| 301 | Woodward Disposal Company Inc | Woodward, OK 73801-3234 | Oil & Gas Operator | Sep 2013 |
| 302 | Woodward Iodine Corporation | Woodward, OK 73802-1245 | Oil & Gas Operator | Mar 2024 |
| 303 | Woolever Stephen L | Tulsa, OK 74108-2303 | Oil Operator | Jun 2023 |
| 304 | Woolsey Petroleum Corporation | Wichita, KS 67202 | Oil & Gas Operator | Jan 2024 |
| 305 | Work John | Tulsa, OK 74135 | Oil Operator | Dec 1996 |
| 306 | World Oil | | Oil & Gas Operator | Nov 1998 |
| 307 | Worldwide Energy Corp. | Freer, TX 78357 | Oil & Gas Operator | Jan 1997 |
| 308 | Worrall Engineering | | Oil & Gas Operator | Mar 2005 |
| 309 | Worstell Michael H | Collinsville, OK 74021-5918 | Oil Operator | Mar 2015 |
| 310 | Worstell Oil & Gas Company | Collinsville, OK 74021 | Oil Operator | Nov 2005 |
| 311 | Worstell Oil Co LLC | | Oil Operator | Aug 2023 |
| 312 | Worthy George Disposal Inc | Cushing, OK 74023-9523 | Oil Operator | Jan 2001 |
| 313 | WP Oil LLC | | Oil Operator | Feb 2024 |
| 314 | WPX Energy Mid-Continent Co | Oklahoma City, OK 73102-5010 | Oil & Gas Operator | Apr 2016 |
| 315 | WR Oil & Gas LLC | | Oil & Gas Operator | Mar 2024 |
| 316 | Wrather Jr J D | Beverly Hills, CA 90210-4724 | Oil & Gas Operator | Mar 1993 |
| 317 | Wright Jerry L | Crescent, OK 73028-0474 | Oil & Gas Operator | Jun 2013 |
| 318 | Wright Katherine E | Tulsa, OK 74114-1229 | Oil Operator | Sep 2019 |
| 319 | Wright Operating, Inc. | Denison, TX 75020 | Oil & Gas Operator | May 2024 |
| 320 | Wright Richard | Ratliff City, OK 73481-0155 | Oil & Gas Operator | Mar 2015 |
| 321 | Wright V Gerald | Cushing, OK 74023 | Oil & Gas Operator | Nov 2003 |
| 322 | WW Park 51 LLC | | Oil Operator | Feb 2024 |
| 323 | Wyant & O'Keefe | Santa Fe, NM 87501 | Oil & Gas Operator | May 2006 |
| 324 | Wyatt Rick | Pawhuska, OK 74056 | Oil & Gas Operator | Feb 2006 |
| 325 | Wyatt'S Oil Corporation | Pawhuska, OK 74056 | Oil & Gas Operator | Feb 2024 |
| 326 | Wylie Henry C | Ratliff City, OK 73481-0102 | Oil Operator | May 2020 |
| 327 | Wynn-Crosby Operating LP | Dallas, TX 75201 | Oil & Gas Operator | Feb 2024 |
| 328 | Wytex Production Corporation | Fort Smith, AR 72903 | Oil & Gas Operator | Jan 2020 |