Oil & Gas Companies in Johnson County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Eagleridge Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Oct 2025 |
| 2 | El Reno Energy, LLC | Granbury, TX 76048 | Oil & Gas Operator | Oct 2025 |
| 3 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
| 4 | Endeavor Energy Resources, LP | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 5 | Energy Transfer Crude Marketing LLC | Dallas, TX 75225 | Oil Operator | May 2025 |
| 6 | Energy Transfer Fuel, LP | Houston, TX 77002 | Oil & Gas Operator | Apr 2005 |
| 7 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 8 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 9 | Excel Oil & Gas, Inc. | Waxahachie, TX 75168 | Oil & Gas Operator | Oct 2025 |
| 10 | Explo Oil, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
Production numbers shown above are only for Johnson County, TX and for the production period listed.