Oil & Gas Companies in St. Martin Parish, LA
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | T & M Gauging | | Oil Operator | Oct 2006 |
| 2 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 3 | Tepco Resources, Inc. | Houston, TX 77027 | Oil & Gas Operator | Sep 2004 |
| 4 | Tepco, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 1999 |
| 5 | Terrier Oil Company | | Oil & Gas Operator | Feb 2015 |
| 6 | Texaco E & P Inc. | Houston, TX 77099 | Oil & Gas Operator | Dec 2025 |
| 7 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 8 | Texaco Producing Inc. | Rock Springs, WY 82901 | Oil & Gas Operator | Dec 2000 |
| 9 | Texas Crude Oil Co. | | Oil & Gas Operator | Dec 1984 |
| 10 | Texas Crude Operator, Inc. | Houston, TX 77098 | Oil & Gas Operator | Aug 2017 |
| 11 | Texas Crude, Inc. | Houston, TX 77256 | Oil & Gas Operator | Oct 1995 |
| 12 | Texas Petroleum Investment Company | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 13 | Texoma Production Co | | Oil & Gas Operator | Jun 1986 |
| 14 | The Cornell Corporation | Fort Worth, TX 76109 | Oil & Gas Operator | Sep 1993 |
| 15 | The Meridian Res. & Exp. LLC | | Oil & Gas Operator | Sep 2010 |
| 16 | The Meridian Resource & Exp Co | | Oil & Gas Operator | Dec 2000 |
| 17 | The Termo Company | Long Beach, CA 90801 | Oil & Gas Operator | Oct 2025 |
| 18 | Tiger Petroleum | | Oil Operator | Sep 2002 |
| 19 | Toce Oil Company | | Oil & Gas Operator | Dec 2014 |
| 20 | Transamerican Energy/Toce Oil | | Oil & Gas Operator | Dec 1994 |
| 21 | Transamerican-Swepi-Toce Oil | | Oil & Gas Operator | Apr 1990 |
| 22 | Trinity Resources, Inc. | Houston, TX 77277 | Oil & Gas Operator | May 2020 |
| 23 | Triton Oil & Gas Corp. | Houston, TX 77002 | Oil & Gas Operator | Nov 2014 |
| 24 | Triumph Energy Inc | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2015 |
| 25 | TXP Operating Co. | | Oil & Gas Operator | Jul 1992 |
Production numbers shown above are only for St. Martin Parish, LA and for the production period listed.