| 101 | Global Exploration, LTD. | Wellington, KS 67152 | Oil Operator | Jun 2019 |
| 102 | Global Natural R | | Oil & Gas Operator | Oct 1990 |
| 103 | Globe Exploratio | | Oil & Gas Operator | Jun 1995 |
| 104 | Globe Operating, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 105 | Glori Holdings, Inc. | Houston, TX 77042 | Oil Operator | Mar 2004 |
| 106 | GMX Resources, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2014 |
| 107 | Goben'S United Petroleum, Inc. | Wichita, KS 67218 | Oil Operator | Nov 2001 |
| 108 | Goby Energy, Inc. | Glenwood Springs, CO 81601 | Oil Operator | Dec 2019 |
| 109 | Goode Emmit | | Oil Operator | Nov 1992 |
| 110 | Goodin Raymond M | | Oil Operator | Mar 1988 |
| 111 | Goodin, Raymond M. - Trust | Augusta, KS 67010 | Oil & Gas Operator | Jun 2000 |
| 112 | Gore Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 113 | Gothic Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2015 |
| 114 | Gould Oil Inc. | Wichita, KS 67278 | Oil & Gas Operator | Oct 2019 |
| 115 | Gould Oil Incorp | | Oil & Gas Operator | May 1996 |
| 116 | Gowdy Chemical Co. | | Oil Operator | Oct 2001 |
| 117 | GPM Gas Corporation | Oklahoma City, OK 73102-5627 | Oil & Gas Operator | Nov 1998 |
| 118 | GPS Oil Lease Operations | Inman, KS 67546 | Oil Operator | Jun 2001 |
| 119 | Gra Ex, LLC | Kingman, KS 67068 | Oil & Gas Operator | Oct 2023 |
| 120 | Graber Oil | Hutchinson, KS 67502 | Oil & Gas Operator | Oct 2018 |
| 121 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 122 | Grady Bolding Corporation | Ellinwood, KS 67526 | Oil & Gas Operator | Sep 2025 |
| 123 | Graham Royalty L | | Gas Operator | Mar 1991 |
| 124 | Graham, Lowell H. | Le Roy, KS 66857 | Oil Operator | Sep 2025 |
| 125 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |
| 126 | Graham-Michaelis Corporation | Wichita, KS 67201 | Oil & Gas Operator | Dec 2010 |
| 127 | Grand Mesa Operating Company | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 128 | Grant Oil Incorp | | Oil & Gas Operator | Nov 1986 |
| 129 | Grant Stan & Kru | | Oil Operator | Apr 1985 |
| 130 | Grassland Petrol | | Oil Operator | Feb 1993 |
| 131 | Graves Drilling | | Oil & Gas Operator | Sep 1995 |
| 132 | Graves Drilling Co., Inc. | Wichita, KS 67208 | Oil & Gas Operator | Sep 2025 |
| 133 | Gray S Oil Prod | | Gas Operator | Aug 1982 |
| 134 | Graybol-Patton C | | Oil & Gas Operator | Oct 1991 |
| 135 | GRB Resources | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2004 |
| 136 | Great Bend Oil P | | Oil Operator | Jun 1991 |
| 137 | Great Eastern En | | Oil & Gas Operator | Nov 1995 |
| 138 | Great Eastern Energy & Dev. Corp. | Midland, TX 79701 | Oil & Gas Operator | Jul 2008 |
| 139 | Great Plains Energy, Inc. | Lincoln, NE 68516 | Oil & Gas Operator | Sep 2025 |
| 140 | Great Plains Pet | | Oil & Gas Operator | Mar 1995 |
| 141 | Great Plains Petroleum, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Sep 2025 |
| 142 | Green Enterprises | | Oil Operator | Sep 2025 |
| 143 | Green J R & Jerr | | Oil Operator | Dec 1991 |
| 144 | Green Oilfield Production L.L.C. | Jennings, KS 67643 | Oil Operator | Aug 2025 |
