| 1 | Nadel And Gussman Rockies, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2012 |
| 2 | Nance Petroleum Corporation | Billings, MT 59103-7168 | Oil & Gas Operator | Nov 2007 |
| 3 | Nanke Energy LLC | Westminster, CO 80234 | Oil & Gas Operator | Jul 2025 |
| 4 | National Energy Group, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 5 | National Fuel Corporation | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Aug 2025 |
| 6 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jun 2024 |
| 7 | National Pride Operating | Parker, CO 80134 | Oil & Gas Operator | Dec 2017 |
| 8 | National Treasure Mines | San Marina, CA 91118 | Oil Operator | Dec 1998 |
| 9 | Natomas North America Inc | | Oil & Gas Operator | Aug 1993 |
| 10 | Natrona County Holdings LLC | Austin, TX 78701 | Oil & Gas Operator | Nov 2020 |
| 11 | Natural Gas Corp Of California | Vernal, UT 84078 | Oil & Gas Operator | Dec 1989 |
| 12 | Natural Gas Processing Company | Worland, WY 82401 | Oil & Gas Operator | Aug 2025 |
| 13 | Natural Resource Corporation | Rock Springs, WY 82901 | Oil & Gas Operator | Sep 1983 |
| 14 | Nautilus Exploration LLC | Denver, CO 80218 | Oil Operator | Mar 2011 |
| 15 | Navigation Powder River LLC | Houston, TX 77024 | Oil & Gas Operator | Aug 2025 |
| 16 | Nearburg Producing Company | Dallas, TX 75380 | Oil & Gas Operator | Oct 2025 |
| 17 | Nella Company LTD | | Oil Operator | Dec 1986 |
| 18 | Nepeco | Byron, WY 82412 | Oil Operator | Aug 2025 |
| 19 | New Era Oil/Preferred Energy | | Oil & Gas Operator | Sep 1993 |
| 20 | New Era Petroleum Inc | Sheridan, WY 82801 | Oil Operator | Aug 2025 |
| 21 | New Horizon Resources LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 22 | Neward Corporation | FT. Worth, TX 76102 | Oil & Gas Operator | Dec 1997 |
| 23 | Newcastle Oil & Gas Inc | | Oil Operator | Dec 1988 |
| 24 | Newfield Production Company | The Woodlands, TX 77380-2764 | Oil & Gas Operator | Jul 2022 |
| 25 | Newman Bros Drilling | | Oil & Gas Operator | Apr 2004 |
| 26 | Newport Gas Partners LLC | Gillette, WY 82716 | Oil & Gas Operator | May 2025 |
| 27 | Newport Oil Corporation | Clearwater, FL 33755 | Oil & Gas Operator | Jul 2011 |
| 28 | Newton Steve Drilling | Worland, WY 82401 | Oil Operator | Apr 2001 |
| 29 | Newwoods Petroleum LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2016 |
| 30 | Nextraction Energy Us Inc | Las Vegas, NV 89169 | Oil & Gas Operator | Feb 2018 |
| 31 | Nicolaysen G G Jr | | Oil & Gas Operator | Dec 1995 |
| 32 | Nicor Exploration | | Oil Operator | Jul 1993 |
| 33 | Nicor Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Jun 1993 |
| 34 | Nielson & Associates Inc | Cody, WY 82414 | Oil & Gas Operator | Feb 2016 |
| 35 | Nielson Capital Partners LLC | Cody, WY 82414 | Oil & Gas Operator | Dec 2014 |
| 36 | Noarko Resources | | Oil & Gas Operator | Mar 1990 |
| 37 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 38 | Nonsuch Natural Gas Inc | Naples, FL 34108 | Oil & Gas Operator | Jun 2025 |
| 39 | Nor-Am Exploration | | Oil Operator | Jun 1981 |
| 40 | Norcen Energy Inc | | Oil Operator | Dec 1989 |
| 41 | Nordstrand Engineering Inc | Houston, TX 77019 | Oil & Gas Operator | Oct 2025 |
| 42 | Nortex Gas & Oil Co | Tulsa, OK 74135 | Oil & Gas Operator | Sep 1993 |
| 43 | North Central Oil Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2005 |
| 44 | North Finn LLC | Casper, WY 82605 | Oil & Gas Operator | Aug 2025 |
| 45 | North Shore Exploration & Prod LLC | Broomfield, CO 80021 | Oil & Gas Operator | Aug 2025 |
| 46 | North Silo Resources LLC | Houston, TX 77055 | Oil & Gas Operator | Aug 2025 |
| 47 | Northern Michigan Expl Co | | Oil & Gas Operator | Jul 1990 |
| 48 | Northern Production Co | Gillette, WY 82717 | Oil & Gas Operator | Apr 2013 |
| 49 | Northern Pump Company | Denver, CO 80202-3130 | Oil & Gas Operator | Feb 2006 |
| 50 | Northstar Operating Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 51 | Northstar Operating Company Of Texas | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 52 | Northwest Energy LLC | Buffalo, WY 82834 | Gas Operator | Jan 2010 |
| 53 | Northwest Exploration | | Oil & Gas Operator | Dec 1984 |
| 54 | Norton Frickey | Lakewood, CO 80215 | Oil & Gas Operator | Dec 2023 |
| 55 | Nova Energy Inc | Casper, WY 82601 | Oil & Gas Operator | Oct 2020 |
| 56 | Nova Petroleum Cororation | | Oil & Gas Operator | Mar 1987 |
| 57 | Nucor Oil & Gas Inc | Riverton, WY 82501 | Oil & Gas Operator | Jul 2025 |