| 6301 | Leroy Oil Co. | Gainesville, TX 76240 | Oil & Gas Operator | Jun 2002 |
| 6302 | Lesikar, L. W. | Fort Worth, TX 76121 | Oil & Gas Operator | Jun 2006 |
| 6303 | Letwin & Kallison | Fort Worth, TX 76107 | Oil & Gas Operator | Jun 2004 |
| 6304 | Lety Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Aug 2002 |
| 6305 | Levant Energy LLC | Milton, MA 02186 | Oil Operator | Apr 2026 |
| 6306 | Levee Oil LLC | Tuscola, TX 79562 | Oil Operator | Apr 2026 |
| 6307 | Levens, C. H. | Water Valley, TX 76958 | Oil & Gas Operator | May 2010 |
| 6308 | Leverage Operating, LLC | San Antonio, TX 78257 | Oil & Gas Operator | Dec 2021 |
| 6309 | Levinson Partners Corporation | Denver, CO 80202 | Oil & Gas Operator | Jul 1995 |
| 6310 | Levisay Operating Co. | Brownwood, TX 76801 | Oil & Gas Operator | Apr 2026 |
| 6311 | Lewis & Hays | Albany, TX 76430 | Oil & Gas Operator | Feb 2002 |
| 6312 | Lewis Heirs 480, LLC | Bryson, TX 76427 | Oil & Gas Operator | Apr 2026 |
| 6313 | Lewis Oil And Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |
| 6314 | Lewis Oil Corp. | Stillwater, OK 74076 | Oil & Gas Operator | Jan 2026 |
| 6315 | Lewis Operating Company | Holliday, TX 76366 | Oil & Gas Operator | Apr 2026 |
| 6316 | Lewis Petro Properties, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Apr 2026 |
| 6317 | Lewis, James B. Land & Oil Co. | Midland, TX 79702 | Oil & Gas Operator | Nov 1998 |
| 6318 | Lewis, R. J. Oil Company | Stillwater, OK 74076 | Oil & Gas Operator | Apr 2014 |
| 6319 | Lewis, T. K. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Apr 2026 |
| 6320 | Lewis, William T. | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 6321 | Lex And Lace Petroleum, LLC | Houston, TX 77269 | Oil Operator | Apr 2026 |
| 6322 | Lexgas, Inc. | Roanoke, TX 76262 | Oil & Gas Operator | Apr 2026 |
| 6323 | Lexus Gas Corporation | Roanoke, TX 76262 | Oil & Gas Operator | Jul 2005 |
| 6324 | LGDC Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2026 |
| 6325 | Libertad Operating LLC | Midland, TX 79705 | Oil & Gas Operator | Apr 2026 |
| 6326 | Liberty Head Petroleum, Inc. | San Antonio, TX 78229 | Oil & Gas Operator | Sep 2017 |
| 6327 | Liberty National Corp | Dallas, TX 75206 | Oil Operator | Dec 2006 |
| 6328 | Liberty Operating Company, Inc. | Lake Dallas, TX 75065 | Oil & Gas Operator | Mar 2008 |
| 6329 | Liberty Production Co | Houston, TX 77002 | Oil & Gas Operator | Nov 1994 |
| 6330 | Liberty Resources Co. | Big Lake, TX 76932 | Oil & Gas Operator | Mar 1994 |
| 6331 | Libom Oil Company | Elmsford, NY 10523 | Oil & Gas Operator | Aug 2003 |
| 6332 | Lif-Tex Oil Recovery, Inc. | Luling, TX 78648 | Oil Operator | Apr 2026 |
| 6333 | Light Resources | San Antonio, TX 78278 | Oil & Gas Operator | Aug 2013 |
| 6334 | Lighthouse Exploration, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Jul 2007 |
| 6335 | Lighthouse Operating, Inc. | Corpus Christ, TX 78410 | Oil & Gas Operator | Jun 2021 |
| 6336 | Lightning Oil Company | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2026 |
| 6337 | Likover Oil Company | Houston, TX 77024 | Oil & Gas Operator | Mar 2005 |
| 6338 | Lilley, C.C., Inc. | Dallardsville, TX 77332 | Oil & Gas Operator | Apr 2026 |
| 6339 | Lillis, Michael D. | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 6340 | Limark Corporation | Midland, TX 79702 | Oil & Gas Operator | Dec 2003 |
| 6341 | Lime Creek Enterprises | Aztec, NM 87410 | Oil & Gas Operator | Aug 2008 |
| 6342 | Lime Rock Resources A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 6343 | Lime Rock Resources II-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2026 |
| 6344 | Lime Rock Resources III-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 6345 | Lime Rock Resources IV-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Apr 2026 |
| 6346 | Limestone Exploration II, LLC | Midland, TX 79704 | Oil & Gas Operator | Jun 2019 |
| 6347 | Limestone Exploration, LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2011 |
| 6348 | Limestone Oil & Gas Co. | Wichita Falls, TX 76302 | Oil & Gas Operator | Jul 2002 |
| 6349 | Limited Resources | Perryton, TX 79070 | Oil & Gas Operator | Aug 2003 |
| 6350 | Linan Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Apr 2026 |
