| 1901 | Tyluka Operations, LLC | Hays, KS 67601 | Oil Operator | Sep 2025 |
| 1902 | Tyner Texas Operating Company | Dallas, TX 75248 | Oil & Gas Operator | Feb 2026 |
| 1903 | Tyrex Oil Company | Casper, WY 82602 | Oil & Gas Operator | May 1997 |
| 1904 | Tyro Oil Develop | | Oil Operator | Jul 1991 |
| 1905 | Tyrok | | Oil & Gas Operator | Nov 2010 |
| 1906 | Tysco Oil And Gas Corp. | | Oil & Gas Operator | Dec 2024 |
| 1907 | Tyson Gary | Hobart, OK 73651-6413 | Oil & Gas Operator | Mar 2018 |
| 1908 | Tyson Oil Co. | | Oil Operator | Jan 2025 |
| 1909 | Tyson Olan | Hobart, OK 73651-6413 | Oil & Gas Operator | Apr 2015 |
| 1910 | Tytan Operating Company LLC | Edmond, OK 73083-3794 | Oil & Gas Operator | May 2016 |