| 201 | G & F Oil, Inc. | Aledo, TX 76008 | Oil & Gas Operator | Oct 2025 |
| 202 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 203 | G-3 Oil | Albany, TX 76430 | Oil & Gas Operator | Jul 1995 |
| 204 | Galbraith, Dallas S. | Abilene, TX 79601 | Oil & Gas Operator | Feb 1994 |
| 205 | Gem Oil Company | Albany, TX 76430 | Oil & Gas Operator | Sep 2002 |
| 206 | Genie Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 207 | Geonatural Resources, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 208 | Geosurveys, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 209 | Ginnings Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2025 |
| 210 | Glahn Resources, Inc. | Arlington, TX 76003 | Oil & Gas Operator | Oct 2025 |
| 211 | Glass, Theodore G. | Dallas, TX 75248 | Oil & Gas Operator | Oct 2025 |
| 212 | Global Drilling, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 213 | Glover, Michael C. | Albany, TX 76430 | Oil & Gas Operator | Nov 2013 |
| 214 | Golden Horse Group Corp. | Houston, TX 77082 | Oil Operator | Oct 2025 |
| 215 | Gordon B Services LLC | Eastland, TX 76448 | Oil & Gas Operator | Oct 2025 |
| 216 | Gosa Oil Company | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 217 | Gould Energy Co. | Owasso, OK 74055 | Oil & Gas Operator | Mar 2005 |
| 218 | Gramrich Oil & Gas Corporation | Coppell, TX 75019 | Oil & Gas Operator | Oct 2012 |
| 219 | Grand Energy, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Oct 2002 |
| 220 | Gray Oil & Gas Inc. | Abilene, TX 79606 | Oil & Gas Operator | Oct 2013 |
| 221 | Gray, Mark W. Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Aug 2003 |
| 222 | Grayrock Energy II, LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Oct 2025 |
| 223 | Graystone Exploration Corp. | Garland, TX 75043 | Oil & Gas Operator | Aug 2003 |
| 224 | Greasewood Oil Company | Midland, TX 79705 | Oil & Gas Operator | Jul 2007 |
| 225 | Great American Resources Inc. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2025 |
| 226 | Green, Hugh | Albany, TX 76430 | Oil & Gas Operator | Apr 2012 |
| 227 | Green, Michael Oil | Albany, TX 76430 | Oil Operator | Oct 2025 |
| 228 | Griffin Resources | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2003 |
| 229 | Grothe Bros. | Albany, TX 76430 | Oil & Gas Operator | May 2011 |
| 230 | Grothe Bros., Inc. | Slaton, TX 79364 | Oil & Gas Operator | Oct 2025 |
| 231 | Grothe, M. L. Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Jun 2010 |
| 232 | Grothe, M.L. Est. | Slaton, TX 79364 | Oil & Gas Operator | Oct 2025 |
| 233 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 234 | GT Productions | Euless, TX 76040 | Oil & Gas Operator | Jan 1997 |
| 235 | Guidance Oil Developers | Boerne, TX 78006 | Oil & Gas Operator | Oct 2025 |
| 236 | Gunner Energy Corp. | Troy, MI 48083 | Oil & Gas Operator | Jun 1995 |
| 237 | H.A.N. Operating Incorporated | Clyde, TX 79510 | Oil & Gas Operator | Aug 2016 |
| 238 | Hair, Roger D. | Post, TX 79356 | Oil & Gas Operator | Oct 2025 |
| 239 | Harding Well Service Co. | Coahoma, TX 79511 | Oil & Gas Operator | Aug 2003 |
| 240 | Harris, Sam E. | Albany, TX 76430 | Oil & Gas Operator | Aug 2003 |
| 241 | Harvick, George R. | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 242 | Hatcher, Ray | Burkburnett, TX 76354 | Oil & Gas Operator | Jun 2002 |
| 243 | Hawk-Hill Operating Company, LLC | Plano, TX 75093 | Oil & Gas Operator | Jun 2009 |
| 244 | Hawkins Oil & Gas Company | Richardson, TX 75080 | Oil & Gas Operator | Oct 2025 |
| 245 | Heights Energy Corporation | Plano, TX 75026 | Oil & Gas Operator | Oct 2025 |
| 246 | Herencia Operating LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 2025 |
| 247 | HGN Operating I, LLC | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 248 | Hilltex Operating Company, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jul 2021 |
| 249 | Hindman, E. C. Jr. Partnership | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2008 |
