| 1 | Nance Petroleum Corporation | Billings, MT 59103-7168 | Oil & Gas Operator | Nov 2007 |
| 2 | Nanke Energy LLC | Westminster, CO 80234 | Oil & Gas Operator | Jul 2025 |
| 3 | National Fuel Corporation | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Aug 2025 |
| 4 | Natural Resource Group Inc | | Oil & Gas Operator | Jan 2024 |
| 5 | New Frontier Energy Inc | | Gas Operator | Mar 2010 |
| 6 | New Horizon Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jun 2006 |
| 7 | Newell Energy LTD | | Gas Operator | Nov 2021 |
| 8 | Newfield Production Company | The Woodlands, TX 77380-2764 | Oil & Gas Operator | Jul 2022 |
| 9 | Nickel Road Operating LLC | | Oil & Gas Operator | Sep 2024 |
| 10 | Nielson & Associates Inc | Cody, WY 82414 | Oil & Gas Operator | Feb 2016 |
| 11 | Nighthawk Production LLC | | Oil & Gas Operator | Jun 2018 |
| 12 | Niobrara Illuminating Gas Associates LLC | | Oil & Gas Operator | Oct 2009 |
| 13 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 14 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Oct 2025 |
| 15 | Nonsuch Natural Gas Inc | Naples, FL 34108 | Oil & Gas Operator | Jun 2025 |
| 16 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Jun 2025 |
| 17 | North American Resources Company | Billings, MT 59101 | Oil & Gas Operator | Dec 2019 |
| 18 | North Shore Exploration & Prod LLC | Broomfield, CO 80021 | Oil & Gas Operator | Aug 2025 |
| 19 | Northern Michigan Oil & Gas Corporation | | Oil & Gas Operator | Aug 2025 |
| 20 | Northstar Gas Company Inc | | Oil & Gas Operator | Jan 2016 |
| 21 | Nova Energy Inc | Casper, WY 82601 | Oil & Gas Operator | Oct 2020 |
| 22 | Nuevida Resources LLC | Dallas, TX 75235 | Gas Operator | Jul 2025 |
| 23 | Nylund* J. W. | | Oil Operator | Jul 2000 |