| 1101 | Swingle Drilling Inc | Crooksville, OH 43731 | Oil & Gas Operator | Dec 2025 |
| 1102 | SWN Production (Ohio), LLC | Spring, TX 77389 | Oil & Gas Operator | Mar 2024 |
| 1103 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Dec 2025 |
| 1104 | T B Drilling Co | Moxahala, OH 43761 | Oil & Gas Operator | Dec 1998 |
| 1105 | T JS Oil & Gas Inc | Fresno, OH 43824 | Oil & Gas Operator | Dec 2023 |
| 1106 | T&T Energy LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2025 |
| 1107 | Talbott Oil & Gas Co | Tuppers Plains, OH 45783 | Oil & Gas Operator | Dec 2000 |
| 1108 | Tansky J/Tansky Oil Prod | Logan, OH 43138 | Oil & Gas Operator | Dec 1997 |
| 1109 | Target Engery Corp | Brecksville, OH 44141 | Oil & Gas Operator | Dec 1992 |
| 1110 | Tatco Petroleum Oper Inc | Canton, OH 44735 | Oil & Gas Operator | Dec 1989 |
| 1111 | Tatum Petroleum Co LLC | Zanesville, OH 43702 | Oil & Gas Operator | Dec 2018 |
| 1112 | Tatum Petroleum Corp | Zanesville, OH 43702 | Oil & Gas Operator | Dec 2008 |
| 1113 | Taylor Lee | MT Gilead, OH 43338 | Oil Operator | Dec 1993 |
| 1114 | Teagarden David W | Glenford, OH 43739 | Oil & Gas Operator | Dec 2020 |
| 1115 | Temple Oil & Gas Co | Crooksville, OH 43731 | Oil & Gas Operator | Dec 2025 |
| 1116 | Tender Equity Corporation | Marietta, OH 45750 | Oil & Gas Operator | Dec 2007 |
| 1117 | Terrascan Drilling Corp | Dublin, OH 43017 | Oil Operator | Dec 2005 |
| 1118 | Terrgin Oil & Gas LLC | Frazeysburg, OH 43822 | Oil & Gas Operator | Dec 2021 |
| 1119 | Tex-Hio Energy | Terrell, TX 75156 | Oil & Gas Operator | Dec 1997 |
| 1120 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 1121 | TGX Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2004 |
| 1122 | The A I Root Company | Medina, OH 44256 | Gas Operator | Dec 2025 |
| 1123 | The East Ohio Gas Company Dba Enbridge Gas Ohio | North Canton, OH 44720 | Oil & Gas Operator | Dec 2025 |
| 1124 | The Edward H Everett Company | Newark, OH 43055 | Oil & Gas Operator | Dec 2025 |
| 1125 | Thomas Oil & Gas Company | Luling, TX 78648 | Oil & Gas Operator | Aug 2003 |
| 1126 | Thomas Steel Strip Corp | Warren, OH 44485 | Oil & Gas Operator | Dec 2025 |
| 1127 | Thompson Consumer Electronics | Indianapolis, IN 46290 | Oil & Gas Operator | Dec 1998 |
| 1128 | Thompson Floyd Oil Co Inc | Boca Raton, FL 44328 | Oil & Gas Operator | Dec 1988 |
| 1129 | Thunder Corp | Marietta, OH 45750 | Oil & Gas Operator | Dec 2014 |
| 1130 | Tiburon Oil & Gas Ohio, LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2026 |
| 1131 | Tiger Oil, Inc. | Canal Wincheste, OH 43110 | Oil & Gas Operator | Dec 2007 |
| 1132 | Tipka Bartlo Oil & Gas Co | New Philadelphi, OH 44663 | Oil & Gas Operator | Dec 1988 |
| 1133 | Tipka Energy Devlopment Company | New Philadelphi, OH 44663 | Oil & Gas Operator | Dec 2020 |
