| 801 | Tony Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2025 |
| 802 | Toomey Oil Company Inc | Tulsa, OK 74120 | Oil & Gas Operator | Feb 2025 |
| 803 | Topco Inc | Tulsa, OK 74105 | Oil & Gas Operator | Nov 2005 |
| 804 | Trace Operating Co & R Hudson | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2013 |
| 805 | Trailblazer Energy LLC | Plano, TX 75075 | Oil & Gas Operator | Jan 2025 |
| 806 | Trans Atlantic Resource Corp | Tulsa, OK 74136-5709 | Oil & Gas Operator | Nov 1998 |
| 807 | Trey Resources Inc. | Midland, TX 79710 | Oil & Gas Operator | Jan 2025 |
| 808 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 809 | Tsalta Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 1998 |
| 810 | Tucker Tim | Hominy, OK 74035 | Oil Operator | Jan 2025 |
| 811 | Turner Jeff | Marlow, OK 73055 | Oil & Gas Operator | Apr 2007 |
| 812 | Twisted Oak Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2025 |
| 813 | Two Pines | Drumright, OK 74030-5502 | Oil & Gas Operator | Feb 2012 |
| 814 | Tyler Oil Company | Billings, MT 59104-3203 | Oil & Gas Operator | Nov 2019 |
| 815 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 816 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 817 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2025 |
| 818 | United Energy Develop Co LTD | Bartlesville, OK 74003 | Oil Operator | Mar 2004 |
| 819 | Universal Drilling Co., Inc. | Denver, CO 80203 | Oil & Gas Operator | Sep 2003 |
| 820 | Valiant Oil & Inv Co | | Oil & Gas Operator | Jan 2025 |
| 821 | Van Dall, Don | | Oil Operator | Mar 2015 |
| 822 | Van Horn I H | Tulsa, OK 74145-5715 | Oil & Gas Operator | Mar 2001 |
| 823 | Vancol Oil Co Inc | Ponca City, OK 74602-0030 | Oil & Gas Operator | May 2018 |
| 824 | Vantage Point Operating Co | Houston, TX 77057 | Oil & Gas Operator | Dec 2014 |
| 825 | VD Oil Company LLC | Bartlesville, OK 74003-4280 | Oil Operator | Jan 2025 |
| 826 | W & W Oil & Gas LLC | Wynona, OK 74084 | Oil Operator | Jan 2025 |
| 827 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 828 | Wall Shelby | | Oil & Gas Operator | Oct 1998 |
| 829 | Walter E & Bernice N Darnall | | Oil Operator | Jan 2025 |
| 830 | Wandering Star Partners #1 LLLP | | Oil & Gas Operator | Apr 2015 |
| 831 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | Apr 2025 |
| 832 | Warrior Exploration & Production LLC | Barnsdall, OK 74002 | Oil & Gas Operator | Jan 2025 |
| 833 | Warrior Exploration LLC | Sapulpa, OK 74067-1912 | Oil & Gas Operator | Dec 2024 |
| 834 | Wassom, Claude J | | Oil & Gas Operator | May 2013 |
| 835 | Wave Energy LLC | Jennings, OK 74038 | Oil Operator | Feb 2025 |
| 836 | Wayona Oil & Gas | Ponca City, OK 74601 | Oil Operator | May 2011 |
| 837 | Wayside LTD | | Oil & Gas Operator | Jan 2015 |
| 838 | Weins Horton L | Sand Springs, OK 74063 | Oil & Gas Operator | Jan 2025 |
| 839 | Wellco Energy Inc | Harrah, OK 73045 | Oil & Gas Operator | Jan 2025 |
| 840 | Wells Allen W | Barnsdall, OK 74002 | Oil & Gas Operator | Jan 2025 |
| 841 | Wells Jimme D | Ponca City, OK 74604 | Oil Operator | Jan 2025 |
| 842 | Westamerica Corporation | Dewey, OK 74029-0040 | Oil & Gas Operator | Aug 1999 |
| 843 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Jan 2025 |
| 844 | Whiteman Industries, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Jun 2024 |
| 845 | WHR Corp | Independence, KS 67301 | Oil & Gas Operator | Jul 2014 |
| 846 | Wikel David | Hominey, OK 74035 | Oil Operator | Jan 2025 |
| 847 | Wildfire Oil & Gas, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2014 |
| 848 | Williams Brothers Engineering Company | Tulsa, OK 74134-5885 | Oil & Gas Operator | May 2013 |
| 849 | Williams Doyle Dba BCF Gas | Tulsa, OK 74114-7099 | Oil & Gas Operator | Jul 2023 |
| 850 | Williams, Doyle | | Oil & Gas Operator | Jan 2025 |
| 851 | Williamson Ozella | Skiatook, OK 74070 | Oil Operator | Aug 2013 |
| 852 | Wilson W Robert | Pawhuska, OK 74056 | Oil & Gas Operator | Jan 2025 |
| 853 | Wilson Warren | Goodwell, OK 73939 | Oil Operator | Jan 2025 |
| 854 | Wise James W | Okmulgee, OK 74447 | Oil & Gas Operator | Oct 1996 |
| 855 | WLW Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Feb 2025 |
| 856 | Worstell Michael H | Collinsville, OK 74021-5918 | Oil Operator | Mar 2015 |
| 857 | Worstell Oil & Gas Company | Collinsville, OK 74021 | Oil Operator | Nov 2005 |
| 858 | Worstell Oil Co LLC | Collinsville, OK 74021-5918 | Oil Operator | Sep 2024 |
| 859 | WP Oil LLC | Owasso, OK 74055 | Oil Operator | Jan 2025 |
| 860 | Wyant & O'Keefe | Santa Fe, NM 87501 | Oil & Gas Operator | May 2006 |
| 861 | Wyatt Rick | Pawhuska, OK 74056 | Oil & Gas Operator | Feb 2006 |
| 862 | Wyatt'S Oil Corporation | Pawhuska, OK 74056 | Oil & Gas Operator | Jan 2025 |
| 863 | Xanadu Exploration Company | Broken Arrow, OK 74014 | Oil & Gas Operator | Feb 2025 |
| 864 | Xutapa Properties LLC | Pawhuska, OK 74056 | Oil & Gas Operator | Jan 2025 |
| 865 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Feb 2025 |
| 866 | Yates Oil | Pawhuska, OK 74056 | Oil Operator | Mar 2015 |
| 867 | Young Stanton L | Oklahoma City, OK 73118 | Oil & Gas Operator | Nov 2014 |
| 868 | Young, Marshall R., Oil Co. | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2011 |
| 869 | Younger Enterprises Inc | Ada, OK 74821-1882 | Oil Operator | Jan 2003 |
| 870 | Zca Gas Gathering Co., Inc. | Bartlesville, OK 74003 | Oil & Gas Operator | Apr 2020 |
| 871 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2025 |
| 872 | Zinke & Trumbo LTD | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2017 |
| 873 | Zuhone William H | Mattoon, IL 61938-4019 | Oil & Gas Operator | Jan 2015 |