| 1301 | Gunn Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2025 |
| 1302 | Gunn, P. P., Estate Heirs | | Oil & Gas Operator | Dec 2008 |
| 1303 | Gunner Energy Corp. | Troy, MI 48083 | Oil & Gas Operator | Jun 1995 |
| 1304 | Gunner Oil Company | Wichita, KS 67205 | Oil & Gas Operator | Apr 2025 |
| 1305 | Gunnison Energy Corporation | | Oil & Gas Operator | Jun 2014 |
| 1306 | Gunnison Energy LLC | | Oil & Gas Operator | May 2025 |
| 1307 | Gunsight Energy Inc | Floydada, TX 79235-2521 | Oil Operator | Jun 2009 |
| 1308 | Gunsight Supply Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Aug 2003 |
| 1309 | Gunsmoke Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | May 2012 |
| 1310 | Gunter Jim | Springer, OK 73458 | Oil Operator | Mar 2025 |
| 1311 | Gupton Gas Co. | Fort Worth, TX 76107 | Oil & Gas Operator | Aug 1994 |
| 1312 | Gurley Oil Co | Kirtland, NM 87417 | Oil Operator | Dec 1995 |
| 1313 | Gurnee Gas Co., L.L.C. | | Gas Operator | Jul 2001 |
| 1314 | Gus Jones Cable Tool Service, LLC | Elk City, KS 67344 | Oil Operator | Nov 2024 |
| 1315 | Gusher Oil | | Oil Operator | Jul 2004 |
| 1316 | Gustafson Brothers Inc. | | Oil & Gas Operator | Dec 2002 |
| 1317 | Gustafson Family Trust 2 | Frewsburg, NY 14738 | Gas Operator | Dec 2024 |
| 1318 | Gustafson, Alan | Falconer, NY 14733 | Gas Operator | Dec 2024 |
| 1319 | Gustison Steven | | Oil Operator | Feb 1985 |
| 1320 | Guthrie Clare L And June | | Oil Operator | Nov 2021 |
| 1321 | Guthrie Oil Co | | Oil Operator | Nov 1994 |
| 1322 | Guthrie Oil Comp | | Oil & Gas Operator | Dec 1994 |
| 1323 | Guthrie, A. K. Operating Co. | Big Spring, TX 79720 | Oil & Gas Operator | Mar 1996 |
| 1324 | Guynes And Backus | | Oil Operator | Nov 1999 |
| 1325 | Guys Oil & Gas LTD Co | Hobbs, NM 88241 | Oil & Gas Operator | Dec 2019 |
| 1326 | Guzman Energy Inc. | | Oil & Gas Operator | May 2025 |
| 1327 | GVC Ventures | Mineola, TX 75773 | Oil & Gas Operator | Jun 2025 |
| 1328 | GW Energy, Inc. | Midland, TX 79710 | Oil Operator | Aug 2025 |
| 1329 | GW Petroleum Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 1993 |
| 1330 | GWB Oil & Gas LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 1331 | Gwet, Inc. | Merkel, TX 79536 | Oil Operator | Aug 2025 |
| 1332 | Gwitt, Edward J. | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 1333 | GWM Operating Company, LLC | Sugar Land, TX 77479 | Oil & Gas Operator | Aug 2025 |
| 1334 | Gyb-Britlind Oil, LLC | | Oil & Gas Operator | Jun 2016 |
| 1335 | Gypsy Exploration LLC | Oklahoma City, OK 73123-1323 | Oil & Gas Operator | Dec 2014 |
| 1336 | Gypsy Highview Gathering System, Inc. | Cut Bank, MT 59427-0250 | Oil & Gas Operator | Oct 2000 |
| 1337 | Gypsy Oil Co. | Austin, TX 78720 | Oil & Gas Operator | Jul 2017 |
| 1338 | Gypsyglenn Oil Company LLC | Tulsa, OK 74119-4809 | Oil & Gas Operator | May 2025 |
| 1339 | Gyro Petroleum | Amarillo, TX 79120 | Oil & Gas Operator | Aug 2025 |