| 4701 | Winder Oil Company | | Oil Operator | Mar 2025 |
| 4702 | Windgate Oil Com | | Oil Operator | Jul 1985 |
| 4703 | Windler-Doudna, A General Partnership | | Oil Operator | Sep 2000 |
| 4704 | Wineland Oil - LLC | Hays, KS 67601 | Oil Operator | Mar 2025 |
| 4705 | Winona Oil & Gas | | Oil & Gas Operator | Sep 1996 |
| 4706 | Winterscheid Oil, LLC | Olpe, KS 66865 | Oil Operator | Dec 2019 |
| 4707 | Wintershall Oil | | Oil Operator | Sep 1985 |
| 4708 | Wirtz Oil, LLC | Ellinwood, KS 67526 | Oil & Gas Operator | Mar 2025 |
| 4709 | Wise, Rodney J. | Anna, OH 45302 | Oil Operator | Jul 2011 |
| 4710 | Witcraft, Jimmy D. | Pawhuska, OK 74056 | Oil & Gas Operator | Jun 1987 |
| 4711 | Withers, Lawrence | Copeland, KS 67837 | Gas Operator | Nov 1996 |
| 4712 | Wixson R J Compa | | Oil Operator | Jan 1989 |
| 4713 | Wixson, R. J., Co. | Wichita, KS 67278 | Oil Operator | Oct 2002 |
| 4714 | WM KS Energy Resources LLC | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2019 |
| 4715 | Woco, Inc. | Wichita, KS 67214 | Oil Operator | Dec 2009 |
| 4716 | Wolfe Jimmy Ray | | Oil Operator | Nov 1995 |
| 4717 | Wolfe, Jimmy Ray, Deceased | Peru, KS 67360 | Oil Operator | Sep 2009 |
| 4718 | Wolfe, Leslie | Peru, KS 67360 | Oil Operator | Dec 2014 |
| 4719 | Wolfe, Ray | Longton, KS 67352 | Oil Operator | Jul 1988 |
| 4720 | Wollard-Abbott Crude, A General Partnership | Parker, KS 66072 | Oil Operator | May 2008 |
| 4721 | Womelsdorf Oil | Welda, KS 66091 | Oil Operator | Apr 1999 |
| 4722 | Wood Energy, Inc. | Mount Vernon, IL 62864 | Oil Operator | Mar 2025 |
| 4723 | Wood McShane & T | | Oil Operator | Nov 1987 |
| 4724 | Wood, Donald E. | Independence, KS 67301 | Oil & Gas Operator | Dec 2024 |
| 4725 | Wood, E. H., Jr. | Wichita, KS 67202 | Oil & Gas Operator | Sep 2010 |
| 4726 | Woodman & Iannit | | Oil & Gas Operator | Sep 1996 |
| 4727 | Woodman & Iannitti Oil Company | Great Bend, KS 67530 | Oil & Gas Operator | Jan 2003 |
| 4728 | Woods Oil | | Oil Operator | Mar 2025 |
| 4729 | Woolsey Operating Company, LLC | Wichita, KS 67226 | Oil & Gas Operator | Mar 2025 |
| 4730 | Woolsey Petroleum Corporation | Wichita, KS 67202 | Oil & Gas Operator | Mar 2025 |
| 4731 | Worldwide Energy | | Oil & Gas Operator | May 1989 |
| 4732 | Worsham Petroleum | Denver, CO 80209 | Gas Operator | Aug 2001 |
| 4733 | Worth Drilling | | Oil Operator | Jun 1993 |
| 4734 | Wren Investments | | Oil Operator | Feb 1991 |
| 4735 | Wrestler Ronald | | Oil Operator | Dec 1994 |
| 4736 | Wrestler, David L., A General Partnership | Humboldt, KS 66748 | Oil Operator | Mar 2025 |
| 4737 | Wrestler, Ronald D., A General Partnership | Elsmore, KS 66732 | Oil Operator | Sep 2024 |
| 4738 | Wright, Erbe & Oil Assoc.& Tubbs | Thayer, KS 66776 | Oil Operator | Apr 2005 |
| 4739 | Wykoma Oil Incor | | Oil & Gas Operator | Jul 1990 |
