| 201 | LPB Oil Company | | Oil & Gas Operator | Apr 1991 |
| 202 | Lse Energy Co. | | Oil Operator | Mar 1989 |
| 203 | Lse Energy Operating Co. Inc. | | Oil Operator | Jun 1996 |
| 204 | LTX Productions, Inc. | Houston, TX 77095 | Oil & Gas Operator | Jul 2008 |
| 205 | Luca Operation, LLC | | Oil & Gas Operator | Feb 2016 |
| 206 | Lucky Lad Energy, LLC | Conroe, TX 77305 | Oil & Gas Operator | Apr 2024 |
| 207 | Lucky Strike Production LLC | | Oil Operator | Jan 2024 |
| 208 | Luffey Gas Corp. | | Gas Operator | Dec 2008 |
| 209 | Luffey Gas Corp.-Graff | | Gas Operator | Oct 1994 |
| 210 | Luffey-Stinson Gas Corporation | | Gas Operator | Sep 2018 |
| 211 | Luray Oil Co., L.L.C. | | Oil Operator | Jan 2024 |
| 212 | Lusk & Lusk, Inc. | | Oil & Gas Operator | Jul 1984 |
| 213 | Luther W. Davis | | Oil & Gas Operator | Jun 1996 |
| 214 | LVW, Inc. | | Oil & Gas Operator | Jan 2024 |
| 215 | Lwood Energy, Inc. | | Oil Operator | Dec 2002 |
| 216 | Lyco Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Jun 2015 |
| 217 | Lyle Cashion Company | | Oil & Gas Operator | Sep 1989 |
| 218 | Lymac Exploration And Production, LLC | | Oil & Gas Operator | Jul 2016 |
| 219 | Lyn-Que Oil & Gas, Inc. | | Oil Operator | Sep 1992 |
| 220 | Lynal, Inc. | | Oil & Gas Operator | Oct 1988 |
| 221 | Lynal, Inc.- Michel T Halbouty | | Oil & Gas Operator | Oct 1984 |
| 222 | Lyons Pet., McCain & Jackson | | Oil & Gas Operator | Dec 1981 |
| 223 | Lyons Petroleum Inc.-Dykes | | Oil & Gas Operator | Oct 1988 |
| 224 | Lyons Petroleum, Inc. | | Oil & Gas Operator | Oct 1988 |
| 225 | Lyons, Hilliard & Watson, Inc. | | Oil & Gas Operator | Jan 1989 |