| 3001 | MW Oil, Inc | | Oil & Gas Operator | Mar 2025 |
| 3002 | MWK Petroleum, LLC | Augusta, KS 67010 | Oil Operator | Mar 2025 |
| 3003 | Myers Drilling And Exploration Inc. | Sedan, KS 67361 | Oil Operator | Aug 2022 |
| 3004 | Myers Robert W J | | Oil Operator | Jun 1991 |
| 3005 | Myers, Gus & Annie | Sedan, KS 67361 | Oil Operator | Aug 2017 |
| 3006 | N & B Enterprise | | Oil Operator | Nov 1994 |
| 3007 | N & B Enterprises, Inc. | Iola, KS 66749 | Oil & Gas Operator | Mar 2025 |
| 3008 | N & P Enterprises | | Oil Operator | May 1997 |
| 3009 | N & W Enterprises, Inc. | Fort Scott, KS 66701 | Oil Operator | Mar 2025 |
| 3010 | N H Wheless Oil Company | Shreveport, LA 71101 | Gas Operator | Sep 2002 |
| 3011 | N-10 Exploration, LLC | Attica, KS 67009 | Oil & Gas Operator | Mar 2025 |
| 3012 | N-A Energy LLC | Arvada, CO 80005 | Oil Operator | Mar 2025 |
| 3013 | N-B Company Inco | | Oil & Gas Operator | Apr 1992 |
| 3014 | N.F. Producers, Inc. | Berthoud, CO 80513 | Oil Operator | Mar 2025 |
| 3015 | N.L.S., Inc. | Kimberling City, MO 65686 | Oil & Gas Operator | Aug 2016 |
| 3016 | Nacogdoches Oil & Gas, LLC | Nacogdoches, TX 75961 | Oil & Gas Operator | Dec 2017 |
| 3017 | Nadel And Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 |
| 3018 | Nadel And Gussman, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Jul 2025 |
| 3019 | Nae, Inc. | Kerrville, TX 78028 | Oil Operator | Jan 2025 |
| 3020 | Nairn, Robert | Elkhart, KS 67950 | Gas Operator | Apr 2011 |
| 3021 | Nash Oil & Gas, Inc. | Newton, KS 67114 | Oil & Gas Operator | Mar 2025 |
| 3022 | Nataraja Oil Corporation | Foley, AL 36535 | Oil Operator | Aug 2010 |
| 3023 | National Coopera | | Oil & Gas Operator | Mar 1992 |
| 3024 | National Cooperative Refinery Assoc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 3025 | National Develop | | Oil & Gas Operator | Jan 1990 |
| 3026 | National Energy Group, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 3027 | National Oil Com | | Oil & Gas Operator | Oct 1992 |
| 3028 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jun 2024 |
| 3029 | National Oil Company (Ohio) The | Columbus, OH 43215 | Oil & Gas Operator | Sep 1999 |
| 3030 | National Petrole | | Oil & Gas Operator | Dec 1996 |
| 3031 | National Petroleum Reserves, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2012 |
| 3032 | Natural Capital LLC | Castle Rock, CO 80104 | Oil & Gas Operator | Dec 2009 |
| 3033 | Natural Gas & Oi | | Gas Operator | Dec 1987 |
| 3034 | Natural Gas Anadarko Company | Perryton, TX 79070 | Oil & Gas Operator | Jul 2025 |
| 3035 | Natural Gas Expl | | Oil & Gas Operator | Jul 1990 |
| 3036 | Navajo Oil Company | Wichita, KS 67206 | Gas Operator | May 2011 |
| 3037 | NC Oil Company, Inc. | Humboldt, KS 66748 | Oil Operator | Mar 2025 |
| 3038 | Nec Operating - Kansas, LLC | Southlake, TX 76092 | Oil & Gas Operator | Mar 2025 |
| 3039 | Nemaha Ridge, LLC | Coffeyville, KS 67337 | Oil Operator | Aug 2022 |
| 3040 | Neo Oilfield Services, LLC | Bristow, OK 74010 | Oil Operator | Oct 2015 |
| 3041 | Ness Crude Oil I | | Oil Operator | Mar 1994 |
| 3042 | New Age Oil LLC | Hays, KS 67601 | Oil & Gas Operator | Mar 2025 |
| 3043 | New Donna Lee Oil Company | Bakersfield, CA 93308 | Oil & Gas Operator | Jan 2025 |
| 3044 | New Generation Oil Inc | Russell, KS 67665 | Oil Operator | Feb 2002 |
| 3045 | New Gulf Operating LLC | Tulsa, OK 74133 | Oil Operator | Sep 2023 |
| 3046 | New Horizon Resources LLC | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 3047 | New London Oil I | | Oil Operator | Dec 1996 |
| 3048 | New Western Operating, LLC | Irvine, CA 92618 | Oil & Gas Operator | Dec 2019 |
| 3049 | Newfield Exploration Mid-Continent Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2011 |
