| 201 | Quadrant Exploration, Inc. | Marietta, OH 45750 | Oil & Gas Operator | Dec 2000 |
| 202 | Quaker State Oil Ref Corp | North Canton, OH 44720-1541 | Oil & Gas Operator | Dec 1994 |
| 203 | R C Poling Co Inc | Junction City, OH 43748 | Oil & Gas Operator | Dec 2024 |
| 204 | R H Penick Co LTD | Heath, OH 43056 | Oil & Gas Operator | Dec 2024 |
| 205 | Red Bird Producing Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 206 | Rednet Exploration LLC | Nashport, OH 43830 | Oil Operator | Dec 2024 |
| 207 | Reliance Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2025 |
| 208 | Reliance Oil Corp | Charlottesville, VA 22906 | Oil & Gas Operator | Dec 1988 |
| 209 | Rod Johnson Operations | Miramar Beach, FL 32550 | Oil & Gas Operator | Dec 2015 |
| 210 | Roman Well Services Inc | Lakeville, OH 44638 | Oil & Gas Operator | Dec 2023 |
| 211 | Ruffner Petroleum Corp | Akron, OH 44308 | Oil & Gas Operator | Dec 2000 |
| 212 | Russell E Snider LLC | Newark, OH 43055 | Oil Operator | Dec 2024 |
| 213 | S S S Energy Co | Stow, OH 44224 | Oil & Gas Operator | Dec 1989 |
| 214 | Samples James F | Brinkhaven, OH 43006 | Oil & Gas Operator | Dec 2021 |
| 215 | Schrimsher Oil & Gas Expl | Orlando, FL 32803 | Oil & Gas Operator | Dec 1992 |
| 216 | Scion Energy Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2019 |
| 217 | Scrimgeour Robert | Sterling, VA 22170 | Oil & Gas Operator | Dec 1991 |
| 218 | Shrider W E Co | Newark, OH 43055 | Oil & Gas Operator | Dec 1991 |
| 219 | Smith C/Dba Sandy Supply | North FT Myers, FL 33903 | Oil & Gas Operator | Dec 1988 |
| 220 | Smith Ronald Dba Chipco | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2024 |
| 221 | Snider Brothers | Gratiot, OH 43740 | Oil & Gas Operator | Dec 2015 |
| 222 | Stocker & Sitler Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 2002 |
| 223 | Stonebridge Operating Co LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 224 | T B Drilling Co | Moxahala, OH 43761 | Oil & Gas Operator | Dec 1998 |
| 225 | T JS Oil & Gas Inc | Fresno, OH 43824 | Oil & Gas Operator | Dec 2023 |
| 226 | Terrgin Oil & Gas LLC | Frazeysburg, OH 43822 | Oil & Gas Operator | Dec 2021 |
| 227 | The Edward H Everett Company | Newark, OH 43055 | Oil & Gas Operator | Dec 2024 |
| 228 | Titan Energy Corp | Thomasville, AL 36784 | Oil & Gas Operator | Aug 2009 |
| 229 | Trenmor Gas & Oil Co LLC | Frazeysburg, OH 43822 | Oil Operator | Dec 2022 |
| 230 | Twinoaks Oil & Gas Co | Newark, OH 43058 | Oil & Gas Operator | Dec 2024 |
| 231 | Unity Petroleum | Howard, OH 43028 | Oil & Gas Operator | Dec 2021 |
| 232 | Valley Petroleum Management | Utica, OH 43080 | Oil & Gas Operator | Dec 2024 |
| 233 | Victor McKenzie Drilling Co Inc | Zanesville, OH 43702-3323 | Oil & Gas Operator | Dec 2023 |
| 234 | Viking Resources LLC | Uniontown, OH 44685 | Oil & Gas Operator | Dec 2017 |
| 235 | W K Frost Inc | Newark, OH 43055 | Oil & Gas Operator | Dec 2020 |
| 236 | Wallick Petroleum Co | Reynoldsburg, OH 43068 | Oil & Gas Operator | Dec 1994 |
| 237 | Warner Clifford E | Newark, OH 43055 | Oil Operator | Dec 2022 |
| 238 | Waterco Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2000 |
| 239 | Welsh Hills Oil & Gas Co | Newark, OH 43055 | Oil & Gas Operator | Dec 1999 |
| 240 | Wheeler Michael D | Newark, OH 43055 | Oil & Gas Operator | Dec 2024 |
| 241 | Willey George | Newark, OH 43058 | Oil & Gas Operator | Dec 2024 |
| 242 | Witco Corporation | Newark, OH 43055 | Oil & Gas Operator | Dec 1995 |
| 243 | Wray-Vernau Partnership | Newark, OH 43055 | Oil & Gas Operator | Dec 1988 |
| 244 | Zenith Oil & Gas Inc | MT Gilead, OH 43338 | Oil & Gas Operator | Dec 1999 |