| 32201 | Zagava, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2026 |
| 32202 | Zajac Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Sep 2026 |
| 32203 | Zam'S Production Company | | Oil Operator | Sep 2004 |
| 32204 | Zama Petro Inc | | Oil & Gas Operator | Dec 2025 |
| 32205 | Zap Oil Company | Nowata, OK 74048-2640 | Oil & Gas Operator | Nov 2005 |
| 32206 | Zapata-Fender, L. L. C. | Tyler, TX 75710 | Oil & Gas Operator | Apr 2001 |
| 32207 | Zargon Oil (ND) Inc. | | Oil & Gas Operator | Jun 2026 |
| 32208 | Zarvona Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 32209 | Zavala Independent Gas, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2007 |
| 32210 | Zavanna Energy Operating, LLC | | Oil & Gas Operator | Jun 2026 |
| 32211 | Zaveri Oil & Gas LTD | Albany, KY 42602 | Oil Operator | Dec 2006 |
| 32212 | Zaza Energy, LLC | Houston, TX 77010 | Oil & Gas Operator | Sep 2026 |
| 32213 | Zca Gas Gathering Co., Inc. | Bartlesville, OK 74003 | Oil & Gas Operator | Apr 2020 |
| 32214 | Zeagler Enterprises, Inc. | | Oil & Gas Operator | Jun 2008 |
| 32215 | Zeal Production Company | Sperry, OK 74073-4714 | Oil & Gas Operator | Jun 2026 |
| 32216 | Zebra Oil And Gas | Lubbock, TX 79423 | Oil & Gas Operator | Aug 2002 |
| 32217 | Zebra Oil Company | El Campo, TX 77437 | Oil & Gas Operator | Sep 2026 |
| 32218 | Zeiders Bros. Oil & Gas Company, L.L.C. | Edmond, OK 73003 | Oil & Gas Operator | May 2026 |
| 32219 | Zeit Exploration Co., Inc. | | Oil & Gas Operator | May 1994 |
| 32220 | Zelaya Oil And Gas, LLC | Premont, TX 78375 | Oil & Gas Operator | Sep 2026 |
| 32221 | Zenergy Operating Co. | | Oil & Gas Operator | Sep 2023 |
| 32222 | Zenergy Operating Company, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2016 |
| 32223 | Zenergy, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2026 |
| 32224 | Zenith Drilling | | Oil & Gas Operator | Aug 1995 |
| 32225 | Zenith Drilling Corporation | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 32226 | Zenith Exploration Co Inc | Washington, PA 15301 | Oil & Gas Operator | Dec 2014 |
| 32227 | Zenith Oil & Gas Inc | MT Gilead, OH 43338 | Oil & Gas Operator | Dec 1999 |
| 32228 | Zenith Oil & Gas, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2026 |
| 32229 | Zenithal LLC | Isonville, KY 41149 | Oil & Gas Operator | Dec 2024 |
| 32230 | Zephyr Lone Star Oper Co.,L.L.C. | Oklahoma City, OK 73118 | Oil & Gas Operator | Sep 2026 |
| 32231 | Zephyr Operating Co LLC | Oklahoma City, OK 73118-6035 | Oil & Gas Operator | Jun 2026 |
| 32232 | Zephyr SWD LLC | Oklahoma City, OK 73118-6035 | Oil Operator | Jun 2026 |
| 32233 | Zercon Oil & Gas, Inc. | | Oil Operator | Oct 2003 |
| 32234 | Zero Mass Mining, LLC | | Oil Operator | Jan 2025 |
| 32235 | Zeta Energy LLC | Ashland, OR 97520 | Oil Operator | Apr 2026 |
| 32236 | Zetetic Partners, LTD. | Georgetown, TX 78626 | Oil Operator | Dec 2018 |
| 32237 | Zgen, Inc. | | Oil & Gas Operator | Jul 1990 |
| 32238 | Zia Energy Inc | The Woodlands, TX 77380 | Oil & Gas Operator | May 2005 |
| 32239 | Zia Minerals LTD Co | Andrews, TX 79714 | Oil & Gas Operator | Sep 1996 |
| 32240 | Zickefoose, R. L. And W.F. | Burgettstown, PA 15021 | Oil & Gas Operator | Dec 2021 |
| 32241 | Ziegler-Peru, Inc. | Houston, TX 77027 | Oil & Gas Operator | Dec 2019 |
| 32242 | Zilkha Energy Company | Houston, TX 77046 | Oil & Gas Operator | Oct 2002 |
| 32243 | Zilkha Energy Inc | Houston, TX 77002-5223 | Oil & Gas Operator | Dec 2008 |