| 250 | Hofco, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 251 | Hoffmann Oil Company | Eastland, TX 76448 | Oil & Gas Operator | Oct 2025 |
| 252 | Hogan, Wayne Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Jun 2006 |
| 253 | Holcomb Enterprises | Clyde, TX 79510 | Oil & Gas Operator | Aug 2003 |
| 254 | Holden Oil & Gas | Abilene, TX 79608 | Oil & Gas Operator | Dec 2024 |
| 255 | Holson Well Service | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 256 | Horizon Natural Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2024 |
| 257 | Houghton Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2009 |
| 258 | Hughes & Patterson Oper. Corp. | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 259 | Humber Oil Company | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 260 | Humphrey, Thos.D. Oil Prop.,Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Aug 1999 |
| 261 | Humphrey-Bashford Oil, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Sep 2010 |
| 262 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 263 | Hunt Operating, LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 264 | Huson Corp. | Albany, TX 76430 | Oil & Gas Operator | May 2003 |
| 265 | I.T. Corporation | Arlington, TX 76016 | Oil & Gas Operator | Oct 2025 |
| 266 | Ica Energy Operating, L.L.C. | Odessa, TX 79760 | Oil & Gas Operator | Oct 2025 |
| 267 | Ikard, Alan | Electra, TX 76360 | Oil & Gas Operator | Oct 2025 |
| 268 | Integras Operating, LLC | Irving, TX 75062 | Oil & Gas Operator | Oct 2025 |
| 269 | Ipact | Austin, TX 78734 | Oil & Gas Operator | Oct 2025 |
| 270 | Iron Horse Oil & Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 271 | J & J Trading | Abilene, TX 79608 | Oil & Gas Operator | Dec 2004 |
| 272 | J & R Producing Co. | Plano, TX 75024 | Oil & Gas Operator | Dec 2012 |
| 273 | J & TG, LLC | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 274 | J & W Oil Co.-W. F. | Eastland, TX 76448 | Oil & Gas Operator | Oct 2025 |
| 275 | J G Oil & Gas | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 276 | J W Oil Co. | Cisco, TX 76437 | Oil & Gas Operator | Oct 2025 |
| 277 | Jack Oil Company | Baird, TX 79504 | Oil & Gas Operator | Apr 1994 |
| 278 | Jackson, Jeral W. Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2004 |
| 279 | Jacobs, C. E., Co. | Albany, TX 76430 | Oil & Gas Operator | Sep 2022 |
| 280 | Jena Operating Company, Inc. | Dallas, TX 75367 | Oil & Gas Operator | May 2007 |
| 281 | Jenn Oil | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 282 | JM Energy, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2020 |
| 283 | JNS Production, LLC | Albany, TX 76430 | Oil Operator | Oct 2025 |
| 284 | Jobe, B. M. | El Paso, TX 79930 | Oil & Gas Operator | Oct 2025 |
| 285 | Jones Company, LTD. | Albany, TX 76430 | Oil & Gas Operator | May 1999 |
| 286 | Jones, Jansen M. | Albany, TX 76430 | Oil & Gas Operator | Jul 2009 |
| 287 | JQL Energy, LLC | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 288 | JTC Royalties LLC | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 289 | Just Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 290 | Kadane Corporation | Dallas, TX 75205 | Oil & Gas Operator | Oct 2025 |
| 291 | Karper Company, The | Graham, TX 76450 | Oil & Gas Operator | Feb 2003 |
| 292 | Karper Oil & Gas Corporation | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 293 | Kasle Energy Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Mar 2017 |
| 294 | KC Resources Inc | Snowmass VLG., CO 81615 | Oil & Gas Operator | Jun 2025 |
| 295 | Keating Energy, Inc. | Ambler, PA 19002 | Oil & Gas Operator | Oct 2025 |
| 296 | Kelt Oil & Gas, Inc. | Torrance, CA 90503 | Oil & Gas Operator | Dec 2003 |
| 297 | Kendrick Oil And Gas Company | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 298 | Kendrick Oil Co. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2008 |
| 299 | Killion Well Service Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2014 |
| 300 | Kilpatrick Production Company | Tye, TX 79563 | Oil & Gas Operator | Oct 2025 |