| 701 | Nueces Minerals Company | Dallas, TX 75251 | Oil & Gas Operator | May 2021 |
| 702 | Nueces Oil Company | George West, TX 78022 | Oil & Gas Operator | Mar 2008 |
| 703 | Nueces Petroleum Corporation | Sugar Land, TX 77496 | Oil Operator | Dec 2025 |
| 704 | Nueces Reserves, Inc. | Houston, TX 77019 | Oil & Gas Operator | Oct 2002 |
| 705 | Nuenergy LLC | | Oil & Gas Operator | Sep 2025 |
| 706 | Nuevida Resources, LLC | Dallas, TX 75235 | Gas Operator | Oct 2025 |
| 707 | Nuevo Energy Company | Houston, TX 77002 | Oil & Gas Operator | Dec 2002 |
| 708 | Nuevo Texas Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2004 |
| 709 | Nuex Operating, Inc. | | Oil Operator | Oct 2004 |
| 710 | Nugulf Operating, L.L.C. | | Oil & Gas Operator | Dec 2024 |
| 711 | Null, W. M. & San Patricio Corp. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Aug 1994 |
| 712 | Null, W.M. Operations, Inc. | Corpus Chrsti, TX 78475 | Oil & Gas Operator | Jun 2002 |
| 713 | Numac LLC | Cherryvale, KS 67335 | Oil Operator | Jun 2025 |
| 714 | Numar Oil And Gas Corporation | Sante Fe, NM 87502 | Oil & Gas Operator | Dec 2025 |
| 715 | Numatex, Inc | | Oil Operator | Dec 2013 |
| 716 | Numen Corporation | | Oil & Gas Operator | Jan 1982 |
| 717 | Nupower Energy, LLC | Houston, TX 77058 | Oil & Gas Operator | Dec 2025 |
| 718 | Nuroc Energy Incorporated | Andrews, TX 79714 | Oil Operator | Nov 2025 |
| 719 | Nuss Oil Operations | | Oil & Gas Operator | Aug 1998 |
| 720 | Nuss Sally | | Oil Operator | Mar 1982 |
| 721 | Nuss, Fred J. | Hoisington, KS 67544 | Gas Operator | Jun 2025 |
| 722 | Nuss, Kenneth J. | Russell, KS 67665 | Oil Operator | Aug 1997 |
| 723 | Nutek Oil Inc | San Antonio, TX 78254 | Oil & Gas Operator | Feb 2006 |
| 724 | Nutt Jerrie | Duncan, OK 73534-0698 | Oil & Gas Operator | Nov 2016 |
| 725 | Nuttco Oil & Gas | Corning, OH 43730 | Oil & Gas Operator | Dec 2010 |
| 726 | Nuwi-Bayshore LLC | | Oil & Gas Operator | Dec 1999 |
| 727 | NV O&G Investments LLC /Osage Only | | Oil Operator | Sep 2022 |
| 728 | NWG Operating LLC | Canyon, TX 79015 | Oil & Gas Operator | Dec 2025 |
| 729 | NWM Operating Inc | Okeene, OK 73763 | Oil & Gas Operator | Oct 2025 |
| 730 | NWM Properties LLC | Tulsa, OK 74131-4426 | Oil Operator | Oct 2025 |
| 731 | Ny Oil Inc. | | Oil Operator | Dec 2025 |
| 732 | Nyc Resources LTD | Tulsa, OK 74133-5700 | Oil & Gas Operator | Sep 2014 |
| 733 | Nye Exploration & Prod, L.L.C. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Dec 2025 |
| 734 | Nye Oil Company | Oklahoma City, OK 73118-1245 | Oil & Gas Operator | Jun 2004 |
| 735 | Nys Natural Gas Co | Englewood, CO 80111-4737 | Gas Operator | Dec 1984 |
| 736 | Nytex Energy LLC | Edmond, OK 73083-5946 | Oil & Gas Operator | Sep 2015 |
| 737 | Nytex Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2014 |
| 738 | Nytex, L.L.C. | Edmond, OK 73083 | Oil & Gas Operator | Feb 2006 |
| 739 | Nytis Exploration Company LLC | Lexington, KY 40509 | Oil & Gas Operator | Dec 2021 |
| 740 | NZ Operating Company Inc. | Houston, TX 77069 | Oil & Gas Operator | Dec 2025 |