| 33001 | York & Price Petroleum Corp. | San Antonio, TX 78218 | Oil & Gas Operator | Jul 2004 |
| 33002 | York E & P, LLC | Boling, TX 77420 | Oil & Gas Operator | Feb 2025 |
| 33003 | Yorkshire-Pioneer Central School District | Yorkshire, NY 14173 | Gas Operator | Dec 2023 |
| 33004 | Yost & Yost, Inc. | | Oil & Gas Operator | Dec 2020 |
| 33005 | Yost Energy Inc | | Oil & Gas Operator | Dec 2024 |
| 33006 | Yost Oil Operati | | Oil Operator | Jul 1990 |
| 33007 | Yost Oil Operations, Inc. | Russell, KS 67665 | Oil Operator | May 1999 |
| 33008 | Yost Richard D Dba Yost Inc | | Oil Operator | Aug 2024 |
| 33009 | Yost, Barbra E | | Oil Operator | Dec 2018 |
| 33010 | Yost, M. A. | Russell, KS 67665 | Oil Operator | Aug 1990 |
| 33011 | Yotpolis, Joni L. | Clymer, NY 14724 | Gas Operator | Dec 2023 |
| 33012 | Yotpolis, Rosemarie | Clymer, NY 14724 | Gas Operator | Dec 2023 |
| 33013 | Young H Inc | Edmond, OK 73013 | Oil & Gas Operator | Oct 1993 |
| 33014 | Young Oil Corporation | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2019 |
| 33015 | Young Petroleum Service, LLC | Wichita, KS 67212 | Oil & Gas Operator | Sep 2023 |
| 33016 | Young Resources, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 1999 |
| 33017 | Young Tommy Oil Inc | Woodward, OK 73802-0893 | Oil & Gas Operator | Nov 2024 |
| 33018 | Young Z Joe | Cement, OK 73017-0600 | Oil & Gas Operator | Mar 2015 |
| 33019 | Young Zoral J | Cement, OK 73017 | Oil & Gas Operator | Sep 2000 |
| 33020 | Young, Clint Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2025 |
| 33021 | Young, Harvey L. | Erie, KS 66733 | Oil Operator | Feb 2008 |
| 33022 | Young, John H., Inc. | Houston, TX 77027 | Oil & Gas Operator | Feb 2025 |
| 33023 | Young, L. M. | Brownwood, TX 76804 | Oil & Gas Operator | Aug 2003 |
| 33024 | Young, Marshall R., Oil Co. | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2011 |
| 33025 | Youngberg, Brian Lenn | Forestville, NY 14062 | Gas Operator | Dec 2023 |
| 33026 | Youngblood Enterprises | | Gas Operator | Dec 1983 |
| 33027 | Youngblood Enterprises, Inc. | | Oil & Gas Operator | Jan 1992 |
| 33028 | Youngblood J Lee | Dallas, TX 75221 | Oil & Gas Operator | Feb 1996 |
| 33029 | Youngblood, C. S. III | Pampa, TX 79065 | Oil & Gas Operator | Dec 2001 |
| 33030 | Younger Bernard | | Oil Operator | Nov 1992 |
| 33031 | Younger Energy C | | Oil & Gas Operator | Dec 1996 |
| 33032 | Younger Energy Company | Wichita, KS 67206 | Oil & Gas Operator | Feb 2025 |
| 33033 | Younger Enterprises Inc | Ada, OK 74821-1882 | Oil Operator | Jan 2003 |
| 33034 | Yount Foundation Inc | | Oil Operator | Dec 2023 |
| 33035 | Yturri, Robert & John | San Antonio, TX 78205 | Oil & Gas Operator | Aug 2003 |
| 33036 | Yturria, Frank D. | Brownsville, TX 78520 | Oil & Gas Operator | Mar 2008 |
| 33037 | Yucca Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2025 |
| 33038 | Yucca Petroleum | | Gas Operator | Jan 1994 |
| 33039 | Yukon Exploration Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Feb 2025 |
| 33040 | Yukon Properties LLC | Villa Park, CA 92861 | Oil & Gas Operator | Sep 2017 |
| 33041 | Yuma E & P Company, Inc. | Houston, TX 77027 | Oil & Gas Operator | Feb 2025 |
| 33042 | Yuma Oil Company | El Dorado, KS 67042 | Oil Operator | Apr 1993 |
| 33043 | Yuma Petroleum Company | Houston, TX 77027 | Oil & Gas Operator | Aug 2002 |
| 33044 | Yunker Oil Co. | | Oil & Gas Operator | Dec 1986 |
| 33045 | Yust, C. F. & R. L. | Batson, TX 77519 | Oil & Gas Operator | Sep 2002 |
| 33046 | Z & L Oil LLC | Longton, KS 67352 | Oil Operator | Oct 2024 |
| 33047 | Z & S Construction Co Inc | Kimball, NE 69145 | Oil & Gas Operator | Nov 2024 |
| 33048 | Z C Ambrose-G L Blaxton, Jr. | | Oil & Gas Operator | Mar 1980 |
| 33049 | Z G Operating LLC | Oklahoma City, OK 73134-5038 | Oil & Gas Operator | Nov 2009 |
| 33050 | Z G Exploration Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 2005 |
| 33051 | Z&G Operating | Wichita Falls, TX 76302 | Oil Operator | Sep 2011 |
