 80202-3130 | Oil & Gas Operator | Feb 2006 |
| 2981 | Northstar Investments, Inc. | Wichita, KS 67230 | Oil & Gas Operator | Jan 2024 |
| 2982 | Northwest Well Service, Inc. | Merino, CO 80741 | Oil Operator | Mar 2002 |
| 2983 | Norwood Oil | Greeley, CO 80634 | Oil Operator | Mar 1996 |
| 2984 | Nott, Gregory | Wichita, KS 67214 | Oil Operator | Jan 2024 |
| 2985 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Feb 2024 |
| 2986 | Noxxe | Ottawa, KS 66067 | Oil & Gas Operator | Dec 2021 |
| 2987 | NPF Energy Corporation | Boise, ID 83708 | Oil & Gas Operator | Jan 2024 |
| 2988 | NRD - Rein Resources, A General Partnership | Union, KY 41091 | Oil Operator | Jan 2024 |
| 2989 | NTR Energy LLC | Caney, KS 67333 | Oil & Gas Operator | Apr 2020 |
| 2990 | Numac LLC | Cherryvale, KS 67335 | Oil Operator | Aug 2023 |
| 2991 | Nuss Oil Operations | | Oil & Gas Operator | Aug 1998 |
| 2992 | Nuss Sally | | Oil Operator | Mar 1982 |
| 2993 | Nuss, Fred J. | Hoisington, KS 67544 | Gas Operator | Jan 2024 |
| 2994 | Nuss, Kenneth J. | Russell, KS 67665 | Oil Operator | Aug 1997 |
| 2995 | O S & J Operatin | | Oil Operator | Nov 1984 |
| 2996 | O'Brien Energy Company | Shreveport, LA 71136 | Oil & Gas Operator | Sep 2019 |
| 2997 | O'Brien Energy Resources Corp | Portsmouth, NH 03801 | Oil & Gas Operator | May 2024 |
| 2998 | O'Brien Resources LLC | Shreveport, LA 71136 | Oil Operator | Nov 2017 |
| 2999 | O'Connell, James P. | Vacaville, CA 95687 | Oil Operator | Nov 2009 |
| 3000 | O'Hare Energy Co | | Oil Operator | Dec 1983 |