Oil & Gas Companies in Hardeman County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Ram Operating Inc. | Browns, IL 62818 | Oil & Gas Operator | Aug 2008 |
| 2 | Ranger Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 3 | Ratliff Operating Corp. | Amarillo, TX 79105 | Oil & Gas Operator | Oct 2025 |
| 4 | Red River Petroleum Inc | Tipton, OK 73570 | Oil Operator | Jun 2025 |
| 5 | Rein Pusher Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Oct 2025 |
| 6 | Resource Operating Company | Abilene, TX 79601 | Oil & Gas Operator | Jul 1997 |
| 7 | Rio Petroleum, Inc. | Amarillo, TX 79102 | Oil & Gas Operator | Oct 2025 |
| 8 | Roberts & Hammack, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Oct 2025 |
| 9 | Rogers Drilling Co. | Olney, TX 76374 | Oil & Gas Operator | Oct 2025 |
| 10 | Roon Energy, Inc. | Dickinson, TX 77539 | Oil Operator | Oct 2025 |
| 11 | Royalty Resources, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 12 | RRR Exploration, Inc. | Dallas, TX 75247 | Oil & Gas Operator | May 1994 |
| 13 | Rust Oil Corp. | Fort Worth, TX 76108 | Oil & Gas Operator | Oct 2025 |
| 14 | Ryder Scott Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2005 |
Production numbers shown above are only for Hardeman County, TX and for the production period listed.