| 1401 | Lyons Petroleum, Inc. | | Oil & Gas Operator | Oct 1988 |
| 1402 | Lyons, Clarence Jr. | Chanute, KS 66720 | Oil Operator | Aug 2025 |
| 1403 | Lyons, Hilliard & Watson, Inc. | | Oil & Gas Operator | Jan 1989 |
| 1404 | Lyric Energy, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Mar 1996 |
| 1405 | Lytle & Phillips | Mexia, TX 76667 | Oil & Gas Operator | Mar 2008 |
| 1406 | Lytle Creek Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Feb 2026 |
| 1407 | LZB Energy, LLC | Austin, TX 78737 | Gas Operator | Jul 2020 |
| 1408 | LZS Corporation | Tulsa, OK 74105 | Oil & Gas Operator | Jan 2007 |