| 1 | L & J Oil | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2000 |
| 2 | La Jolla Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Dec 2024 |
| 3 | Lakota Energy, LTD. | Paradise, TX 76073 | Oil & Gas Operator | Dec 2024 |
| 4 | Landrum Petroleum Co., Inc. | Burkburnett, TX 76354 | Oil Operator | Mar 2008 |
| 5 | Landrum West, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 1997 |
| 6 | Lankford, Dan L. | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 7 | Larance Engineering Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Jan 1996 |
| 8 | Large Operating LLC | Stinnett, TX 79083 | Oil & Gas Operator | Dec 2024 |
| 9 | Lariat Resources, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | May 2022 |
| 10 | Legacy Exploration, LLC I | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
| 11 | Leonard Brothers Operating Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Dec 2024 |
| 12 | Lesikar, L. W. | Fort Worth, TX 76121 | Oil & Gas Operator | Jun 2006 |
| 13 | Levens, C. H. | Water Valley, TX 76958 | Oil & Gas Operator | May 2010 |
| 14 | Lewis Heirs 480, LLC | Bryson, TX 76427 | Oil & Gas Operator | Dec 2024 |
| 15 | Lewis Operating Company | Holliday, TX 76366 | Oil & Gas Operator | Dec 2024 |
| 16 | Lewis Petro Properties, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Dec 2024 |
| 17 | Lewis, William T. | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 18 | Lex And Lace Petroleum, LLC | Southlake, TX 76092 | Oil Operator | Dec 2024 |
| 19 | Lexgas, Inc. | Roanoke, TX 76262 | Oil & Gas Operator | Dec 2024 |
| 20 | Lexus Gas Corporation | Roanoke, TX 76262 | Oil & Gas Operator | Jul 2005 |
| 21 | Lindemann, James D. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 22 | Little Drop Oil Company | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 23 | Littlepage, Tommy | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 24 | LKM Oil & Gas | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2024 |
| 25 | Lode Holdings, LLC | Wichita Falls, TX 76301 | Oil Operator | Dec 2024 |
| 26 | London Petroleum Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2024 |
| 27 | Long, Edgar E. | Windthorst, TX 76389 | Oil & Gas Operator | Oct 2011 |
| 28 | Longhorn Oil Properties, Inc. | Pottsboro, TX 75076 | Oil & Gas Operator | Dec 2024 |
| 29 | Lorac, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Dec 2024 |
| 30 | Lowrance, Gene | Chico, TX 76431 | Oil & Gas Operator | Aug 2003 |
| 31 | Lufkin Production Company Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2024 |
| 32 | Lynco Production Company | Dallas, TX 75243 | Oil & Gas Operator | Nov 1999 |
| 33 | Lynn Creek Energy | McKinney, TX 75071 | Oil & Gas Operator | Nov 2015 |
| 34 | Lynn Creek Oil Company | Allen, TX 75002 | Oil & Gas Operator | Apr 2020 |
| 35 | Lynn Creek Oil Partnership, II | Dallas, TX 75243 | Oil & Gas Operator | Oct 2003 |
| 36 | Lynn Creek Production Company | Allen, TX 75002 | Oil & Gas Operator | Dec 2011 |
| 37 | Lynx Oil Co., Inc. | Denton, TX 76207 | Oil & Gas Operator | Sep 2003 |
| 38 | Lynx Operating Co., Inc. | Dallas, TX 75206 | Oil & Gas Operator | Dec 2024 |
| 39 | Lyon Operating Company Inc.(Iii) | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2024 |