| 1134 | Tipka William N | Dover, OH 44622 | Oil & Gas Operator | Dec 1988 |
| 1135 | Titan Energy Corp | Thomasville, AL 36784 | Oil & Gas Operator | Aug 2009 |
| 1136 | Titan Resources LTD | Limaville, OH 44640 | Oil & Gas Operator | Apr 2026 |
| 1137 | TLC Oil LLC | Holmesville, OH 44633 | Oil & Gas Operator | Dec 2025 |
| 1138 | TMR Operating Co Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 1990 |
| 1139 | Torent Oil & Gas Co | Canfield, OH 44406 | Oil & Gas Operator | Dec 2001 |
| 1140 | Total Minatome Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 1998 |
| 1141 | Trans Atlantic Ener Corp | Caldwell, OH 43724 | Oil & Gas Operator | Dec 1993 |
| 1142 | Transcontinental Oil & Gas Inc | Aurora, OH 44202 | Oil & Gas Operator | Dec 2025 |
| 1143 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 1144 | Transit Energy Inc | North Lawrence, OH 44666 | Oil & Gas Operator | Dec 2025 |
| 1145 | Trenmor Gas & Oil Co LLC | Frazeysburg, OH 43822 | Oil Operator | Dec 2023 |
| 1146 | Tri-City Drilling Joint Venture | Belpre, OH 45714 | Oil & Gas Operator | Dec 2024 |
| 1147 | Triad Hunter, LLC | Spring, TX 77389 | Oil & Gas Operator | Dec 2021 |
| 1148 | Triad Resources Inc | Spring, TX 77389 | Oil & Gas Operator | Dec 2020 |
| 1149 | Triple B Energy LLC | Dorset, OH 44032 | Oil & Gas Operator | Dec 2025 |
| 1150 | Triple Gas Co | Marietta, OH 45750 | Oil & Gas Operator | Dec 1984 |
| 1151 | Tristar Petroleum Resourc | Woodland Hills, CA 89101 | Oil & Gas Operator | Dec 1991 |
| 1152 | Trumbull Resources | Mineral Ridge, OH 44440 | Oil & Gas Operator | Dec 2016 |
| 1153 | Turrill Sheldon L | Westerville, OH 43081 | Oil & Gas Operator | Dec 1984 |
| 1154 | Tussel Clarence Jr | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2019 |
| 1155 | Twinoaks Oil & Gas Co | Newark, OH 43058 | Oil & Gas Operator | Dec 2025 |
| 1156 | Unger Well Drilling Corp | Dennison, OH 44621 | Oil & Gas Operator | Dec 1999 |
| 1157 | Unicorn Oil & Gas Co Inc | Dorset, OH 44032 | Oil & Gas Operator | Dec 1993 |
| 1158 | Union Camp Corp | Dover, OH 44622 | Oil & Gas Operator | Dec 2002 |
| 1159 | Union Oil Co | Danville, OH 43014 | Oil & Gas Operator | Dec 2014 |
| 1160 | United O&G/Atlee Miller | Millersburg, OH 44654 | Oil & Gas Operator | Dec 1985 |
| 1161 | Unity Petroleum | Howard, OH 43028 | Oil & Gas Operator | Dec 2021 |
| 1162 | Universal Exploration Inc | Wadsworth, OH 44281-9460 | Oil & Gas Operator | Feb 2012 |
| 1163 | Unknown Owner | Columbus, OH 43229 | Oil & Gas Operator | Dec 2008 |
| 1164 | Us Energy Oh LLC | Rural Valley, PA 16249 | Oil & Gas Operator | Dec 2025 |
| 1165 | Us Oil & Gas Inc | Marietta, OH 45750 | Oil & Gas Operator | Apr 2026 |
| 1166 | Utica Resource Operating LLC | Marietta, OH 45750 | Oil & Gas Operator | Sep 2023 |
| 1167 | Valentine Oil Properties | Lowell, OH 45744 | Oil & Gas Operator | Dec 1997 |
