| 201 | G L M Company | | Oil Operator | Jun 2025 |
| 202 | Galloway Drillin | | Oil Operator | Dec 1996 |
| 203 | Gear Petroleum Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2009 |
| 204 | Geoson Oil Compa | | Oil Operator | Jun 1984 |
| 205 | Gerald Michaelis Oil | | Oil Operator | Jun 2025 |
| 206 | Gilbert-Stewart Operating LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 207 | Giles, Benjamin M. | Towanda, KS 67144 | Oil & Gas Operator | Oct 2016 |
| 208 | Gilmore, Jeff | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2009 |
| 209 | Ginther Oil, Inc. | Russell, KS 67665 | Oil Operator | Nov 2019 |
| 210 | Globe Exploratio | | Oil & Gas Operator | Jun 1995 |
| 211 | Globe Operating, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 212 | Goodin Raymond M | | Oil Operator | Mar 1988 |
| 213 | Goodin, Raymond M. - Trust | Augusta, KS 67010 | Oil & Gas Operator | Jun 2000 |
| 214 | Gore Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 215 | Grady Bolding Corporation | Ellinwood, KS 67526 | Oil & Gas Operator | Jun 2025 |
| 216 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |
| 217 | Graham-Michaelis Corporation | Wichita, KS 67201 | Oil & Gas Operator | Dec 2010 |
| 218 | Great Bend Oil P | | Oil Operator | Jun 1991 |
| 219 | Great Plains Petroleum, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Jun 2025 |
| 220 | Guthrie Oil Co | | Oil Operator | Nov 1994 |
| 221 | Guthrie Oil Comp | | Oil & Gas Operator | Dec 1994 |
| 222 | H & B Petroleum Corp. | Hutchinson, KS 67504 | Oil & Gas Operator | Jun 2025 |
| 223 | H & C Oil Operat | | Oil & Gas Operator | Dec 1996 |
| 224 | H & C Oil Operating Inc. | Plainville, KS 67663 | Oil & Gas Operator | Jun 2025 |
| 225 | H & D Exploration LLC | Hoisington, KS 67544 | Oil & Gas Operator | Jun 2025 |
| 226 | H & M Packers Serv. L.L.C. | | Oil Operator | Dec 2019 |
| 227 | H-30 Incorporate | | Oil & Gas Operator | Nov 1990 |
| 228 | Halliburton Oil | | Oil & Gas Operator | Sep 2008 |
| 229 | Hallwood Petrole | | Oil & Gas Operator | Apr 1999 |
| 230 | Hallwood Petroleum | Denver, CO 80237 | Oil & Gas Operator | Dec 1997 |
| 231 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 232 | Hamby Oil LLC | Ellinwood, KS 67526 | Oil Operator | May 2013 |
| 233 | Har-Ken Agent, Ok | Owensboro, KY 42302 | Oil Operator | Jun 2025 |
| 234 | Harms Petroleum | | Oil & Gas Operator | May 1991 |
| 235 | Harms, H. Allan Petroleum Co., Inc. | Great Bend, KS 67530 | Oil Operator | Apr 1999 |
| 236 | Hartman Oil Co., Inc. | Wichita, KS 67206 | Oil & Gas Operator | Jun 2025 |
| 237 | Hartman W L Trus | | Oil Operator | Jun 1992 |
| 238 | Hazen, Paul D. | Great Bend, KS 67530 | Oil Operator | Nov 1990 |
| 239 | Hazen, Ty Anthony | Lyons, KS 67554 | Oil Operator | Jun 2025 |
| 240 | Hembree Oil Production, LLC | Great Bend, KS 67530 | Oil Operator | Jun 2025 |
| 241 | Herman L. Loeb, LLC | Lawrenceville, IL 62439 | Oil & Gas Operator | Jun 2025 |
| 242 | Hess Oil Company | McPherson, KS 67460 | Oil & Gas Operator | Jun 2025 |
| 243 | HG Oil Holdings, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Jun 2025 |
| 244 | Hi-Kat Petroleum | | Oil Operator | Mar 1990 |
| 245 | Hillary Oil Comp | | Oil & Gas Operator | Apr 1991 |
| 246 | Hillenburg Oil C | | Oil Operator | Apr 1994 |
| 247 | Hinkle Oil Compa | | Oil & Gas Operator | Nov 1994 |
| 248 | HJ, Inc. | Garden City, KS 67846 | Oil & Gas Operator | Jun 2025 |
| 249 | Hoffman Oil, Inc. | Claflin, KS 67525 | Oil Operator | Jun 2025 |
