Oil & Gas Companies in Mississippi
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | L & B Oil Company Inc | Houston, TX 77019-3115 | Oil & Gas Operator | Mar 2025 |
| 2 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 3 | Lagniappe Petrole, LLC | | Oil & Gas Operator | Jun 2025 |
| 4 | Lahoma Operating, Inc. | | Oil & Gas Operator | Aug 2025 |
| 5 | Lamar Energy LLC | | Oil & Gas Operator | Aug 2025 |
| 6 | Larco Drilling & Exploration Corp. | | Oil & Gas Operator | Dec 1999 |
| 7 | Latex Petroleum Corp. | Houston, TX 77090 | Oil & Gas Operator | Aug 2012 |
| 8 | Lawson Engineering, Inc. | | Oil & Gas Operator | Dec 1984 |
| 9 | Liberty Operating Company,LLC | | Oil & Gas Operator | Aug 2025 |
| 10 | Liberty Southern Energy LLC | | Oil & Gas Operator | Jan 2014 |
| 11 | Libra Oil Co., Inc. | | Oil & Gas Operator | Nov 1986 |
| 12 | Llog Exploration Company, L.L.C. | | Oil & Gas Operator | Aug 2025 |
| 13 | Logan Oil, LLC | | Oil & Gas Operator | May 2010 |
| 14 | Louisiana Land & Exploration Co. | Houston, TX 77210 | Oil & Gas Operator | Sep 2013 |
| 15 | LPB Oil Co. | | Oil & Gas Operator | Apr 1991 |
| 16 | Lyle Cashion Co. | | Oil & Gas Operator | Sep 1989 |
| 17 | Lynx Operating Co., Inc. | Dallas, TX 75206 | Oil & Gas Operator | Nov 2025 |
Production numbers shown above are only for Mississippi and for the production period listed.