| 1 | T B Drilling Co | Moxahala, OH 43761 | Oil & Gas Operator | Dec 1998 |
| 2 | T JS Oil & Gas Inc | Fresno, OH 43824 | Oil & Gas Operator | Dec 2021 |
| 3 | Tatum Petroleum Co LLC | Zanesville, OH 43702 | Oil & Gas Operator | Dec 2018 |
| 4 | Tatum Petroleum Corporation | Zanesville, OH 43702 | Oil & Gas Operator | Dec 2008 |
| 5 | Temple Oil & Gas Co | Crooksville, OH 43731 | Oil & Gas Operator | Dec 2023 |
| 6 | Terrgin Oil & Gas LLC | Frazeysburg, OH 43822 | Oil & Gas Operator | Dec 2021 |
| 7 | The Edward H Everett Company | Newark, OH 43055 | Oil & Gas Operator | Dec 2022 |
| 8 | Thompson Consumer Electronics | Indianapolis, IN 46290 | Oil & Gas Operator | Dec 1998 |
| 9 | Thompson Floyd Oil Co Inc | Boca Raton, FL 44328 | Oil & Gas Operator | Dec 1988 |
| 10 | Tiger Oil, Inc. | Canal Wincheste, OH 43110 | Oil & Gas Operator | Dec 2007 |
| 11 | Tipka Energy Devlopment Company | New Philadelphi, OH 44663 | Oil & Gas Operator | Dec 2020 |
| 12 | Tipka William N | Dover, OH 44622 | Oil & Gas Operator | Dec 1988 |
| 13 | Titan Energy Corp | Thomasville, AL 36784 | Oil & Gas Operator | Aug 2009 |
| 14 | Trenmor Gas & Oil Co LLC | Granville, OH 43023 | Oil Operator | Dec 2022 |
| 15 | Twinoaks Oil & Gas Co | Newark, OH 43058-0764-0764 | Oil & Gas Operator | Dec 2023 |