| 1168 | Valley Petroleum Management | Utica, OH 43080 | Oil & Gas Operator | Dec 2025 |
| 1169 | Valtech Sales LLC | Reno, OH 45773 | Oil & Gas Operator | Dec 2025 |
| 1170 | Vanguard Oil & Gas LLC | East Lansing, MI 48826 | Oil & Gas Operator | Dec 2025 |
| 1171 | Vaught Bill D Dba Vaught Oil Company | Akron, OH 44319 | Oil & Gas Operator | Dec 2024 |
| 1172 | Victor McKenzie Drilling Co Inc | Zanesville, OH 43702-3323 | Oil & Gas Operator | Dec 2023 |
| 1173 | Viking Resources LLC | Uniontown, OH 44685 | Oil & Gas Operator | Dec 2017 |
| 1174 | Virco Inc | Morgantown, WV 26508 | Oil & Gas Operator | Dec 2022 |
| 1175 | W H Patten Drilling Co | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2025 |
| 1176 | W K Frost Inc | Newark, OH 43055 | Oil & Gas Operator | Dec 2020 |
| 1177 | W P Brown Enterprises Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 2025 |
| 1178 | Waddy & Son Oilfield Services Inc | Dellroy, OH 44620-9762 | Oil & Gas Operator | Dec 2025 |
| 1179 | Waldron David A | Wooster, OH 44691 | Oil & Gas Operator | Dec 2003 |
| 1180 | Wallick Petroleum Co | Reynoldsburg, OH 43068 | Oil & Gas Operator | Dec 1994 |
| 1181 | Warner Clifford E | Newark, OH 43055 | Oil Operator | Dec 2022 |
| 1182 | Warner George H | Pomeroy, OH 45769 | Oil & Gas Operator | Dec 2014 |
| 1183 | Warren C J Oil Co | MT Carmel, IL 62863 | Oil & Gas Operator | Dec 1984 |
| 1184 | Warren Drilling Co | Dexter City, OH 45727 | Oil & Gas Operator | Dec 2025 |
| 1185 | Waterco Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2000 |
| 1186 | Watson Wayne W | Cambridge, OH 43725-3024 | Oil & Gas Operator | Dec 2002 |
| 1187 | Wayne Hammond Enterprises Inc | Bolivar, OH 44612 | Oil & Gas Operator | Dec 2024 |
| 1188 | We Energy LLC | Columbus, OH 43229 | Oil Operator | Dec 2020 |
| 1189 | Web Oil Inc | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2013 |
| 1190 | Weber Paul A | N Canton, OH 44720 | Oil & Gas Operator | Dec 1994 |
| 1191 | Weinsz Oil & Gas Inc | North Canton, OH 44720 | Oil & Gas Operator | Dec 2003 |
| 1192 | Weiss Drilling Inc | Jerusalem, OH 43747 | Oil & Gas Operator | Dec 2025 |
| 1193 | Welsh Hills Oil & Gas Co | Newark, OH 43055 | Oil & Gas Operator | Dec 1999 |
| 1194 | Wenner Petroleum Corp | Englewood, CO 80111 | Oil & Gas Operator | Dec 1986 |
| 1195 | Wescor LLC | Hartville, OH 44632 | Oil & Gas Operator | Dec 2025 |
| 1196 | Western Hemisphere Group | Buffalo, NY 14218 | Oil & Gas Operator | Dec 1993 |
| 1197 | Western Reserve Exp | Perry, OH 44081 | Oil & Gas Operator | Dec 2003 |
| 1198 | Western Resources{Wva}Inc | Chantilly, VA 22022 | Oil & Gas Operator | Dec 1994 |
| 1199 | Wheeler Michael D | Newark, OH 43055 | Oil & Gas Operator | Dec 2025 |
| 1200 | Whidbey Resources Inc | Hudson, OH 44236 | Oil & Gas Operator | Dec 2016 |