| 201 | Louisiana Jordan Oil Co, Inc. | Lake Charles, LA 70602 | Oil & Gas Operator | Dec 2024 |
| 202 | Louisiana Leasing & Expl, Inc. | | Oil & Gas Operator | Apr 2011 |
| 203 | Louisiana Minerals, LTD. | Houston, TX 77024 | Oil & Gas Operator | Jul 1988 |
| 204 | Louisiana Offshore Exploration, L.L.C. | | Oil & Gas Operator | Dec 2024 |
| 205 | Louisiana Operating Co., Inc. | | Oil & Gas Operator | Aug 1994 |
| 206 | Louisiana Resources Co | | Oil Operator | May 1992 |
| 207 | Louisiana Tank, Inc. | | Oil Operator | Mar 2023 |
| 208 | Louisiana-Caddo Invest, Inc. | | Oil & Gas Operator | Jun 2008 |
| 209 | Louisiana-Hunt Petroleum Corp. | | Oil & Gas Operator | Dec 1985 |
| 210 | Loutex Energy, Inc. | | Oil & Gas Operator | Nov 1987 |
| 211 | Loutex Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 212 | Lower Lafourche Corporation | | Oil & Gas Operator | Jan 1997 |
| 213 | Lowmar Exploration Co. | | Oil & Gas Operator | Feb 1990 |
| 214 | Loyd E. Simar | | Oil & Gas Operator | Aug 2001 |
| 215 | LPB Oil Co. | | Oil & Gas Operator | Apr 1991 |
| 216 | Lse Energy Co. | | Oil Operator | Mar 1989 |
| 217 | Lse Energy Operating Co. Inc. | | Oil Operator | Jun 1996 |
| 218 | LTX Productions, Inc. | Houston, TX 77095 | Oil & Gas Operator | Jul 2008 |
| 219 | Luca Operation, LLC | | Oil & Gas Operator | Feb 2016 |
| 220 | Lucky Lad Energy, LLC | Magnolia, TX 77353 | Oil & Gas Operator | Feb 2026 |
| 221 | Lucky Strike Production LLC | | Oil Operator | Dec 2024 |
| 222 | Luffey Gas Corp. | | Gas Operator | Dec 2008 |
| 223 | Luffey Gas Corp.-Graff | | Gas Operator | Oct 1994 |
| 224 | Luffey-Stinson Gas Corporation | | Gas Operator | Sep 2018 |
| 225 | Luray Oil Co., L.L.C. | | Oil Operator | Jan 2025 |
| 226 | Lusk & Lusk, Inc. | | Oil & Gas Operator | Jul 1984 |
| 227 | Luther W. Davis | | Oil & Gas Operator | Jun 1996 |
| 228 | LVW, Inc. | | Oil & Gas Operator | Dec 2024 |
| 229 | Lwood Energy, Inc. | | Oil Operator | Dec 2002 |
| 230 | Lyco Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Jun 2015 |
| 231 | Lyle Cashion Co. | | Oil & Gas Operator | Sep 1989 |
| 232 | Lymac Exploration And Production, LLC | | Oil & Gas Operator | Jul 2016 |
| 233 | Lyn-Que Oil & Gas, Inc. | | Oil Operator | Sep 1992 |
| 234 | Lynal, Inc. | | Oil & Gas Operator | Oct 1988 |
| 235 | Lynal, Inc.- Michel T Halbouty | | Oil & Gas Operator | Oct 1984 |
| 236 | Lyons Pet., McCain & Jackson | | Oil & Gas Operator | Dec 1981 |
| 237 | Lyons Petroleum Inc.-Dykes | | Oil & Gas Operator | Oct 1988 |
| 238 | Lyons Petroleum, Inc. | | Oil & Gas Operator | Oct 1988 |
| 239 | Lyons, Hilliard & Watson, Inc. | | Oil & Gas Operator | Jan 1989 |