| 901 | Wandover Charles T SR | Inverness, FL 34452-7527 | Oil & Gas Operator | Dec 2024 |
| 902 | Ware John H III | Bradford, PA 16701-0264 | Gas Operator | Dec 1983 |
| 903 | Warren E & P Inc | Dallas, TX 75240 | Oil & Gas Operator | Nov 2025 |
| 904 | Washington Energy Co LLC | Canonsburg, PA 15317-0400 | Oil & Gas Operator | Dec 2024 |
| 905 | Waste TRMT Corp | Washington, PA 15301-0558 | Oil & Gas Operator | Dec 2024 |
| 906 | WB Prod MGMT Co | Franklin, PA 16323-0107 | Oil & Gas Operator | Dec 2020 |
| 907 | WBM Enterprises | Creekside, PA 15732-8228 | Oil & Gas Operator | Dec 2025 |
| 908 | Weaver Carroll A | Knox, PA 16232 | Oil Operator | Dec 1992 |
| 909 | Weaver Jack | Knox, PA 16232-3243 | Oil & Gas Operator | Dec 2017 |
| 910 | Weinsz Oil & Gas Inc | North Canton, OH 44720 | Oil & Gas Operator | Dec 2003 |
| 911 | Welch Foods Inc A Cooperative | North East, PA 16428-1209 | Gas Operator | Dec 1998 |
| 912 | Weldbank Energy Corp | Warren, PA 16365-5114 | Oil & Gas Operator | Dec 2025 |
| 913 | Werner Oil Farm | Warren, PA 16365-3608 | Oil & Gas Operator | Dec 2025 |
| 914 | Wes Oil & Gas LLC | Clarks Mills, PA 16114-1912 | Gas Operator | Dec 2025 |
| 915 | West Texas Operating Co LLC D/B/A Xtreme Energy Co | Victoria, TX 77902-2326 | Oil & Gas Operator | Nov 2025 |
| 916 | Westinghouse Elec Co LLC | Monroeville, PA 15146-2808 | Gas Operator | Dec 2025 |
| 917 | WGM Gas Co Inc | Creekside, PA 15732-8500 | Oil & Gas Operator | Dec 2025 |
| 918 | WHC Oper LLC | Commodore, PA 15729-9109 | Gas Operator | Dec 2025 |
| 919 | Whidbey Resources Inc | Hudson, OH 44236 | Oil & Gas Operator | Dec 2016 |
| 920 | Whilton Brooks A | Warren, PA 16365-8410 | Oil & Gas Operator | Dec 2024 |
| 921 | White Oak Farms Inc | Dayton, PA 16222-4325 | Gas Operator | Dec 2025 |
| 922 | Whiteford Joseph B | Verona, PA 15147-2726 | Oil & Gas Operator | Dec 2007 |
| 923 | Wilburn Wolfe L | Erie, PA 16506-5039 | Gas Operator | Dec 2000 |
| 924 | Wilkes Energy Inc | Akron, OH 44308 | Oil & Gas Operator | Dec 2022 |
| 925 | Willard M Cline | Bradford, PA 16701-1715 | Oil & Gas Operator | Dec 2022 |
| 926 | William L Horner Energy | Oliveburg, PA 15764-8411 | Gas Operator | Dec 2014 |
| 927 | William M Mauersberg | Sigel, PA 15860-2402 | Oil & Gas Operator | Dec 2009 |
| 928 | William McIntire Coal Oil & Gas | Shelocta, PA 15774-0171 | Oil & Gas Operator | May 2022 |
| 929 | William Southwell & Son Oil LLC | Warren, PA 16365 | Oil & Gas Operator | Dec 2025 |
| 930 | Wilmoth Clark Exploration & Prod LLC | Glen Campbell, PA 15742-0159 | Gas Operator | Dec 2008 |
| 931 | Wilmoth Interests, Inc. | Marion Center, PA 15759 | Oil & Gas Operator | Dec 2025 |
| 932 | Wind River Exploration Inc | Sewickley, PA 15143 | Oil & Gas Operator | Sep 2025 |
| 933 | Windfall Oil & Gas Inc | Falls Creek, PA 15840-2617 | Gas Operator | Dec 2024 |
| 934 | Winfall Energy Inc N V | Vandergrift, PA 15690-2001 | Oil & Gas Operator | Dec 2025 |
| 935 | Wood Drilling LLC | Kittanning, PA 16201 | Gas Operator | Dec 2025 |
| 936 | Wood William C | Kittanning, PA 16201-4328 | Oil & Gas Operator | Dec 2018 |
| 937 | Woodside Michael | Ford City, PA 16226-9714 | Gas Operator | Dec 2019 |
| 938 | XPR Resources LLC | Canonsburg, PA 15317-5862 | Gas Operator | Dec 2025 |
| 939 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Feb 2026 |
| 940 | Yeagle George W | Warren, PA 16365-0924 | Oil Operator | Dec 2010 |
| 941 | Yeany W Byrd Jr | Mayport, PA 16240-1105 | Gas Operator | Dec 2014 |
| 942 | Yellowbird Energy LLC | Canonsburgh, PA 15317 | Gas Operator | Dec 2025 |
| 943 | Yost Duane V | Mount Morris, PA 15349-1331 | Gas Operator | Dec 2025 |
| 944 | Zama Petro Inc | Clinton, WA 98236-0100 | Oil & Gas Operator | Dec 2025 |
| 945 | Zenith Exploration Co Inc | Washington, PA 15301 | Oil & Gas Operator | Dec 2014 |
| 946 | Zilhaver Brian K | Cambridge Springs, PA 16403-4114 | Gas Operator | Dec 2024 |
| 947 | Zoran Oil & Gas Co | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2024 |