| 1001 | Kuykendall, M. C. | Electra, TX 76360 | Oil & Gas Operator | Apr 1995 |
| 1002 | Kuykendall, M.C., Estate | Electra, TX 76360 | Oil & Gas Operator | Aug 2003 |
| 1003 | Kuzemchak Theodore J | Clymer, PA 15728-7910 | Gas Operator | Dec 2025 |
| 1004 | KV Oil & Gas, Inc. | | Oil & Gas Operator | Dec 2006 |
| 1005 | KVL Operating, LLC | Midland, TX 79708 | Oil & Gas Operator | Feb 2026 |
| 1006 | KWB Oil Property | | Oil Operator | Oct 1992 |
| 1007 | KWB Oil Property Management Inc | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2025 |
| 1008 | KWB Oil Property MGMT, Inc. | | Oil & Gas Operator | Mar 1983 |
| 1009 | Kwilos, Stanley | Angola, NY 14006 | Gas Operator | Dec 2024 |
| 1010 | KWR Ventures LLC | Harrisburg, IL 62946 | Oil Operator | Dec 2023 |
| 1011 | KWS Oil & Gas, LLC | Wink, TX 79789 | Oil & Gas Operator | Feb 2026 |
| 1012 | Ky Crude LLC | Bowling Green, KY 42103 | Oil Operator | Dec 2021 |
| 1013 | Ky Energy Group, LLC | | Oil & Gas Operator | Dec 2015 |
| 1014 | Ky Ohio Gas Co | | Oil Operator | Dec 2021 |
| 1015 | Ky Oil Co | Palco, KS 67657 | Oil & Gas Operator | Aug 2000 |
| 1016 | Ky USA Energy, Inc | | Oil & Gas Operator | Dec 2020 |
| 1017 | Ky-Tenn Expl Co, Inc | New Concord, OH 43762 | Oil & Gas Operator | Dec 2023 |
| 1018 | Kybenco Disposals LLC | Maysville, OK 73052 | Oil Operator | Sep 2022 |
| 1019 | Kykon Oil & Gas, Inc. | Billings, MT 59103 | Oil & Gas Operator | Jun 2007 |
| 1020 | Kykuit Resources, LLC | Winifred, MT 59489 | Gas Operator | Mar 2021 |
| 1021 | Kyl-Kat Petroleum | | Oil & Gas Operator | Oct 1996 |
| 1022 | Kylander Oil Inc | Warren, PA 16365-4366 | Oil & Gas Operator | Dec 2025 |
| 1023 | Kyle Energy Inc NV | Apollo, PA 15613-0249 | Gas Operator | Dec 1996 |
| 1024 | Kyler Oil Company | Pawhuska, OK 74056-0117 | Oil Operator | Nov 1998 |
| 1025 | Kynge Energy Investments LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 1026 | Kynosa Inc. | Levelland, TX 79336 | Oil & Gas Operator | Jun 1998 |
| 1027 | Kytex, Inc. | Wichita, KS 67230 | Oil Operator | Dec 2019 |
| 1028 | Kytx Oil & Gas, LLC | Gray, KY 40734 | Oil & Gas Operator | Dec 2021 |
| 1029 | KZ Global Energy, LLC | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |