| 16501 | Le Norman Partners LLC | Duncan, OK 73533-9523 | Oil & Gas Operator | Feb 2012 |
| 16502 | Le Roy Central School | Le Roy, NY 14482 | Gas Operator | Dec 2025 |
| 16503 | Lea Exploration, Inc. | | Oil & Gas Operator | Nov 1989 |
| 16504 | Leach Joseph L | Gallipolis, OH 45631 | Oil & Gas Operator | Dec 2023 |
| 16505 | Leach, Elwood | Osawatomie, KS 66064 | Oil Operator | Dec 2009 |
| 16506 | Leaco Operating, LLC | Houston, TX 77056 | Oil Operator | May 2026 |
| 16507 | Leader Equities Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 1988 |
| 16508 | Leading Edge Energy LLC | San Antonio, TX 78205 | Oil Operator | Jul 2026 |
| 16509 | Leads Resources, L.L.C. | | Oil & Gas Operator | Jan 2017 |
| 16510 | Leahy Oil, LLC | Arlington, TX 76006 | Oil Operator | Jul 2026 |
| 16511 | Leake Keith D | Winfield, KS 67156-8871 | Oil Operator | Apr 2004 |
| 16512 | Leake, Keith D.(Deceased) Estate | Derby, KS 67037 | Oil Operator | Mar 2003 |
| 16513 | Leali & Leali Oil Inc | Hermitage, PA 16148-9020 | Oil & Gas Operator | Dec 2016 |
| 16514 | Leaman Oil Company | Roland, OK 74954 | Oil & Gas Operator | Apr 2014 |
| 16515 | Lear Gas Transmission | | Oil Operator | Aug 1989 |
| 16516 | Lear Oil, LLC | Junction City, KY 40440 | Oil Operator | Dec 2023 |
| 16517 | Lear Petroleum Corp | Houston, TX 77210 | Oil & Gas Operator | Mar 2015 |
| 16518 | Lear Petroleum E | | Oil & Gas Operator | Jan 1986 |
| 16519 | Lear Petroleum Exploration | | Oil & Gas Operator | Jul 2013 |
| 16520 | Lear Petroleum Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Aug 1999 |
| 16521 | Learning Disabilities Association Of Wny | Buffalo, NY 14214 | Gas Operator | Dec 2025 |
| 16522 | Lease Holders Acquisitions LLC | Yukon, OK 73099 | Gas Operator | Jul 2026 |
| 16523 | Lease Management Inc | | Oil & Gas Operator | May 2026 |
| 16524 | Lease Management Inc And McClure Oil Co | | Oil & Gas Operator | Apr 1991 |
| 16525 | Lease Management Inc And Patrick Petroleum Corp | | Oil & Gas Operator | Apr 1991 |
| 16526 | Leasehold Management Corp | Oklahoma City, OK 73107 | Oil & Gas Operator | Nov 2024 |
| 16527 | Leasing & Development, Inc. | Wichita, KS 67202 | Oil Operator | Jun 2022 |
| 16528 | Leatherman Creek, Inc. | | Oil Operator | Jul 2001 |
| 16529 | Leatherneck Energy Group Inc | Addison, TX 75001-6025 | Oil & Gas Operator | Apr 2020 |
| 16530 | Leatherwood, LLC | Canonsburg, PA 15317-6506 | Oil & Gas Operator | Dec 2023 |
| 16531 | Leavell Resource | | Oil Operator | Dec 1993 |
| 16532 | Leavell Resources Corporation | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 16533 | Leben Corp. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2011 |
| 16534 | Leben Drilling I | | Oil & Gas Operator | Dec 1988 |
| 16535 | Leben Oil Corpor | | Oil & Gas Operator | Apr 1991 |
| 16536 | Leben Theodore I | | Oil & Gas Operator | Dec 1995 |
| 16537 | Leboeuf MFG Inc | | Gas Operator | Dec 1990 |
| 16538 | Lebosquet Gas Operations, LLC | Wichita, KS 67202 | Gas Operator | Mar 2026 |
| 16539 | Lebosquet John R | | Gas Operator | Dec 1994 |
| 16540 | Lebosquet, John W. | Wichita, KS 67202 | Gas Operator | Mar 2026 |
| 16541 | Lebow, Marvin E. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1997 |
| 16542 | Lebsack Oil Prod | | Oil & Gas Operator | Nov 1995 |
| 16543 | Lebsack Oil Production Inc. | Stafford, KS 67578 | Oil & Gas Operator | Mar 2026 |
| 16544 | Lebsack, James S. | Denver, CO 80222 | Oil Operator | Sep 1998 |
| 16545 | Lebus Oilfield Service Co | | Oil Operator | Sep 2009 |
| 16546 | Leclair Operating Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Jul 2026 |
| 16547 | Leclair Operating, L.L.C. | Abilene, TX 79602 | Oil & Gas Operator | Jul 2026 |
| 16548 | Leclair-Westwood Inc | | Oil & Gas Operator | Mar 1982 |
| 16549 | Led Enterprises | El Dorado, KS 67042 | Oil Operator | Sep 1999 |
| 16550 | Led Enterprises LLC | El Dorado, KS 67042 | Oil Operator | Dec 2009 |
