| 901 | Wilkins L L E & O Company | Shawnee, OK 74801 | Oil & Gas Operator | Aug 2018 |
| 902 | Wilkinson George R | St Augustine, FL 32080-5352 | Oil & Gas Operator | Jun 2011 |
| 903 | Wilkinson Oil & Gas LLC | Duncan, OK 73533-2048 | Oil Operator | Nov 2025 |
| 904 | William Jefferson Turner | Marlow, OK 73055 | Oil & Gas Operator | Apr 2007 |
| 905 | Williams Dale And Dorothy Family Trust | Maud, OK 74854-2011 | Oil & Gas Operator | Nov 2025 |
| 906 | Williams Operating Company LLC | Comanche, OK 73529 | Oil Operator | Nov 2025 |
| 907 | Williams Reid Oil Co | Dallas, TX 75234 | Oil & Gas Operator | Nov 2025 |
| 908 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Feb 2026 |
| 909 | Williford Petroleum, L.L.C. | Green CV SPGS, FL 32043 | Oil & Gas Operator | Feb 2026 |
| 910 | Williford Resources LLC | Tulsa, OK 74136-1020 | Oil & Gas Operator | Dec 2025 |
| 911 | Wilson Charles R | Durant, OK 74701 | Oil Operator | Sep 2025 |
| 912 | Wilson Claude | Loco, OK 73442-9404 | Oil & Gas Operator | Nov 2025 |
| 913 | Wilson Well Service | Loco, OK 73442-0114 | Oil & Gas Operator | Mar 2018 |
| 914 | Wimberley James A | Dallas, TX 75229-6180 | Oil & Gas Operator | Nov 2014 |
| 915 | Wise Oil & Gas Company LLC | Shawnee, OK 74801-8507 | Oil & Gas Operator | Feb 2024 |
| 916 | Wolverine Exploration Company | Houston, TX 77002 | Oil & Gas Operator | May 2019 |
| 917 | Woods Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 918 | Wright Richard | Ratliff City, OK 73481-0155 | Oil & Gas Operator | Mar 2015 |
| 919 | Wylie Henry C | Ratliff City, OK 73481-0102 | Oil Operator | May 2020 |
| 920 | Xae Corporation | Norman, OK 73072 | Oil & Gas Operator | Apr 2021 |
| 921 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Feb 2026 |
| 922 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Dec 2025 |
| 923 | Yarbrough R E | Lago VIsta, TX 78645-0005 | Oil & Gas Operator | Mar 2015 |
| 924 | Young, John H., Inc. | Houston, TX 77027 | Oil & Gas Operator | Feb 2026 |
| 925 | Zafar Oil & Gas, Inc. | Oklahoma City, OK 73132 | Oil Operator | Aug 2013 |
| 926 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 927 | Zilkha Energy Company | Houston, TX 77046 | Oil & Gas Operator | Oct 2002 |