| 701 | WGM Gas Co Inc | Creekside, PA 15732-8500 | Oil & Gas Operator | Dec 2023 |
| 702 | Whidbey Resources Inc | Hudson, OH 44236 | Oil & Gas Operator | Dec 2016 |
| 703 | Whilton Brooks A | Warren, PA 16365-8410 | Oil & Gas Operator | Dec 2023 |
| 704 | White Oak Farms Inc | Dayton, PA 16222-4325 | Gas Operator | Dec 2023 |
| 705 | Wilkes Energy Inc | Akron, OH 44308 | Oil & Gas Operator | Dec 2022 |
| 706 | Willard M Cline | Bradford, PA 16701-1715 | Oil & Gas Operator | Dec 2022 |
| 707 | William M Mauersberg | Sigel, PA 15860-2402 | Oil & Gas Operator | Dec 2009 |
| 708 | William McIntire Coal Oil & Gas | Shelocta, PA 15774-0171 | Oil & Gas Operator | May 2022 |
| 709 | William Southwell & Son Oil LLC | Warren, PA 16365 | Oil & Gas Operator | Dec 2023 |
| 710 | Wilmoth Clark Exploration & Prod LLC | Glen Campbell, PA 15742-0159 | Gas Operator | Dec 2008 |
| 711 | Wilmoth Interests, Inc. | Marion Center, PA 15759 | Oil & Gas Operator | Dec 2023 |
| 712 | Wind River Exploration Inc | Sewickley, PA 15143 | Oil & Gas Operator | Dec 2023 |
| 713 | Winfall Energy Inc N V | Vandergrift, PA 15690-2001 | Oil & Gas Operator | Dec 2019 |
| 714 | Wood William C | Kittanning, PA 16201-4328 | Oil & Gas Operator | Dec 2018 |
| 715 | XPR Resources LLC | Canonsburg, PA 15317-5862 | Gas Operator | Jan 2024 |
| 716 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2024 |
| 717 | Yeagle George W | Warren, PA 16365-0924 | Oil Operator | Dec 2010 |
| 718 | Zama Petro Inc | Clinton, WA 98236-0100 | Oil & Gas Operator | Dec 2023 |
| 719 | Zenith Exploration Co Inc | Washington, PA 15301 | Oil & Gas Operator | Dec 2014 |
| 720 | Zoran Oil & Gas Co | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2022 |