| 33052 | Z/F Little Buddy, L.P. | Tyler, TX 75710 | Oil & Gas Operator | Sep 2000 |
| 33053 | Zachary Oil Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2023 |
| 33054 | Zachris, Inc. | Mansfield, TX 76063 | Oil Operator | Oct 2021 |
| 33055 | Zachry Exploration, Inc. | San Antonio, TX 78205 | Oil & Gas Operator | Feb 2025 |
| 33056 | Zachry Exploration, LLC | San Antonio, TX 78224 | Oil & Gas Operator | Feb 2025 |
| 33057 | Zachry Exploration, LTD. | San Antonio, TX 78205 | Oil & Gas Operator | Jan 2009 |
| 33058 | Zachry Oil And Gas Properties | Midland, TX 79708 | Oil & Gas Operator | Feb 2025 |
| 33059 | Zachry Operating | Midland, TX 79708 | Oil & Gas Operator | Jan 2011 |
| 33060 | Zachry, H. B. Company | San Antonio, TX 78205 | Oil & Gas Operator | Apr 1994 |
| 33061 | Zackson Resources, Inc. | Houston, TX 77063 | Oil & Gas Operator | Feb 2025 |
| 33062 | Zad, Inc. | | Oil Operator | Jun 2001 |
| 33063 | Zadeck Energy Group | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2011 |
| 33064 | Zadeck Energy Group Inc | | Oil & Gas Operator | Dec 2011 |
| 33065 | Zaf Oil | San Antonio, TX 78230 | Oil & Gas Operator | Aug 2002 |
| 33066 | Zafar Oil & Gas, Inc. | Oklahoma City, OK 73132 | Oil Operator | Aug 2013 |
| 33067 | Zagava, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2025 |
| 33068 | Zajac Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Feb 2025 |
| 33069 | Zam'S Production Company | | Oil Operator | Sep 2004 |
| 33070 | Zama Petro Inc | Clinton, WA 98236-0100 | Oil & Gas Operator | Dec 2023 |
| 33071 | Zap Oil Company | Nowata, OK 74048-2640 | Oil & Gas Operator | Nov 2005 |
| 33072 | Zapata-Fender, L. L. C. | Tyler, TX 75710 | Oil & Gas Operator | Apr 2001 |
| 33073 | Zargon Oil (ND) Inc. | | Oil & Gas Operator | Dec 2024 |
| 33074 | Zarvona Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2025 |
| 33075 | Zavala Independent Gas, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2007 |
| 33076 | Zavanna Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Nov 2024 |
| 33077 | Zavanna, LLC | | Oil & Gas Operator | Dec 2024 |
| 33078 | Zaveri Oil & Gas LTD | Albany, KY 42602 | Oil Operator | Dec 2006 |
| 33079 | Zaza Energy, LLC | Houston, TX 77010 | Oil & Gas Operator | Feb 2025 |
| 33080 | Zca Gas Gathering Co., Inc. | Bartlesville, OK 74003 | Oil & Gas Operator | Apr 2020 |
| 33081 | Zeagler Enterprises, Inc. | | Oil & Gas Operator | Jun 2008 |
| 33082 | Zeal Production Company | Sperry, OK 74073-4714 | Oil & Gas Operator | Dec 2024 |
| 33083 | Zebra Oil And Gas | Lubbock, TX 79423 | Oil & Gas Operator | Aug 2002 |
| 33084 | Zebra Oil Company | El Campo, TX 77437 | Oil & Gas Operator | Feb 2025 |
| 33085 | Zeiders Bros Oil & Gas Co LLC | Edmond, OK 73003 | Oil & Gas Operator | Nov 2024 |
| 33086 | Zeit Exploration Co., Inc. | | Oil & Gas Operator | May 1994 |
| 33087 | Zelaya Oil And Gas, LLC | Premont, TX 78375 | Oil & Gas Operator | Feb 2025 |
| 33088 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2024 |
| 33089 | Zenergy Operating Co. | | Oil & Gas Operator | Sep 2023 |
| 33090 | Zenergy Operating Company, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2016 |
| 33091 | Zenith Drilling | | Oil & Gas Operator | Aug 1995 |
| 33092 | Zenith Drilling Corporation | Wichita, KS 67206 | Oil & Gas Operator | Oct 2024 |
| 33093 | Zenith Exploration Co Inc | Washington, PA 15301 | Oil & Gas Operator | Dec 2014 |
| 33094 | Zenith Oil & Gas Inc | MT Gilead, OH 43338 | Oil & Gas Operator | Dec 1999 |
| 33095 | Zenith Oil & Gas, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2024 |
| 33096 | Zenithal LLC | Isonville, KY 41149 | Oil & Gas Operator | Dec 2022 |
| 33097 | Zephyr Lone Star Oper Co.,L.L.C. | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2025 |
| 33098 | Zephyr Operating Co LLC | Oklahoma City, OK 73118-6035 | Oil & Gas Operator | Nov 2024 |
| 33099 | Zephyr SWD LLC | Oklahoma City, OK 73118-6035 | Oil Operator | Nov 2024 |
| 33100 | Zerbst James E | | Oil & Gas Operator | Apr 2007 |