| 250 | Hoffman Resources LLC | Hoisington, KS 67544 | Oil & Gas Operator | Jun 2025 |
| 251 | Hoffman, Brian | Claflin, KS 67525 | Oil Operator | May 2025 |
| 252 | Holt IVan | | Oil Operator | Mar 1989 |
| 253 | Holt IVan Leroy | | Oil & Gas Operator | Jan 1994 |
| 254 | Hummon Corp. | Medicine Lodge, KS 67104 | Oil & Gas Operator | Apr 2023 |
| 255 | Hupfer Oil & Gas | Hays, KS 67601 | Oil & Gas Operator | Dec 1993 |
| 256 | Hupfer Operating, Inc. | Shawnee, KS 66203 | Oil & Gas Operator | Dec 2019 |
| 257 | Hutchinson Oil C | | Oil & Gas Operator | May 1995 |
| 258 | Hutchinson Oil Co. | | Oil & Gas Operator | Jun 2025 |
| 259 | I & F Oil And Farm | | Oil & Gas Operator | Dec 2009 |
| 260 | I & M Oil Production, LLC | Overland Park, KS 66209 | Oil & Gas Operator | Jun 2025 |
| 261 | Iuka-Carmi Development LLC | Pratt, KS 67124 | Oil & Gas Operator | Jun 2025 |
| 262 | J & D Investment Co. | | Oil & Gas Operator | Feb 2025 |
| 263 | J & M Oil Compan | | Oil Operator | Oct 1993 |
| 264 | J D Dreiling Oil, Inc. | Claflin, KS 67525 | Oil Operator | Jun 2025 |
| 265 | J. C. Oil Company | Odessa, TX 79766 | Oil & Gas Operator | Mar 2015 |
| 266 | J.R. Oil Productions | | Oil Operator | Jul 2019 |
| 267 | James W. Collins Oil Operations | | Oil Operator | Dec 2009 |
| 268 | Jandie Oil Compa | | Oil Operator | Jul 1990 |
| 269 | Jason Oil Company, LLC | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 270 | Jayson David Company | Seward, KS 67576 | Oil Operator | Apr 2009 |
| 271 | JD Production Co | Waco, TX 76702 | Oil & Gas Operator | Dec 2009 |
| 272 | Jo-Allyn Oil Co Inc | Laverne, OK 73848 | Oil & Gas Operator | Jul 2025 |
| 273 | Joel Associates Inc. | Wichita, KS 67203 | Gas Operator | Mar 2013 |
| 274 | John O. Farmer, Inc. | | Oil & Gas Operator | Dec 1996 |
| 275 | John Roy Evans Oil Company LLC | Claflin, KS 67525 | Oil Operator | Jun 2025 |
| 276 | Jolen Operating Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2025 |
| 277 | K & D Oil Compan | | Oil Operator | Apr 1994 |
| 278 | K & E Drilling I | | Oil & Gas Operator | Sep 1995 |
| 279 | K & E Petroleum | | Oil & Gas Operator | Jan 1995 |
| 280 | K & K Oil | Chase, KS 67524 | Oil & Gas Operator | Oct 2019 |
| 281 | K & N Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Jun 2025 |
| 282 | K R M Petroleum | | Oil & Gas Operator | Jan 1990 |
| 283 | K-Bar Oil LLC | McPherson, KS 67460 | Oil Operator | Jun 2025 |
| 284 | K.C. Operations | | Oil Operator | Jun 2025 |
| 285 | K.J.S. Oil | | Oil & Gas Operator | Jun 2025 |
| 286 | Kahan & Assoc In | | Oil Operator | Dec 1996 |
| 287 | Kahan And Associates, Inc | Tulsa, OK 74170 | Oil & Gas Operator | Jul 2025 |
| 288 | Kaiser-Francis O | | Oil & Gas Operator | Oct 1995 |
| 289 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Oct 2025 |
| 290 | Kal Oil Operations | | Oil Operator | Jun 2025 |
| 291 | Kansas Crude Investments LLC | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 292 | Kelso Casing Pul | | Oil Operator | Mar 1995 |
| 293 | Kennedy & Mitche | | Oil & Gas Operator | May 1990 |
| 294 | Kera-Oil | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 295 | KG Oil Co | | Oil Operator | Jun 2025 |
| 296 | Kimbark Oil & Ga | | Oil & Gas Operator | Aug 1992 |
| 297 | Kirkpatrick Properties LLC | Ellinwood, KS 67526 | Oil Operator | Jun 2025 |
| 298 | Kiwanda Resc Inc | | Oil & Gas Operator | Aug 1993 |
| 299 | Kizzar Well Servicing, Inc. | Chase, KS 67524 | Oil Operator | Jun 2025 |
| 300 | Klima Oil, Inc. | Great Bend, KS 67530 | Oil Operator | Dec 2009 |