| 1 | N & B Enterprise | | Oil Operator | Nov 1994 |
| 2 | N & B Enterprises, Inc. | Iola, KS 66749 | Oil & Gas Operator | Dec 2025 |
| 3 | N & P Enterprises | | Oil Operator | May 1997 |
| 4 | N & W Enterprises, Inc. | Fort Scott, KS 66701 | Oil Operator | Dec 2025 |
| 5 | N H Wheless Oil Company | Shreveport, LA 71101 | Gas Operator | Sep 2002 |
| 6 | N L S Inc | Kimberling City, MO 65686 | Oil & Gas Operator | Aug 2016 |
| 7 | N-10 Exploration, LLC | Attica, KS 67009 | Oil & Gas Operator | Dec 2025 |
| 8 | N-A Energy LLC | Arvada, CO 80005 | Oil Operator | Dec 2025 |
| 9 | N-B Company Inco | | Oil & Gas Operator | Apr 1992 |
| 10 | N.F. Producers, Inc. | Berthoud, CO 80513 | Oil Operator | Dec 2025 |
| 11 | Nacogdoches Oil & Gas, LLC | Nacogdoches, TX 75961 | Oil & Gas Operator | Dec 2017 |
| 12 | Nadel & Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 |
| 13 | Nadel And Gussman LLC | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2026 |
| 14 | Nae, Inc. | Kerrville, TX 78028 | Oil Operator | Oct 2025 |
| 15 | Nairn, Robert | Elkhart, KS 67950 | Gas Operator | Apr 2011 |
| 16 | Nash Oil & Gas, Inc. | Newton, KS 67114 | Oil & Gas Operator | Dec 2025 |
| 17 | Nataraja Oil Corporation | Foley, AL 36535 | Oil Operator | Aug 2010 |
| 18 | National Coopera | | Oil & Gas Operator | Mar 1992 |
| 19 | National Cooperative Refinery Assoc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 20 | National Develop | | Oil & Gas Operator | Jan 1990 |
| 21 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 22 | National Oil Co Ohio The | Columbus, OH 43215 | Oil & Gas Operator | Sep 1999 |
| 23 | National Oil Com | | Oil & Gas Operator | Oct 1992 |
| 24 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jun 2024 |
| 25 | National Petrole | | Oil & Gas Operator | Dec 1996 |
| 26 | National Petroleum Reserves, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2012 |
| 27 | Natural Capital LLC | Castle Rock, CO 80104 | Oil & Gas Operator | Dec 2009 |
| 28 | Natural Gas Anadarko Company | Perryton, TX 79070 | Oil & Gas Operator | Apr 2026 |
| 29 | Natural Gas Expl | | Oil & Gas Operator | Jul 1990 |
| 30 | Navajo Oil Company | Wichita, KS 67206 | Gas Operator | May 2011 |
| 31 | NC Oil Company, Inc. | Humboldt, KS 66748 | Oil Operator | Nov 2025 |
| 32 | Nec Operating - Kansas, LLC | Southlake, TX 76092 | Oil & Gas Operator | Dec 2025 |
| 33 | Nemaha Ridge, LLC | Coffeyville, KS 67337 | Oil Operator | Aug 2022 |
| 34 | Neo Oilfield Services, LLC | Bristow, OK 74010 | Oil Operator | Oct 2015 |
| 35 | Ness Crude Oil I | | Oil Operator | Mar 1994 |
| 36 | New Age Oil LLC | Hays, KS 67601 | Oil & Gas Operator | Dec 2025 |
| 37 | New Donna Lee Oil Company | Bakersfield, CA 93308 | Oil & Gas Operator | Jul 2025 |
| 38 | New Generation Oil Inc | Russell, KS 67665 | Oil Operator | Feb 2002 |
| 39 | New Gulf Operating LLC | Tulsa, OK 74133 | Oil Operator | Sep 2023 |
| 40 | New Horizon Resources LLC | Houston, TX 77057 | Oil & Gas Operator | Apr 2026 |
| 41 | New London Oil I | | Oil Operator | Dec 1996 |
| 42 | New Western Operating, LLC | Irvine, CA 92618 | Oil & Gas Operator | Dec 2019 |
| 43 | Newfield Exploration Mid-Continent, Inc | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2011 |
| 44 | Newland Oil Comp | | Oil Operator | Sep 1996 |
| 45 | Ney Oil Operations | | Oil Operator | Apr 1998 |
