| 16401 | Lee, R.A., Inc. | | Oil Operator | Nov 1972 |
| 16402 | Lee-Walker Mineral, LLC | Austin, TX 78746 | Oil Operator | May 2024 |
| 16403 | Leed Energy LLC | Purcell, OK 73080-1383 | Oil & Gas Operator | Jan 2024 |
| 16404 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 16405 | Leedy Oil Produc | | Oil & Gas Operator | Dec 1995 |
| 16406 | Leedy Oil Producers | | Oil Operator | Nov 2009 |
| 16407 | Leejan Oil Company | Amarillo, TX 79109 | Oil & Gas Operator | May 2024 |
| 16408 | Leeman Don J | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 1998 |
| 16409 | Leeman Energy Corporation | Oklahoma City, OK 73118-1802 | Oil & Gas Operator | Mar 2015 |
| 16410 | Leeper Oil Exp. & Prod. Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2005 |
| 16411 | Lees Petroleum LLC | | Oil & Gas Operator | Jul 2000 |
| 16412 | Leeward Operators LLC | | Oil & Gas Operator | Jul 2011 |
| 16413 | Leexus Oil & Gas L.L.P. | Giddings, TX 78942 | Oil & Gas Operator | Jun 2008 |
| 16414 | Leexus Oil LLC | Giddings, TX 78942 | Oil & Gas Operator | May 2024 |
| 16415 | Leexus Operating Company | Austin, TX 78734 | Oil & Gas Operator | Aug 2007 |
| 16416 | Lefco Resources LLC | Henryetta, OK 74437-0811 | Gas Operator | Jan 2024 |
| 16417 | Leffel'S, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2020 |
| 16418 | Lefort, Marian G. | Strykersville, NY 14145 | Gas Operator | Dec 2022 |
| 16419 | Left Behind Recovery, LLC | Luling, TX 78648 | Oil & Gas Operator | May 2024 |
| 16420 | Leg Up Operating Company LLC | | Oil Operator | Jan 2024 |
| 16421 | Legacy - M & K Corporation | Dallas, TX 75231-0969 | Oil & Gas Operator | Jan 2024 |
| 16422 | Legacy Acres, LLC | South Dayton, NY 14138 | Gas Operator | Dec 2022 |
| 16423 | Legacy Corporation, The | Cedar Park, TX 78613 | Oil & Gas Operator | Jun 2004 |
| 16424 | Legacy Energy Inc | Carpinteria, CA 93013 | Oil & Gas Operator | Jun 2012 |
| 16425 | Legacy Energy LLC | Russell, KS 67665 | Oil Operator | Jan 2024 |
| 16426 | Legacy Energy Services | Jourdanton, TX 78026 | Oil Operator | May 2024 |
| 16427 | Legacy Energy Services LLC | | Oil & Gas Operator | Jan 2024 |
| 16428 | Legacy Exploration, LLC I | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 16429 | Legacy Oil & Gas ND, Inc. | | Oil & Gas Operator | Feb 2016 |
| 16430 | Legacy Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | May 2024 |
| 16431 | Legacy Oklahoma Operators LLC | | Oil & Gas Operator | Jan 2024 |
| 16432 | Legacy Operating Company | | Oil & Gas Operator | Aug 1992 |
| 16433 | Legacy Operating Company, LLC | Dallas, TX 75205 | Oil Operator | May 2024 |
| 16434 | Legacy Petroleum Corporation | Dallas, TX 75225 | Oil & Gas Operator | Mar 2019 |
| 16435 | Legacy Petroleum LLC | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2023 |
| 16436 | Legacy Reserves Operating LP | Denver, CO 80202 | Oil & Gas Operator | May 2024 |
| 16437 | Legacy Resources Co., L.P. | Indianapolis, IN 46214 | Oil & Gas Operator | Apr 2019 |
| 16438 | Legado DJ, LLC | | Oil Operator | Jul 2011 |
| 16439 | Legado Gulf Coast, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2010 |
| 16440 | Legado Midcon, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2010 |
| 16441 | Legado Permian, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2013 |
| 16442 | Legend Energy Corporation | Stillwater, OK 74074-1721 | Oil & Gas Operator | Aug 2022 |
| 16443 | Legend Energy LLC | Cherryvale, KS 67335 | Oil Operator | Sep 2023 |
| 16444 | Legend Energy Texas, LLC | Arlington, TX 76002 | Oil & Gas Operator | May 2024 |
| 16445 | Legend Fund, LLC | | Oil & Gas Operator | Dec 2023 |
| 16446 | Legend Natural Gas II, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16447 | Legend Natural Gas III, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16448 | Legend Natural Gas IV, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 16449 | Legend Natural Gas, LP | Houston, TX 77084 | Oil & Gas Operator | Aug 2004 |