| 32244 | Zim Energy Corporation | Tulsa, OK 74153 | Oil & Gas Operator | Jan 1998 |
| 32245 | Zimco (Robt A Zimmerman) | Wolf Point, MT 59201 | Oil Operator | Apr 2009 |
| 32246 | Zimmerman Oil & Gas Exploration, Inc. | Houston, TX 77208 | Oil & Gas Operator | Jun 2026 |
| 32247 | Zimmerman, Aaron W. | Penn Yan, NY 14527 | Gas Operator | Dec 2025 |
| 32248 | Zimmerman, IVan L. & Lois N. | Penn Yan, NY 14527 | Gas Operator | Dec 2025 |
| 32249 | Zimmerman, Jon C., II | Freeland, MI 48623 | Gas Operator | Dec 2025 |
| 32250 | Zimmerman, Wayne W. And Pauline R. | Penn Yan, NY 14527 | Gas Operator | Dec 2025 |
| 32251 | Zimtex Energy LLC | Perryton, TX 79070-5818 | Oil & Gas Operator | Nov 2017 |
| 32252 | Zingara Grimes, LLC | Dallas, TX 75205 | Oil & Gas Operator | Sep 2026 |
| 32253 | Zink Petroleum Corp | Uniontown, OH 44685 | Oil & Gas Operator | Dec 1993 |
| 32254 | Zinke & Trumbo L | | Oil & Gas Operator | Nov 2000 |
| 32255 | Zinke & Trumbo LTD | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2017 |
| 32256 | Zinke & Trumbo, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2007 |
| 32257 | Zinn Petroleum Co. | Houston, TX 77024 | Oil & Gas Operator | Nov 2021 |
| 32258 | Zinszer Oil Co., Inc. | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 32259 | Zinszer Oil Comp | | Oil Operator | Aug 1985 |
| 32260 | Zion Energy Corporation | Peru, KS 67360 | Oil Operator | Aug 2000 |
| 32261 | Zittel, Kenneth D. | Springville, NY 14141 | Gas Operator | Dec 2025 |
| 32262 | Zivney Energy | White Oak, TX 75693 | Oil & Gas Operator | Sep 2026 |
| 32263 | ZK Petroleum Co., L.L.C. | Houston, TX 77057 | Oil Operator | Sep 2026 |
| 32264 | Zlab, Adolph | Yates Center, KS 66783 | Oil Operator | Jul 1997 |
| 32265 | Zlomek, John | Belmont, NY 14813 | Oil & Gas Operator | Dec 2024 |
| 32266 | Zoandra Petroleu | | Oil & Gas Operator | May 1993 |
| 32267 | Zoe Oil & Energy, LP | Watauga, TX 76148 | Oil & Gas Operator | Sep 2026 |
| 32268 | Zogreo Energy Inc. | Rockwall, TX 75087 | Oil Operator | Sep 2026 |
| 32269 | Zoller & Danneberg Inc | Denver, CO 80203 | Oil & Gas Operator | May 1975 |
| 32270 | Zollinger Veldon | Cresent, OK 73028 | Oil & Gas Operator | Apr 2009 |
| 32271 | Zollinger Veldon Inc | Crescent, OK 73028-9280 | Oil & Gas Operator | Nov 2018 |
| 32272 | Zonal Holding Corp. | | Oil Operator | Dec 1998 |
| 32273 | Zone Energy, LLC | Houston, TX 77251 | Oil & Gas Operator | Jan 2025 |
| 32274 | Zoran Oil & Gas Co | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2025 |
| 32275 | Zorger, Gerald W. | Wichita, KS 67202 | Oil & Gas Operator | Apr 1985 |
| 32276 | Zorra Oil & Gas | Dilley, TX 78017 | Oil & Gas Operator | Sep 2026 |
| 32277 | ZP Disposal Systems LLC | Kingfisher, OK 73750 | Oil Operator | Jun 2026 |
| 32278 | ZSX, Inc. | Corsicana, TX 75110 | Oil & Gas Operator | Jul 1997 |
| 32279 | ZTC Petro Investments LP | Houston, TX 77056 | Oil & Gas Operator | May 2020 |
| 32280 | ZTH Operating, LLC | Troup, TX 75789 | Oil & Gas Operator | Sep 2026 |
| 32281 | Zu, LLC | Hays, KS 67601 | Oil Operator | Apr 2026 |
| 32282 | Zuhone William H | Mattoon, IL 61938-4019 | Oil & Gas Operator | Jan 2015 |
| 32283 | Zukowski, Eve | Springville, NY 14141 | Gas Operator | Dec 2025 |
| 32284 | Zumyers Inc | Newalla, OK 74857-0259 | Oil Operator | Apr 2003 |
| 32285 | Zynergy LLC | | Oil Operator | Dec 2025 |
| 32286 | ZZ Energy LLC | Norman, OK 73070 | Gas Operator | May 2026 |
| 32287 | Zzron Inc. | Midland, TX 79704 | Oil & Gas Operator | Aug 2003 |