| 901 | Wilson Charles R | Durant, OK 74701 | Oil Operator | Jul 2025 |
| 902 | Wilson Claude And Ila | Loco, OK 73442-9404 | Oil & Gas Operator | Aug 2025 |
| 903 | Wilson Well Service | Loco, OK 73442-0114 | Oil & Gas Operator | Mar 2018 |
| 904 | Wimberley James A | Dallas, TX 75229-6180 | Oil & Gas Operator | Nov 2014 |
| 905 | Wise Oil & Gas Company LLC | Shawnee, OK 74801-8507 | Oil & Gas Operator | Feb 2024 |
| 906 | Wolverine Exploration Company | Houston, TX 77002 | Oil & Gas Operator | May 2019 |
| 907 | Woods Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 908 | Wright Richard | Ratliff City, OK 73481-0155 | Oil & Gas Operator | Mar 2015 |
| 909 | Wylie Henry C | Ratliff City, OK 73481-0102 | Oil Operator | May 2020 |
| 910 | Xae Corporation | Norman, OK 73072 | Oil & Gas Operator | Apr 2021 |
| 911 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |
| 912 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Sep 2025 |
| 913 | Yarbrough R E | Lago VIsta, TX 78645-0005 | Oil & Gas Operator | Mar 2015 |
| 914 | Young, John H., Inc. | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |
| 915 | Zafar Oil & Gas, Inc. | Oklahoma City, OK 73132 | Oil Operator | Aug 2013 |
| 916 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2025 |
| 917 | Zilkha Energy Company | Houston, TX 77046 | Oil & Gas Operator | Oct 2002 |