| 1601 | Husky Oil Company | Cody, WY 82414 | Oil & Gas Operator | Dec 1984 |
| 1602 | Husky Petroleum | Seminole, OK 74818-1181 | Oil Operator | Feb 2012 |
| 1603 | Husky Ventures Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Jan 2026 |
| 1604 | Huson Corp. | Albany, TX 76430 | Oil & Gas Operator | May 2003 |
| 1605 | Huston Minerals LP | Albany, TX 76430 | Oil & Gas Operator | May 2026 |
| 1606 | Huston Oil | Woodson, TX 76491 | Oil & Gas Operator | Oct 2010 |
| 1607 | Hutchinson Oil C | | Oil & Gas Operator | May 1995 |
| 1608 | Hutchinson Oil Co. | | Oil & Gas Operator | Jan 2026 |
| 1609 | Hutchison Jay Oi | | Oil Operator | Sep 1991 |
| 1610 | Hutson Oil Co. | | Oil & Gas Operator | Nov 2024 |
| 1611 | Hutton Charles N | | Oil Operator | Dec 1994 |
| 1612 | Hutton Gas Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
| 1613 | Hutton, Charles N., SR. | Iola, KS 66749 | Oil Operator | Nov 2007 |
| 1614 | Hux Oil Company LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Feb 2026 |
| 1615 | Hvi Cat Canyon Inc. | | Oil & Gas Operator | Dec 2025 |
| 1616 | HW Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2026 |
| 1617 | HWH Production, LLC | Muenster, TX 76252 | Oil Operator | May 2026 |
| 1618 | Hy-Mark Oil & Gas, Inc. | | Oil Operator | Mar 1991 |
| 1619 | Hy-Tech, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Feb 2017 |
| 1620 | Hyalite Energy Corporation | Pampa, TX 79066 | Oil & Gas Operator | Jan 2026 |
| 1621 | Hyatt Exploration, Inc. | | Oil Operator | Jul 1995 |
| 1622 | Hybrid Operating, Incorporated | Carlsbad, CA 92009 | Oil & Gas Operator | May 2026 |
| 1623 | Hyco Oil Inc | Newcastle, WY 82701 | Oil & Gas Operator | Dec 2006 |
| 1624 | Hyde-Marrs, Inc. | Wichita, KS 67202 | Oil Operator | Aug 1997 |
| 1625 | Hyder, Dean L. | Akron, NY 14001 | Gas Operator | Dec 2024 |
| 1626 | Hydroc Oil Company | Borger, TX 79007 | Oil & Gas Operator | May 2012 |
| 1627 | Hydrocarbon Exploration, Inc. | | Oil & Gas Operator | Dec 2008 |
| 1628 | Hydrocarbon Generation, Inc. | Allegany, NY 14706 | Oil & Gas Operator | Dec 2024 |
| 1629 | Hydrocarbon Horizons, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Jun 2023 |
| 1630 | Hydrocarbon Inv, Inc | | Oil Operator | Dec 2018 |
| 1631 | Hydrocarbon Lease Management LTD | Addison, TX 75001 | Oil & Gas Operator | Jul 2002 |
| 1632 | Hydrocarbon Management, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Dec 1996 |
| 1633 | Hydrocarbon MGMT., Inc. | | Oil & Gas Operator | Mar 1997 |
| 1634 | Hydrocarbon Operating, Inc. | Corpus Christ, TX 78401 | Oil & Gas Operator | May 2026 |
| 1635 | Hydrocarbon Resources LTD | Medina, OH 44256 | Oil & Gas Operator | Dec 2022 |
| 1636 | Hydrocarbon Technology Services | | Oil & Gas Operator | Dec 2000 |
| 1637 | Hydrofusion Energy, LLC | Cuero, TX 77954 | Oil Operator | May 2026 |
| 1638 | Hydrogeo, L.L.C. | Houston, TX 77074 | Oil & Gas Operator | May 2026 |
| 1639 | Hyer,Na & CJ Aldenhoven Trusts | Lipan, TX 76462 | Gas Operator | Oct 2017 |
| 1640 | Hyland Oil Corporation | | Oil & Gas Operator | Apr 1990 |
| 1641 | Hyman Muslow | | Oil Operator | Jun 1995 |
| 1642 | Hyndrex Resources | | Oil & Gas Operator | Feb 2016 |
| 1643 | Hyperion Energy LP | Dallas, TX 75206 | Oil & Gas Operator | May 2014 |
| 1644 | Hyperion Oil & Gas LLC | Dallas, TX 75251 | Oil & Gas Operator | May 2026 |
| 1645 | Hyquest Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 2015 |