| 1301 | Lyco Operating Company | Dallas, TX 75206 | Gas Operator | Dec 1997 |
| 1302 | Lyda Gerald SR X Bar Ranch | San Antonio, TX 78268-0907 | Oil & Gas Operator | Feb 1994 |
| 1303 | Lydic, W. J., Inc. | Zanesville, OH 43702-2310-2310 | Oil & Gas Operator | Jan 2005 |
| 1304 | Lyle Cashion Company | | Oil & Gas Operator | Sep 1989 |
| 1305 | Lyle Energy & Development, Inc | | Oil Operator | Dec 2008 |
| 1306 | Lyles, Phillip | Madisonville, KY 42431 | Oil & Gas Operator | Dec 2022 |
| 1307 | Lymac Exploration And Production, LLC | | Oil & Gas Operator | Jul 2016 |
| 1308 | Lyn-Que Oil & Gas, Inc. | | Oil Operator | Sep 1992 |
| 1309 | Lyn-San Company | Midland, TX 79708 | Oil & Gas Operator | Dec 2018 |
| 1310 | Lynal, Inc. | | Oil & Gas Operator | Oct 1988 |
| 1311 | Lynal, Inc.- Michel T Halbouty | | Oil & Gas Operator | Oct 1984 |
| 1312 | Lynan Energy Inc | Oklahoma City, OK 73120 | Oil & Gas Operator | May 2013 |
| 1313 | Lynbrook Oil Company | Houston, TX 77057 | Oil & Gas Operator | Dec 2008 |
| 1314 | Lynch, W. W. | San Antonio, TX 78205 | Oil & Gas Operator | Jul 2006 |
| 1315 | Lynch, W. Waldo | Uvalde, TX 78801 | Oil & Gas Operator | Jan 1996 |
| 1316 | Lynch, Wilbur Waldo, Estate Of | New Braunfels, TX 78130 | Oil & Gas Operator | Oct 2017 |
| 1317 | Lynco Oilfield Equipment, Inc. | Giddings, TX 78942 | Oil & Gas Operator | Aug 2003 |
| 1318 | Lynco Production Company | Dallas, TX 75243 | Oil & Gas Operator | Nov 1999 |
| 1319 | Lynd, J. L., Inc. | Austin, TX 78716 | Oil & Gas Operator | Sep 2009 |
| 1320 | Lyndum, Inc. | Weatherford, TX 76088 | Oil & Gas Operator | Oct 2009 |
| 1321 | Lyne Energy Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 1322 | Lynn Creek Energy | McKinney, TX 75071 | Oil & Gas Operator | Nov 2015 |
| 1323 | Lynn Creek Oil Company | Allen, TX 75002 | Oil & Gas Operator | Apr 2020 |
| 1324 | Lynn Creek Oil Partnership, II | Dallas, TX 75243 | Oil & Gas Operator | Oct 2003 |
| 1325 | Lynn Creek Production Company | Allen, TX 75002 | Oil & Gas Operator | Dec 2011 |
| 1326 | Lynn Riggs LLC | Sebring, OH 44672 | Oil & Gas Operator | Dec 2023 |
| 1327 | Lynn William R | Pawhuska, OK 74056 | Oil & Gas Operator | May 2013 |
| 1328 | Lynx Energy Company, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2008 |
| 1329 | Lynx Oil Co., Inc. | Denton, TX 76207 | Oil & Gas Operator | Sep 2003 |
| 1330 | Lynx Oklahoma Operating LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | May 2024 |
| 1331 | Lynx Operating Co., Inc. | Dallas, TX 75206 | Oil & Gas Operator | Oct 2024 |
| 1332 | Lynx Petroleum Consultants Inc. | Hobbs, NM 88241 | Oil & Gas Operator | Feb 2024 |
| 1333 | Lyon Canyon Oil Corp. | | Oil & Gas Operator | Dec 1986 |
| 1334 | Lyon Energy, Inc. | Plano, TX 75075 | Oil & Gas Operator | Feb 2000 |
| 1335 | Lyon Hoyle | Sasakwa, OK 74867 | Oil Operator | Jun 2024 |
| 1336 | Lyon Oil Company | | Oil Operator | Mar 1985 |
| 1337 | Lyon Operating Company Inc.(Iii) | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2024 |
| 1338 | Lyon, John J. | Bozeman, MT 59718 | Oil & Gas Operator | Jun 2022 |
| 1339 | Lyons & Lyons Inc | Tulsa, OK 74119 | Oil & Gas Operator | Jun 2024 |
| 1340 | Lyons & Prentiss | | Oil Operator | Jul 2024 |
| 1341 | Lyons Pet., McCain & Jackson | | Oil & Gas Operator | Dec 1981 |
| 1342 | Lyons Petroleum Inc.-Dykes | | Oil & Gas Operator | Oct 1988 |
| 1343 | Lyons Petroleum, Inc. | | Oil & Gas Operator | Oct 1988 |
| 1344 | Lyons, Clarence Jr. | Chanute, KS 66720 | Oil Operator | Jun 2024 |
| 1345 | Lyons, Hilliard & Watson, Inc. | | Oil & Gas Operator | Jan 1989 |
| 1346 | Lyric Energy, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Mar 1996 |
| 1347 | Lyster Oil Company Inc | | Oil & Gas Operator | Nov 2020 |
| 1348 | Lytle & Phillips | Mexia, TX 76667 | Oil & Gas Operator | Mar 2008 |
| 1349 | Lytle Creek Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Oct 2024 |
| 1350 | LZB Energy, LLC | Austin, TX 78737 | Gas Operator | Jul 2020 |
| 1351 | LZS Corporation | Tulsa, OK 74105 | Oil & Gas Operator | Jan 2007 |