| 1 | N. E. Loomis | | Oil Operator | Oct 1986 |
| 2 | N. J. Pardue | | Oil & Gas Operator | Jul 1994 |
| 3 | Nacatosh Gas Incorporated | | Oil & Gas Operator | Aug 2013 |
| 4 | Nadel & Gussman-Jetta Oper. Co. | | Oil & Gas Operator | Mar 2012 |
| 5 | Nadel And Gussman Ruston, LLC | | Oil & Gas Operator | Dec 2024 |
| 6 | Nadel And Gussman, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2025 |
| 7 | Nathan C. Hale | | Oil & Gas Operator | Jan 2025 |
| 8 | Nathan Hale Oil Co. | | Oil & Gas Operator | Jan 2025 |
| 9 | Natural Gas Systems, Inc. | | Oil & Gas Operator | Dec 2002 |
| 10 | Nearburg Producing Company | Dallas, TX 75380 | Oil & Gas Operator | Oct 2025 |
| 11 | Nelson Oil & Gas, Inc. | | Oil & Gas Operator | Aug 1995 |
| 12 | Nerco Oil & Gas, Inc. | | Oil & Gas Operator | Dec 1996 |
| 13 | New Century Exploration, Inc. | Spring, TX 77379 | Oil & Gas Operator | Oct 2025 |
| 14 | NGC Energy Co. | | Oil & Gas Operator | May 1989 |
| 15 | Nichols Oil & Gas Corporation | Shreveport, LA 71135 | Oil & Gas Operator | Aug 2003 |
| 16 | Noram Field Services Corp. | | Oil Operator | Apr 1999 |
| 17 | North American Royalties, Inc. | Chattanooga, TN 37408 | Oil & Gas Operator | Oct 2001 |
| 18 | Northeast Resources | | Oil & Gas Operator | Jan 1992 |
| 19 | Northern Energy Management | | Oil & Gas Operator | Nov 2019 |
| 20 | Northla Productions, LLC | | Oil & Gas Operator | Dec 2024 |
| 21 | Northwest Louisiana Production LLC | | Oil & Gas Operator | Dec 2024 |
| 22 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Aug 2025 |