| 201 | Tatum Petroleum Corporation | Zanesville, OH 43702 | Oil & Gas Operator | Dec 2008 |
| 202 | Teagarden David W | Glenford, OH 43739 | Oil & Gas Operator | Dec 2020 |
| 203 | Temple Oil & Gas Co | Crooksville, OH 43731 | Oil & Gas Operator | Dec 2023 |
| 204 | Tiger Oil, Inc. | Canal Wincheste, OH 43110 | Oil & Gas Operator | Dec 2007 |
| 205 | Tipka Bartlo Oil & Gas Co | New Philadelphi, OH 44663 | Oil & Gas Operator | Dec 1988 |
| 206 | Tipka Energy Devlopment Company | New Philadelphi, OH 44663 | Oil & Gas Operator | Dec 2020 |
| 207 | Tipka William N | Dover, OH 44622 | Oil & Gas Operator | Dec 1988 |
| 208 | Titan Energy Corp | Thomasville, AL 36784 | Oil & Gas Operator | Aug 2009 |
| 209 | Trans Atlantic Ener Corp | Caldwell, OH 43724 | Oil & Gas Operator | Dec 1993 |
| 210 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 211 | Unknown Owner | Columbus, OH 43229 | Oil & Gas Operator | Dec 2008 |
| 212 | Utica Resource Operating LLC | Marietta, OH 45750 | Oil & Gas Operator | Sep 2023 |
| 213 | Vanguard Oil & Gas LLC | East Lansing, MI 48826 | Oil & Gas Operator | Dec 2024 |
| 214 | Viking Resources LLC | Uniontown, OH 44685 | Oil & Gas Operator | Dec 2017 |
| 215 | W P Brown Enterprises Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 2024 |
| 216 | Waldron David A | Wooster, OH 44691 | Oil & Gas Operator | Dec 2003 |
| 217 | Waterco Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2000 |
| 218 | Whited Roger | Davisville, WV 26142 | Oil & Gas Operator | Dec 2024 |
| 219 | William S Miller Inc | Hanoverton, OH 44423 | Oil & Gas Operator | Dec 2024 |
| 220 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 221 | WNT Operating Inc | Dover, OH 44622 | Oil & Gas Operator | Dec 2001 |
| 222 | Wood Charles L | Akron, OH 44320 | Oil & Gas Operator | Dec 1990 |
| 223 | Yei Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 1988 |
| 224 | Zilkha Energy Inc | Houston, TX 77002-5223-5223 | Oil & Gas Operator | Dec 2008 |