| 16551 | Ledbetter, Jerald D. Estate Of | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2026 |
| 16552 | Ledbetter, Jerald D. Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2007 |
| 16553 | Ledbetter, Morris | Abilene, TX 79605 | Oil & Gas Operator | Jun 2005 |
| 16554 | Ledbetter, O. H. | Albany, TX 76430 | Oil & Gas Operator | Mar 1997 |
| 16555 | Ledford Jan Oil & Gas | Duncan, OK 73533-3210 | Oil Operator | Nov 2025 |
| 16556 | Ledger Operating Corporation | Abilene, TX 79604 | Oil Operator | Jul 2026 |
| 16557 | Lee And Jane Laird | | Oil & Gas Operator | Dec 2002 |
| 16558 | Lee Brothers Oil Co. | Houston, TX 77056 | Oil & Gas Operator | Mar 2008 |
| 16559 | Lee Donna Oil Co | | Oil & Gas Operator | Dec 1996 |
| 16560 | Lee E & M Lee Minter | New Kensington, PA 15068-1440 | Gas Operator | Dec 2003 |
| 16561 | Lee Energy Exploration LTD | Oklahoma City, OK 73102-7114 | Oil & Gas Operator | Jul 2008 |
| 16562 | Lee Energy LLC | Edmond, OK 73034-7668 | Oil Operator | Jan 2005 |
| 16563 | Lee Jr W E | Beggs, OK 74421-2683 | Oil & Gas Operator | May 2013 |
| 16564 | Lee Lamberson Inc. | | Oil & Gas Operator | Dec 2000 |
| 16565 | Lee Lynn MGMT Co | Indiana, PA 15701-3400 | Oil & Gas Operator | Dec 1991 |
| 16566 | Lee M Crane | Bloomfield, NM 87413 | Gas Operator | May 2026 |
| 16567 | Lee Mills | | Oil Operator | Feb 1992 |
| 16568 | Lee Of Tulsa Oil & Gas Inc | Tulsa, OK 74114-5634 | Oil & Gas Operator | Dec 2021 |
| 16569 | Lee Phillips Oil Company | | Oil Operator | Mar 2026 |
| 16570 | Lee Production Co. | Monahans, TX 79756 | Oil & Gas Operator | Jul 2026 |
| 16571 | Lee Ron | Emory, TX 75440 | Oil Operator | Jul 2025 |
| 16572 | Lee Roy Daigle | | Oil Operator | Dec 1992 |
| 16573 | Lee'S Summit Gas Co. | | Gas Operator | Dec 1933 |
| 16574 | Lee, R.A., Inc. | | Oil Operator | Nov 1972 |
| 16575 | Leed Energy LLC | Purcell, OK 73080-1383 | Oil & Gas Operator | Apr 2026 |
| 16576 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 16577 | Leedy Oil Produc | | Oil & Gas Operator | Dec 1995 |
| 16578 | Leedy Oil Producers | | Oil Operator | Nov 2009 |
| 16579 | Leejan Oil Company | Amarillo, TX 79109 | Oil & Gas Operator | Jul 2026 |
| 16580 | Leeman Don J | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 1998 |
| 16581 | Leeman Energy Corporation | Oklahoma City, OK 73118-1802 | Oil & Gas Operator | Mar 2015 |
| 16582 | Leeper Oil Exp. & Prod. Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2005 |
| 16583 | Lees Petroleum LLC | | Oil & Gas Operator | Jul 2000 |
| 16584 | Leeward Operators LLC | | Oil & Gas Operator | Jul 2011 |
| 16585 | Leexus Oil & Gas L.L.P. | Giddings, TX 78942 | Oil & Gas Operator | Jun 2008 |
| 16586 | Leexus Oil LLC | Giddings, TX 78942 | Oil & Gas Operator | Jul 2026 |
| 16587 | Leexus Operating Company | Austin, TX 78734 | Oil & Gas Operator | Aug 2007 |
| 16588 | Lefco Resources LLC | Henryetta, OK 74437 | Gas Operator | Apr 2026 |
| 16589 | Leffel'S, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2020 |
| 16590 | Left Behind Recovery, LLC | Luling, TX 78648 | Oil & Gas Operator | Jul 2026 |
| 16591 | Leg Up Operating Company LLC | Tulsa, OK 74135 | Oil Operator | Apr 2026 |
| 16592 | Legacy - M & K Corporation | Dallas, TX 75231-0969 | Oil & Gas Operator | Jan 2025 |
| 16593 | Legacy Acres, LLC | South Dayton, NY 14138 | Gas Operator | Dec 2025 |
| 16594 | Legacy Corporation, The | Cedar Park, TX 78613 | Oil & Gas Operator | Jun 2004 |
| 16595 | Legacy Energy Inc | Carpinteria, CA 93013 | Oil & Gas Operator | Jun 2012 |
| 16596 | Legacy Energy Services | Jourdanton, TX 78026 | Oil Operator | Jul 2026 |
| 16597 | Legacy Energy Services LLC | Stillwater, OK 74074 | Oil & Gas Operator | May 2026 |
| 16598 | Legacy Energy, LLC | Russell, KS 67665 | Oil Operator | Mar 2026 |
| 16599 | Legacy Exploration, LLC I | Dallas, TX 75201 | Oil & Gas Operator | Jul 2026 |
| 16600 | Legacy Ogc LLC | Erie, PA 16509 | Oil & Gas Operator | Dec 2025 |