| 145 | Green Oper Compa | | Gas Operator | Jan 1970 |
| 146 | Green Operating Company Inc | Tulsa, OK 74135 | Oil & Gas Operator | Sep 2025 |
| 147 | Green, Bobbie | Chautauqua, KS 67334 | Oil Operator | Sep 2025 |
| 148 | Green, J. R. | Hays, KS 67601 | Oil Operator | Mar 2005 |
| 149 | Green, Robert W | Ottawa, KS 66067 | Oil & Gas Operator | Dec 2017 |
| 150 | Greene Enterprises, Inc. | Gillette, WY 82717 | Oil Operator | Dec 2009 |
| 151 | Greenhead Energy Operating LLC | Oklahoma City, OK 73131 | Oil & Gas Operator | Dec 2025 |
| 152 | Greensburg Oilfield LLC | Zenda, KS 67159 | Oil Operator | Nov 2013 |
| 153 | Greenwood Resources L.L.C. | Pratt, KS 67124 | Oil Operator | Sep 2025 |
| 154 | Greer Oil Compan | | Oil & Gas Operator | Jun 1988 |
| 155 | Greer Tom & Welm | | Oil Operator | Mar 1995 |
| 156 | Greer, Joseph V. | Yates Center, KS 66783 | Oil & Gas Operator | Oct 2005 |
| 157 | Greer, Tom | Ponca City, OK 74602 | Oil Operator | Aug 2016 |
| 158 | Gressel Production, LLC | South Haven, KS 67140 | Oil & Gas Operator | Sep 2025 |
| 159 | Gressel, Dewey H. | | Oil Operator | Dec 2009 |
| 160 | Grey Oil Co | Pratt, KS 67124 | Oil & Gas Operator | Sep 2007 |
| 161 | Grey, Glenn E. | Haviland, KS 67059 | Oil Operator | Mar 2002 |
| 162 | Grey, Huey P. | Greensburg, KS 67054 | Oil Operator | Dec 1984 |
| 163 | Grey, James H. | Greensburg, KS 67054 | Gas Operator | Nov 1988 |
| 164 | Greystone, Inc. | Hays, KS 67601 | Oil Operator | Jun 2019 |
| 165 | Griffin, Charles | Stafford, KS 67578 | Oil Operator | Sep 1997 |
| 166 | Griffin, Charles N. | Pratt, KS 67124 | Oil & Gas Operator | Sep 2025 |
| 167 | Griggs Oil Incor | | Oil & Gas Operator | May 1994 |
| 168 | Groshong Oil, LLC | Wellsville, KS 66092 | Oil Operator | Sep 2025 |
| 169 | Gross William R | | Oil Operator | Feb 1986 |
| 170 | Groves, Frank | Arkansas City, KS 67005 | Oil & Gas Operator | Mar 1995 |
| 171 | Gruenerwald WM & | | Oil & Gas Operator | Apr 1994 |
| 172 | Grunder Oil, LLC | St John, KS 67576 | Oil Operator | Sep 2025 |
| 173 | Gruss Petroleum | | Oil Operator | Jan 1986 |
| 174 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 175 | GS Oil & Gas Co. | New York, NY 10004 | Gas Operator | Jan 1989 |
| 176 | Guardian Energy Cons | | Gas Operator | Sep 2009 |
| 177 | Guardian Energy Consultants, Inc. | Tulsa, OK 74120 | Gas Operator | Sep 2009 |
| 178 | Guinn Investments, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2018 |
| 179 | Guinotte Company LLC | Ottawa, KS 66067 | Oil Operator | Dec 2009 |
| 180 | Gulf Exploration, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Jan 2026 |
| 181 | Gulick Drilling , Inc. | Eureka, KS 67045 | Oil Operator | Sep 2025 |
| 182 | Gumfory, Shawn | Iola, KS 66749 | Oil Operator | Jul 1998 |
| 183 | Gunner Oil Company | Wichita, KS 67205 | Oil & Gas Operator | Sep 2025 |
| 184 | Gus Jones Cable Tool Service, LLC | Elk City, KS 67344 | Oil Operator | Aug 2025 |
| 185 | Gusher Oil | | Oil Operator | Jul 2004 |
| 186 | Gustison Steven | | Oil Operator | Feb 1985 |
| 187 | Guthrie Oil Co | | Oil Operator | Nov 1994 |
| 188 | Guthrie Oil Comp | | Oil & Gas Operator | Dec 1994 |