| 6351 | Linc Gulf Coast Petroleum, Inc. | Katy, TX 77494 | Oil & Gas Operator | Apr 2026 |
| 6352 | Linco Oil Company | Ozona, TX 76943 | Oil & Gas Operator | Apr 2026 |
| 6353 | Lincoln Energy Partners, LLC | Graham, TX 76450 | Oil Operator | Apr 2026 |
| 6354 | Lincoln Rock Corporation | Northfield, IL 60093 | Oil & Gas Operator | Jul 2003 |
| 6355 | Lindemann, James D. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 6356 | Lindemann, Robert Operating | Holliday, TX 76366 | Oil & Gas Operator | Apr 2026 |
| 6357 | Lindemann, W. L., DRLG. Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 1994 |
| 6358 | Lindemann, W.L., Oper. Co., Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2006 |
| 6359 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Jun 2025 |
| 6360 | Lindenmuth & Associates, Etex | Austin, TX 78703 | Oil & Gas Operator | Jun 2002 |
| 6361 | Linder Oil Company,A Partnership | Shreveport, LA 71136 | Oil & Gas Operator | Apr 2026 |
| 6362 | Linder, John G. Jr. | Gladewater, TX 75647 | Oil & Gas Operator | Apr 2005 |
| 6363 | Linder, John Operating Co., LLC | Gladewater, TX 75647 | Oil & Gas Operator | Apr 2026 |
| 6364 | Lindholm Oil, Inc. | Mathis, TX 78368 | Gas Operator | Sep 2002 |
| 6365 | Lindley, J. R. | Richardson, TX 75081 | Oil & Gas Operator | Jun 2002 |
| 6366 | Lindow Oil & Gas, LLC | Caldwell, TX 77836 | Oil & Gas Operator | Apr 2026 |
| 6367 | Lindsay Oil Operations | Wichita Falls, TX 76310 | Oil & Gas Operator | Jun 2010 |
| 6368 | Lindsay, Dick | Graham, TX 76450 | Oil & Gas Operator | May 2015 |
| 6369 | Lindsay, Robert L. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 1995 |
| 6370 | Line Energy LLC | Columbus, NE 68601 | Oil Operator | Apr 2025 |
| 6371 | Linn Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2017 |
| 6372 | Linn Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2019 |
| 6373 | Linop Corporation | Austin, TX 78728 | Oil & Gas Operator | Apr 2026 |
| 6374 | Lion Production, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2006 |
| 6375 | Lionheart Energy Corporation | Durango, CO 81301 | Oil & Gas Operator | Apr 2026 |
| 6376 | Lions Den Operating LLC | Kilgore, TX 75663 | Gas Operator | Apr 2026 |
| 6377 | Lipan Flats Production, L.L.C. | San Angelo, TX 76905 | Oil Operator | Apr 2026 |
| 6378 | Liquid Petroleum Resources, Inc. | Amarillo, TX 79120 | Gas Operator | Apr 2026 |
| 6379 | Lissner, Lindy | Jourdanton, TX 78026 | Oil & Gas Operator | Apr 2026 |
| 6380 | Litchfield Production Co. | Nederland, TX 77627 | Oil & Gas Operator | Apr 2026 |
| 6381 | Little & Whyte Operating, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Mar 2008 |
| 6382 | Little Cypress Oil & Gas, L.L.C. | Fullerton, CA 92834 | Oil Operator | Apr 2026 |
| 6383 | Little Drop Oil Company | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 6384 | Little Oil & Gas | Pampa, TX 79065 | Oil & Gas Operator | Apr 2026 |
| 6385 | Little River Energy Company | Drumright, OK 74030 | Oil & Gas Operator | Feb 2026 |
| 6386 | Little, Lou Operating Co., Inc. | Portland, TX 78374 | Oil & Gas Operator | Sep 2014 |
| 6387 | Little, Quintin Company,Inc.,The | Ardmore, OK 73402 | Oil & Gas Operator | Apr 2026 |
| 6388 | Littlepage, Tommy | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 6389 | Live Oak Gas Company | Dallas, TX 75251 | Oil & Gas Operator | Apr 2026 |
| 6390 | Live Oak Op & Production, L.L.C. | Austin, TX 78759 | Oil & Gas Operator | Nov 2011 |
| 6391 | Live Oak Petroleum, Inc. | Dallas, TX 75251 | Gas Operator | Mar 2001 |
| 6392 | Live Oak Reserves, Inc. | Houston, TX 77019 | Oil & Gas Operator | Apr 2026 |
| 6393 | Live Oak/Operations, Inc. | Houston, TX 77019 | Gas Operator | Jul 2011 |
| 6394 | Lively Energy & Development Corp | Boerne, TX 78015 | Oil & Gas Operator | May 2015 |
| 6395 | Lively Exploration Company | Houston, TX 77063 | Oil & Gas Operator | Apr 2026 |
| 6396 | Livingston, David Oil Company | Haskell, TX 79521 | Oil & Gas Operator | Aug 2003 |
| 6397 | Livingston, F. L. | Megargel, TX 76370 | Oil & Gas Operator | May 2018 |
| 6398 | Lizard Lick Transport, LLC | Grandfalls, TX 79742 | Oil & Gas Operator | Apr 2026 |
| 6399 | LKD Corp. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2018 |
| 6400 | LKKTX 2018, LLC | Wichita Falls, TX 76305 | Oil Operator | Apr 2026 |