| 301 | BR Corporation | Independence, KS 67301 | Gas Operator | Feb 2003 |
| 302 | Brackeen Line Cleaning, Inc. | Claflin, KS 67525 | Oil Operator | Jun 2025 |
| 303 | Braden Oil Compa | | Gas Operator | Jul 1992 |
| 304 | Braden Petroleum | | Oil Operator | Oct 1988 |
| 305 | Braden Petroleum & Well Plugging Company | | Oil Operator | Dec 2009 |
| 306 | Braden Petroleum Company | Augusta, KS 67010 | Oil Operator | Apr 2008 |
| 307 | Braden-Deem Inc | Wichita, KS 67226 | Oil & Gas Operator | Aug 2025 |
| 308 | Braden-Deem Inco | | Oil & Gas Operator | Nov 1994 |
| 309 | Bradford Pipe | | Oil Operator | Dec 1983 |
| 310 | Bradley & Bradley Oil, A General Partnership | Dexter, KS 67038 | Oil Operator | Sep 2009 |
| 311 | Bradley Oil Company | Edmond, OK 73013 | Oil Operator | Jun 2025 |
| 312 | Brake Inc. | | Oil & Gas Operator | Sep 2017 |
| 313 | Bramble Oil Company | Wichita, KS 67206 | Oil & Gas Operator | Mar 2007 |
| 314 | Bramwell Petrole | | Oil & Gas Operator | Dec 1995 |
| 315 | Bramwell Petroleum, Inc. | Zenda, KS 67159 | Oil & Gas Operator | Jun 2025 |
| 316 | Brandt Prod Comp | | Oil & Gas Operator | Sep 1994 |
| 317 | Brandt Production Company, Inc. | Wichita, KS 67230 | Oil Operator | Jan 2003 |
| 318 | Brange | | Oil & Gas Operator | Oct 2009 |
| 319 | Brant Energy LLC | Rantoul, KS 66079 | Oil Operator | Apr 2022 |
| 320 | Brass Oil | | Oil Operator | Apr 2025 |
| 321 | Bratco Operating Company Inc | Dewey, OK 74029 | Oil & Gas Operator | Sep 2025 |
| 322 | Braun, John | Victoria, KS 67671 | Oil Operator | Oct 2019 |
| 323 | Brazos Petroleum | | Oil & Gas Operator | Aug 1995 |
| 324 | Brecheisen & Lor | | Oil & Gas Operator | Oct 1995 |
| 325 | Brecheisen & Spooner | Garnett, KS 66032 | Gas Operator | Aug 2009 |
| 326 | Brecheisen Oil C | | Oil & Gas Operator | Sep 1993 |
| 327 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2025 |
| 328 | Brehm Asset Management, LLC | Frisco, TX 75035 | Oil Operator | Mar 2025 |
| 329 | Breitenbach Family Farms LLC | Bonner Springs, KS 66012 | Oil & Gas Operator | May 2020 |
| 330 | Brennco Gas Transmission, Inc. | Overland Park, KS 66282 | Gas Operator | Apr 2009 |
| 331 | Brewer, Freddie P. | Paola, KS 66071 | Oil Operator | Nov 2003 |
| 332 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 333 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2025 |
| 334 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 335 | Brickley Enterprises, LLC | Eldorado, KS 67042 | Oil Operator | Jun 2025 |
| 336 | Bridwell Oil Company, A General Partnership | Wichita Falls, TX 76307 | Oil Operator | Jun 2025 |
| 337 | Bridwell, Kayla & Gary | Independence, KS 67301 | Oil & Gas Operator | Dec 2009 |
| 338 | Brigco LLC | Lakin, KS 67860 | Gas Operator | Dec 2023 |
| 339 | Bright, Wayne E. | Independence, KS 67301 | Oil & Gas Operator | Jun 2025 |
| 340 | Brigman Prod Inc | Hutchinson, KS 67502 | Oil & Gas Operator | Sep 2009 |
| 341 | Brinker Enterprises, LLC | Glen Elder, KS 67446 | Oil Operator | Jun 2025 |
| 342 | Briscoe Petroleum, LLC | Sheridan, WY 82801 | Oil & Gas Operator | Oct 2025 |
| 343 | Bristol Resource | | Oil & Gas Operator | Jan 1995 |
| 344 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 345 | Brite Liquids, LLC | Cheyenne Wells, CO 80810 | Oil & Gas Operator | Dec 2011 |
| 346 | Brito Oil Co., Inc | Wichita, KS 67201 | Oil & Gas Operator | Dec 2009 |
| 347 | Brixey Enterprises | Stilwell, KS 66085 | Oil Operator | Sep 1996 |
| 348 | Brock Oil & Gas | | Oil & Gas Operator | Dec 1996 |