| 3050 | Newland Oil Comp | | Oil Operator | Sep 1996 |
| 3051 | Ney Oil Operations | | Oil Operator | Apr 1998 |
| 3052 | Nicholas Water Service, Inc. | Zenda, KS 67159 | Oil Operator | Mar 2006 |
| 3053 | Nichols Fluid Service, Inc. | Liberal, KS 67901 | Oil Operator | Jun 2019 |
| 3054 | Nichols Oil Corp. | Holcomb, KS 67846 | Oil Operator | Dec 1994 |
| 3055 | Nickell & Son Oil & Salvage | Parker, KS 66072 | Oil Operator | Aug 2006 |
| 3056 | Nickell Drilling | | Oil Operator | Jun 2010 |
| 3057 | Niehage Oil Company, LLC | McPherson, KS 67460 | Oil Operator | Mar 2025 |
| 3058 | Nielson Enterpri | | Oil & Gas Operator | Sep 1987 |
| 3059 | Nightengale Henr | | Gas Operator | Nov 1996 |
| 3060 | Nitcher, Benton L. | Wellsville, KS 66092 | Oil & Gas Operator | Dec 1995 |
| 3061 | Nixon R P Operat | | Oil Operator | Aug 1995 |
| 3062 | Njre Operating Company | Tulsa, OK 74119 | Gas Operator | Dec 2016 |
| 3063 | Noah, Calvin | Valley Center, KS 67147 | Oil Operator | Oct 2010 |
| 3064 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
| 3065 | Noble Petroleum, Inc. | Wichita, KS 67205 | Oil Operator | Sep 2013 |
| 3066 | Noir-Blanc | Russell, KS 67665 | Oil Operator | May 1992 |
| 3067 | Nondorf Oil & Ga | | Oil Operator | Dec 1986 |
| 3068 | Nor-West Kansas Oil, L.L.C. | Wakeeney, KS 67672 | Oil Operator | Dec 2019 |
| 3069 | Nordmeyer Oil, Inc. | Toronto, KS 66777 | Oil Operator | Dec 2019 |
| 3070 | Nordstrand/Galoostian Oil & Gas | Houston, TX 77056 | Oil Operator | Mar 1998 |
| 3071 | Norstar Development | Madras, OR 97741 | Oil Operator | Nov 2018 |
| 3072 | Norstar Petroleu | | Oil & Gas Operator | Dec 1996 |
| 3073 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Mar 2025 |
| 3074 | North American D | | Oil & Gas Operator | Sep 1986 |
| 3075 | North American Drilling & Exploration, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Aug 2015 |
| 3076 | North American Resources Company | Billings, MT 59101 | Oil & Gas Operator | Dec 2019 |
| 3077 | North Pacific Oil And Gas, Inc | Houston, TX 77042 | Oil Operator | Mar 2013 |
| 3078 | North Plains Corp | Tulsa, OK 74137 | Oil & Gas Operator | Mar 2025 |
| 3079 | North Plains Oil | | Oil Operator | Jul 1990 |
| 3080 | Northern Gas Pro | | Gas Operator | Jun 1994 |
| 3081 | Northern Lights | | Oil & Gas Operator | Apr 1993 |
| 3082 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Mar 2025 |
| 3083 | Northern Natural Gas Prod | | Gas Operator | Oct 1989 |
| 3084 | Northern Pump Company | Denver, CO 80202-3130 | Oil & Gas Operator | Feb 2006 |
| 3085 | Northstar Investments, Inc. | Wichita, KS 67230 | Oil & Gas Operator | Mar 2025 |
| 3086 | Northwest Well Service, Inc. | Merino, CO 80741 | Oil Operator | Mar 2002 |
| 3087 | Norwood Oil | Greeley, CO 80634 | Oil Operator | Mar 1996 |
| 3088 | Nott, Gregory | Wichita, KS 67214 | Oil Operator | Mar 2025 |
| 3089 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Jun 2025 |
| 3090 | Noxxe | Ottawa, KS 66067 | Oil & Gas Operator | Dec 2023 |
| 3091 | NPF Energy Corporation | Boise, ID 83708 | Oil & Gas Operator | Mar 2025 |
| 3092 | NRD - Rein Resources, A General Partnership | Union, KY 41091 | Oil Operator | Mar 2025 |
| 3093 | Numac LLC | Cherryvale, KS 67335 | Oil Operator | Dec 2024 |
| 3094 | Nuss Oil Operations | | Oil & Gas Operator | Aug 1998 |
| 3095 | Nuss Sally | | Oil Operator | Mar 1982 |
| 3096 | Nuss, Fred J. | Hoisington, KS 67544 | Gas Operator | Mar 2025 |
| 3097 | Nuss, Kenneth J. | Russell, KS 67665 | Oil Operator | Aug 1997 |
| 3098 | O S & J Operatin | | Oil Operator | Nov 1984 |
| 3099 | O'Brien Energy Company | Shreveport, LA 71136 | Oil & Gas Operator | Sep 2019 |
| 3100 | O'Brien Energy Resources Corp | Portsmouth, NH 03801 | Oil & Gas Operator | Jul 2025 |