Oil & Gas Companies in Ouachita Parish, LA
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | T H Production Co. | | Oil & Gas Operator | Mar 1994 |
| 2 | Tahoe Corporation | | Gas Operator | Feb 2023 |
| 3 | Teel 78 A | | Gas Operator | Dec 1980 |
| 4 | Tellus Operating Group, LLC | | Oil & Gas Operator | Jun 2025 |
| 5 | Tennessee Gas Pipeline Company | | Oil & Gas Operator | Dec 2011 |
| 6 | Tensas Delta Land Company | | Oil & Gas Operator | Apr 2002 |
| 7 | Terronne Petroleum Corporation | | Oil & Gas Operator | Nov 2024 |
| 8 | Texas Gas Transmission LLC | Owensboro, KY 42301 | Oil & Gas Operator | Dec 2024 |
| 9 | Thomas Aitken, Inc. | | Gas Operator | Dec 2024 |
| 10 | Tomlinson Oil Co. Inc. | Great Bend, KS 67530 | Oil & Gas Operator | May 2025 |
| 11 | Tracer Energy, Inc. | Graham, TX 76450 | Oil & Gas Operator | Nov 1998 |
| 12 | Trans Ocean Oil, Inc. | | Oil & Gas Operator | Sep 1980 |
| 13 | Trico Oil Co., Inc. | | Gas Operator | Nov 1978 |
| 14 | Tulip Industries, Inc. | | Oil & Gas Operator | Feb 2024 |
| 15 | Twin City Gas | | Gas Operator | Nov 1997 |
| 16 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 17 | Tygr Operating Company, LLC | | Oil & Gas Operator | Nov 2024 |
Production numbers shown above are only for Ouachita Parish, LA and for the production period listed.