| 349 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 350 | Brooks Ron Corpo | | Oil & Gas Operator | Sep 1995 |
| 351 | Brooks, Ron Corporation | Hutchinson, KS 67502 | Gas Operator | Apr 1999 |
| 352 | Brooks, Wanita M. | Moore, OK 73153 | Oil Operator | Jul 2003 |
| 353 | Brougher Oil, Inc. | Wichita, KS 67212 | Oil & Gas Operator | Apr 2002 |
| 354 | Broughton Oil | | Oil Operator | Nov 1985 |
| 355 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 356 | Brown Gene Compa | | Oil Operator | Sep 1995 |
| 357 | Brown Kenny Ente | | Oil Operator | Jul 1995 |
| 358 | Brown Operating | | Oil & Gas Operator | Dec 1991 |
| 359 | Brown Tom Constr | | Oil Operator | Dec 1995 |
| 360 | Brown VIola E. | Plainville, KS 67663 | Oil Operator | May 2014 |
| 361 | Brown, Gene Company | Plainville, KS 67663 | Oil Operator | May 1996 |
| 362 | Brown, Nicholas L. | Iola, KS 66749 | Oil Operator | Apr 2010 |
| 363 | Brown, Thomas M. (Deceased) | Plainville, KS 67663 | Oil Operator | May 2006 |
| 364 | Brown, William F. | Cheney, KS 67025 | Oil & Gas Operator | Jun 2025 |
| 365 | Broyles, Gerald Earl | Eureka, KS 67045 | Oil Operator | Apr 1996 |
| 366 | Bruce Lonny | | Oil Operator | Sep 1992 |
| 367 | Bruce Oil Compan | | Oil & Gas Operator | Dec 1996 |
| 368 | Bruce Oil Company, LLC | McPherson, KS 67460 | Oil Operator | Jun 2025 |
| 369 | Bruce Oil Operat | | Oil Operator | Dec 1987 |
| 370 | Brull, Allen | Victoria, KS 67671 | Oil Operator | Jun 2025 |
| 371 | Brundred Petrole | | Oil Operator | Apr 1986 |
| 372 | Bruner, Alan | Moline, KS 67353 | Oil Operator | Jun 2003 |
| 373 | Brungardt Oil And Leasing Inc. | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 374 | Bruning, Donald F. | Sterling, KS 67579 | Oil Operator | Apr 2001 |
| 375 | Brunson Producti | | Oil & Gas Operator | Aug 1993 |
| 376 | Brunson Production, Inc. | Wichita, KS 67226 | Oil & Gas Operator | Jun 2025 |
| 377 | Bryan Eugene W S | | Oil & Gas Operator | Nov 1995 |
| 378 | Bryan, Dorothy J. | Canton, KS 67428 | Oil & Gas Operator | Nov 2000 |
| 379 | Bryant Investors, A General Partnership | Lyons, KS 67554 | Oil Operator | Oct 2009 |
| 380 | Bta Operating | Edmond, OK 73083 | Oil & Gas Operator | May 2020 |
| 381 | Buccaneer Petrol | | Oil Operator | Jan 1988 |
| 382 | Buck Paul J | | Oil & Gas Operator | Feb 1995 |
| 383 | Buck, Paul Jordan | Sedan, KS 67361 | Oil & Gas Operator | Jun 2025 |
| 384 | Buckeye Corporat | | Oil Operator | Dec 1996 |
| 385 | Buckeye West LLC | Wooster, OH 44691 | Oil Operator | Jun 2025 |
| 386 | Buddie Sallee | Humboldt, KS 66748 | Oil Operator | Dec 2002 |
| 387 | Buffalo Oil & Gas LLC | Oxford, KS 67119 | Oil & Gas Operator | Jun 2025 |
| 388 | Buffalo Operating Corporation | Westminister, CO 80234 | Oil & Gas Operator | Dec 2001 |
| 389 | Buffalo Resources LLC | Woodward, OK 73801 | Oil & Gas Operator | Aug 2025 |
| 390 | Bullseye Oilfield Service | Cunningham, KS 67035 | Oil Operator | Apr 2023 |
| 391 | Bullseye Petrole | | Oil Operator | Oct 1992 |
| 392 | Bullseye Petroleum, Inc. | Wichita, KS 67230 | Oil Operator | Jun 2025 |
| 393 | Burch Exploratio | | Oil Operator | Mar 1991 |
| 394 | Burdett, Alfred | Sedan, KS 67361 | Oil Operator | Aug 2008 |
| 395 | Buried Hills Prod. Co., Inc. | Midvale, UT 84047 | Oil Operator | Dec 2006 |
| 396 | Burk Lease | Cherryvale, KS 67335 | Oil & Gas Operator | Mar 1994 |
| 397 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 398 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 399 | Burnett Corporat | | Oil & Gas Operator | Oct 1993 |
| 400 | Burns WM J | | Oil Operator | Jun 1994 |