| 801 | Wenexco, Inc. | Streetman, TX 75859 | Oil & Gas Operator | Apr 2025 |
| 802 | WFD Oil Corporation | Edmond, OK 73012-0619 | Oil & Gas Operator | Jan 2025 |
| 803 | Wheeler Richard Jr | Oklahoma City, OK 73112-8857 | Oil & Gas Operator | Mar 2005 |
| 804 | White Monty & Terry Production | Paden, OK 74860 | Oil & Gas Operator | May 2013 |
| 805 | White Operating Company | Oklahoma City, OK 73159-7136 | Oil & Gas Operator | Feb 2025 |
| 806 | White Star Petroleum LLC | Oklahoma City, OK 73116-7906 | Oil & Gas Operator | Jan 2025 |
| 807 | Whitley Oil & Gas Inc | Owasso, OK 74055 | Oil & Gas Operator | Jun 2009 |
| 808 | Wil-MC Oil Corporation The | Irving, TX 75015-2510 | Oil & Gas Operator | Mar 1999 |
| 809 | Wildhorse Oil & Gas Corporation | Ardmore, OK 73402 | Oil & Gas Operator | May 2019 |
| 810 | Wilkins L L E & O Company | Shawnee, OK 74801 | Oil & Gas Operator | Aug 2018 |
| 811 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Apr 2025 |
| 812 | Wilshire Oil LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Oct 2024 |
| 813 | Winzeler Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | May 2013 |
| 814 | Witty Thomas E | Enid, OK 73703 | Oil & Gas Operator | Mar 2008 |
| 815 | Worthy George Disposal Inc | Cushing, OK 74023-9523 | Oil Operator | Jan 2001 |
| 816 | Xanadu Exploration Company | Broken Arrow, OK 74014 | Oil & Gas Operator | Feb 2025 |
| 817 | Xutapa Properties LLC | Pawhuska, OK 74056 | Oil & Gas Operator | Jan 2025 |
| 818 | Yarhola Production Company | Drumright, OK 74030 | Oil & Gas Operator | Feb 2025 |
| 819 | Yegen E C | Casper, WY 82604 | Oil & Gas Operator | Mar 2015 |
| 820 | Young Z Joe | Cement, OK 73017-0600 | Oil & Gas Operator | Mar 2015 |
| 821 | Young, John H., Inc. | Houston, TX 77027 | Oil & Gas Operator | Apr 2025 |
| 822 | Zuhone William H | Mattoon, IL 61938-4019 | Oil & Gas Operator | Jan 2015 |