| 16450 | Legend Oil & Gas LTD. | Alpharetta, GA 30022 | Oil Operator | Mar 2015 |
| 16451 | Legend Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | May 2010 |
| 16452 | Legendary Oil Co., Inc. | | Oil Operator | Feb 2004 |
| 16453 | Legendary Well Service, Inc. | | Oil Operator | Jan 1996 |
| 16454 | Leger Production Company, Inc. | | Oil & Gas Operator | Apr 1984 |
| 16455 | Legg, Raymond | | Oil Operator | Dec 2010 |
| 16456 | Leggett Oil Company | Dallas, TX 75379 | Oil & Gas Operator | Oct 1999 |
| 16457 | Leggett Petroleum, L.L.C. | | Oil & Gas Operator | Dec 2020 |
| 16458 | Legleiter, Julius A. | Hays, KS 67601 | Oil Operator | Apr 1996 |
| 16459 | Legrand, Buck | Sedan, KS 67361 | Oil Operator | Jun 1994 |
| 16460 | Lehnertz, G. M. | Tyler, TX 75702 | Oil & Gas Operator | Dec 1998 |
| 16461 | Lehnertz-Faulkner, Inc. | Tyler, TX 75701 | Oil & Gas Operator | May 2024 |
| 16462 | Leicht, Cecil | Streetman, TX 75859 | Oil & Gas Operator | Feb 1998 |
| 16463 | Leigh Operating Co | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 16464 | Leighty, Roger Operator | Lawrenceville, IL 62439 | Oil & Gas Operator | Oct 1997 |
| 16465 | Leiker, Edward P. | Hays, KS 67601 | Oil Operator | Apr 1992 |
| 16466 | Leis Oil Services, LLC | Yates Center, KS 66783 | Oil Operator | Jul 2021 |
| 16467 | Leis, John E. | Yates Center, KS 66783 | Oil Operator | Jan 2024 |
| 16468 | Leis, Ryan M. | Scottsdale, AZ 85258 | Oil & Gas Operator | Dec 2009 |
| 16469 | Leis, Steven A. | Yates Center, KS 66783 | Oil Operator | Jan 2024 |
| 16470 | Leis, VIctor J. | Paola, KS 66071 | Oil & Gas Operator | Jan 2024 |
| 16471 | Leith Operations | | Oil Operator | Jul 1989 |
| 16472 | Lejan, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 2024 |
| 16473 | Lekan James V | Ashland, OH 44805 | Oil & Gas Operator | Dec 1997 |
| 16474 | Leland Oil & Gas, LLC | | Oil & Gas Operator | Mar 2024 |
| 16475 | Leland Petroleum Production Inc | | Oil & Gas Operator | Dec 2007 |
| 16476 | Lem Operating Co., Inc. | Colorado City, TX 79512 | Oil & Gas Operator | Nov 2012 |
| 16477 | Lema Petroleum Inc | Holdenville, OK 74848-0957 | Oil & Gas Operator | Jan 2024 |
| 16478 | Lemasters, Charles A. | Jacksonburg, WV 26377-0000 | Oil & Gas Operator | Dec 2021 |
| 16479 | Lemay Oil Company | Snyder, TX 79549 | Oil & Gas Operator | Jun 2002 |
| 16480 | Lemley Oil Corporation | Sulphur, OK 73086-9316 | Oil & Gas Operator | Dec 2023 |
| 16481 | Lemmons Jack | Cleveland, OK 74020-7023 | Oil Operator | Jan 2015 |
| 16482 | Lemon, Richard F. Jr. | Carrollton, TX 75006 | Oil & Gas Operator | May 2024 |
| 16483 | Lenape Resources Corp | | Oil & Gas Operator | Dec 2000 |
| 16484 | Lenape Resources LLC | Alexander, NY 14005 | Oil & Gas Operator | Dec 2022 |
| 16485 | Lendrum Energy LLC | Cranberry, PA 16319-4009 | Oil & Gas Operator | Dec 2023 |
| 16486 | Lenert & Pettitt, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 1994 |
| 16487 | Lengacher William P | Creston, OH 44217 | Oil & Gas Operator | Dec 2022 |
| 16488 | Lenhart Oil Company | Cashion, OK 73016-0188 | Oil & Gas Operator | Jul 2016 |
| 16489 | Lennon Oil Inc. | Corsicana, TX 75110 | Oil & Gas Operator | Oct 2008 |
| 16490 | Leo Michaelis Oil Operator | | Oil Operator | Oct 2002 |
| 16491 | Leo Vesenmeir, Jr. | | Oil & Gas Operator | Jul 1987 |
| 16492 | Leo Windham | | Oil Operator | Jul 1992 |
| 16493 | Leon J. Sabean | | Oil & Gas Operator | Dec 2018 |
| 16494 | Leonard 1&2 LLC | | Oil Operator | Mar 2024 |
| 16495 | Leonard Brothers Operating Co. | Fort Worth, TX 76101 | Oil & Gas Operator | May 2024 |
| 16496 | Leonard Vann | | Oil Operator | Feb 2024 |
| 16497 | Leonard, Daniel M. | Fort Worth, TX 76101 | Oil & Gas Operator | Nov 2001 |
| 16498 | Leonard, J. A. | Austin, TX 78734 | Oil & Gas Operator | May 2024 |
| 16499 | Leonard, Patricia Anne | San Antonio, TX 78209 | Oil & Gas Operator | Oct 1996 |
| 16500 | Leone, Thomas E. | Elma, NY 14059 | Gas Operator | Dec 2022 |