Oil & Gas Companies in Haskell County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | O'Tool Oil & Gas, LLC | Dallas, TX 75219 | Oil & Gas Operator | Oct 2025 |
| 2 | Oakridge Oil And Gas, LP | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 3 | Oil & Gas Properties | Midland, TX 79704 | Oil & Gas Operator | Oct 2025 |
| 4 | Oilwell Operators, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Oct 2025 |
| 5 | Older Than Dirt LLC | Palo Pinto, TX 76484 | Oil & Gas Operator | Oct 2025 |
| 6 | Origin Production Group LLC | Luling, TX 78648 | Oil Operator | Oct 2025 |
| 7 | Orland Oil & Gas LLC | FT Lauderdale, FL 33305 | Oil Operator | Aug 2024 |
| 8 | Orth Oil Company, Inc. | Cisco, TX 76437 | Oil & Gas Operator | Oct 2025 |
| 9 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 10 | Overland Operating Company, LLC | Abilene, TX 79601 | Oil Operator | Oct 2025 |
Production numbers shown above are only for Haskell County, TX and for the production period listed.