| 4740 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Jul 2025 |
| 4741 | Xanadu Exploration Company | Broken Arrow, OK 74014 | Oil & Gas Operator | May 2025 |
| 4742 | Xenex Incorporat | | Oil Operator | Mar 1991 |
| 4743 | Xenia Corporation, The | Garnett, KS 66032 | Oil Operator | Jan 2001 |
| 4744 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 4745 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 4746 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Jul 2025 |
| 4747 | Yager Company | Hutchinson, KS 67502 | Oil & Gas Operator | Dec 2000 |
| 4748 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | May 2025 |
| 4749 | Yearout, Dwain L. | South Haven, KS 67140 | Oil Operator | Feb 2025 |
| 4750 | Yellow Rose Energy, Inc. | Cottonwood Falls, KS 66845 | Gas Operator | Oct 1999 |
| 4751 | Yocham Oil Company | | Oil Operator | Mar 2025 |
| 4752 | Yoder Oil Compan | | Oil Operator | Sep 1988 |
| 4753 | Yoder, Alvin G. | Welda, KS 66091 | Oil Operator | Dec 2024 |
| 4754 | Yost Oil Operati | | Oil Operator | Jul 1990 |
| 4755 | Yost Oil Operations, Inc. | Russell, KS 67665 | Oil Operator | May 1999 |
| 4756 | Yost, M. A. | Russell, KS 67665 | Oil Operator | Aug 1990 |
| 4757 | Young Petroleum Service, LLC | Wichita, KS 67212 | Oil & Gas Operator | Sep 2023 |
| 4758 | Young, Harvey L. | Erie, KS 66733 | Oil Operator | Feb 2008 |
| 4759 | Younger Bernard | | Oil Operator | Nov 1992 |
| 4760 | Younger Energy C | | Oil & Gas Operator | Dec 1996 |
| 4761 | Younger Energy Company | Wichita, KS 67206 | Oil & Gas Operator | Jul 2025 |
| 4762 | Yucca Petroleum | | Gas Operator | Jan 1994 |
| 4763 | Yukon Properties LLC | Villa Park, CA 92861 | Oil & Gas Operator | Sep 2017 |
| 4764 | Yuma Oil Company | El Dorado, KS 67042 | Oil Operator | Apr 1993 |
| 4765 | Z & L Oil LLC | Longton, KS 67352 | Oil Operator | Mar 2025 |
| 4766 | Zeiders Bros Oil & Gas Co LLC | Edmond, OK 73003 | Oil & Gas Operator | Apr 2025 |
| 4767 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | May 2025 |
| 4768 | Zenith Drilling | | Oil & Gas Operator | Aug 1995 |
| 4769 | Zenith Drilling Corporation | Wichita, KS 67206 | Oil & Gas Operator | Mar 2025 |
| 4770 | Zeta Energy LLC | Ashland, OR 97520 | Oil Operator | Mar 2025 |
| 4771 | Zetetic Partners, LTD. | Georgetown, TX 78626 | Oil Operator | Dec 2018 |
| 4772 | Zinke & Trumbo L | | Oil & Gas Operator | Nov 2000 |
| 4773 | Zinszer Oil Co., Inc. | Hays, KS 67601 | Oil Operator | Dec 2019 |
| 4774 | Zinszer Oil Comp | | Oil Operator | Aug 1985 |
| 4775 | Zlab, Adolph | Yates Center, KS 66783 | Oil Operator | Jul 1997 |
| 4776 | Zoandra Petroleu | | Oil & Gas Operator | May 1993 |
| 4777 | Zorger, Gerald W. | Wichita, KS 67202 | Oil & Gas Operator | Apr 1985 |
| 4778 | Zu, LLC | Hays, KS 67601 | Oil Operator | Mar 2025 |