| 46 | Nicholas Water Service, Inc. | Zenda, KS 67159 | Oil Operator | Mar 2006 |
| 47 | Nichols Fluid Service, Inc. | Liberal, KS 67901 | Oil Operator | Jun 2019 |
| 48 | Nichols Oil Corp. | Holcomb, KS 67846 | Oil Operator | Dec 1994 |
| 49 | Nickell & Son Oil & Salvage | Parker, KS 66072 | Oil Operator | Aug 2006 |
| 50 | Nickell Drilling | | Oil Operator | Jun 2010 |
| 51 | Niehage Oil Company, LLC | McPherson, KS 67460 | Oil Operator | Nov 2025 |
| 52 | Nielson Enterpri | | Oil & Gas Operator | Sep 1987 |
| 53 | Nightengale Henr | | Gas Operator | Nov 1996 |
| 54 | Nitcher, Benton L. | Wellsville, KS 66092 | Oil & Gas Operator | Dec 1995 |
| 55 | Nixon R P Operat | | Oil Operator | Aug 1995 |
| 56 | Njre Operating Company | Tulsa, OK 74119 | Gas Operator | Dec 2016 |
| 57 | Noah, Calvin | Valley Center, KS 67147 | Oil Operator | Oct 2010 |
| 58 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Apr 2026 |
| 59 | Noble Petroleum, Inc. | Wichita, KS 67205 | Oil Operator | Sep 2013 |
| 60 | Noir-Blanc | Russell, KS 67665 | Oil Operator | May 1992 |
| 61 | Nondorf Oil & Ga | | Oil Operator | Dec 1986 |
| 62 | Nor-West Kansas Oil, L.L.C. | Wakeeney, KS 67672 | Oil Operator | Dec 2019 |
| 63 | Nordmeyer Oil, Inc. | Toronto, KS 66777 | Oil Operator | Dec 2019 |
| 64 | Nordstrand/Galoostian Oil & Gas | Houston, TX 77056 | Oil Operator | Mar 1998 |
| 65 | Norstar Development | Madras, OR 97741 | Oil Operator | Nov 2018 |
| 66 | Norstar Petroleu | | Oil & Gas Operator | Dec 1996 |
| 67 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Dec 2025 |
| 68 | North American D | | Oil & Gas Operator | Sep 1986 |
| 69 | North American Drilling & Exploration, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Aug 2015 |
| 70 | North American Resources Company | Billings, MT 59101 | Oil & Gas Operator | Dec 2019 |
| 71 | North Pacific Oil And Gas, Inc | Houston, TX 77042 | Oil Operator | Mar 2013 |
| 72 | North Plains Corp | Tulsa, OK 74137 | Oil & Gas Operator | Dec 2025 |
| 73 | North Plains Oil | | Oil Operator | Jul 1990 |
| 74 | Northern Gas Pro | | Gas Operator | Jun 1994 |
| 75 | Northern Lights | | Oil & Gas Operator | Apr 1993 |
| 76 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Dec 2025 |
| 77 | Northern Natural Gas Prod | | Gas Operator | Oct 1989 |
| 78 | Northern Pump Company | Denver, CO 80202-3130 | Oil & Gas Operator | Feb 2006 |
| 79 | Northstar Investments, Inc. | Wichita, KS 67230 | Oil & Gas Operator | Dec 2025 |
| 80 | Northwest Well Service, Inc. | Merino, CO 80741 | Oil Operator | Mar 2002 |
| 81 | Norwood Oil | Greeley, CO 80634 | Oil Operator | Mar 1996 |
| 82 | Nott, Gregory | Wichita, KS 67214 | Oil Operator | Dec 2025 |
| 83 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Feb 2026 |
| 84 | Noxxe | Ottawa, KS 66067 | Oil & Gas Operator | Dec 2024 |
| 85 | NPF Energy Corporation | Boise, ID 83708 | Oil & Gas Operator | Dec 2025 |
| 86 | NRD - Rein Resources, A General Partnership | Union, KY 41091 | Oil Operator | Dec 2025 |
| 87 | Numac LLC | Cherryvale, KS 67335 | Oil Operator | Jun 2025 |
| 88 | Nuss Oil Operations | | Oil & Gas Operator | Aug 1998 |
| 89 | Nuss Sally | | Oil Operator | Mar 1982 |
| 90 | Nuss, Fred J. | Hoisington, KS 67544 | Gas Operator | Dec 2025 |
| 91 | Nuss, Kenneth J. | Russell, KS 67665 | Oil Operator | Aug 1997 |