| 501 | Bollinger Oil Company | Tulsa, OK 74105 | Oil Operator | Aug 2018 |
| 502 | Bollinger, Jerald | Chanute, KS 66720 | Oil Operator | Dec 2024 |
| 503 | Bomber Oil Inc. | Parker, KS 66072 | Oil Operator | Oct 2022 |
| 504 | Bonanza Carbon Capture, LLC | | Oil & Gas Operator | Feb 2026 |
| 505 | Bonanza Energy C | | Oil & Gas Operator | Sep 1995 |
| 506 | Bonanza Energy Corp | Benedict, KS 66714 | Oil & Gas Operator | Jul 2003 |
| 507 | Bonanza Oil Comp | | Oil Operator | Sep 1990 |
| 508 | Bone, Sally L. | Woodland Park, CO 80866 | Gas Operator | Feb 2026 |
| 509 | Bonwell, W. A. | Wichita, KS 67202 | Oil Operator | Mar 1996 |
| 510 | Booth Industries Oil And Gas, LLC | Big Cove Tannery, PA 17212 | Oil Operator | Jul 2020 |
| 511 | Booth Oil Compan | | Oil Operator | Aug 1992 |
| 512 | Boots Oil, Inc. | Welda, KS 66091 | Oil Operator | Aug 2000 |
| 513 | Boots, H. E. | Independence, KS 67301 | Oil Operator | Apr 1993 |
| 514 | Border-Line Inco | | Oil Operator | Nov 1989 |
| 515 | Borell Oil Compa | | Oil Operator | Nov 1986 |
| 516 | Borell, Albert W. | Wilson, KS 67490 | Oil Operator | Jul 2005 |
| 517 | Borell, Elvern D. | Dighton, KS 67839 | Oil Operator | Dec 2009 |
| 518 | Boswell Energy Corporation | Oklahoma City, OK 73114-7401 | Oil & Gas Operator | Nov 2004 |
| 519 | Bowen Oil & Expl | | Oil & Gas Operator | Apr 1993 |
| 520 | Bowen, Charles D. | Sedan, KS 67361 | Oil & Gas Operator | Jul 1998 |
| 521 | Bowers Drilling | | Oil & Gas Operator | Jul 1995 |
| 522 | Bowers Drilling Co., Inc. | Wichita, KS 67211 | Oil & Gas Operator | Sep 2003 |
| 523 | Bowie Oil LLC | | Oil Operator | Feb 2026 |
| 524 | Bowles, Jack | Edmond, OK 73083 | Oil Operator | Apr 2020 |
| 525 | Bowman Oil Compa | | Oil Operator | Feb 1994 |
| 526 | Bowman Oil Company, A General Partnership | Codell, KS 67663 | Oil Operator | Feb 2026 |
| 527 | Boxberger Carl O | | Oil Operator | May 1994 |
| 528 | Boxberger, Carl Oil, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2009 |
| 529 | Boyd, Daniel P. | Overland Park, KS 66214 | Oil Operator | Mar 1989 |
| 530 | Boyer Jay C | | Oil Operator | Feb 1994 |
| 531 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Mar 2026 |
| 532 | BP Exploration I | | Oil & Gas Operator | Oct 1994 |
| 533 | BPG Capital, LLC | Frisco, TX 75034 | Oil Operator | Jul 2018 |
| 534 | Brackeen Line Cleaning, Inc. | Claflin, KS 67525 | Oil Operator | Jan 2026 |
| 535 | Braden Oil Compa | | Gas Operator | Jul 1992 |
| 536 | Braden Petroleum | | Oil Operator | Oct 1988 |
| 537 | Braden Petroleum & Well Plugging Company | | Oil Operator | Dec 2009 |
| 538 | Braden Petroleum Company | Augusta, KS 67010 | Oil Operator | Apr 2008 |
| 539 | Braden-Deem Inc | Wichita, KS 67226 | Oil & Gas Operator | Jan 2026 |
| 540 | Braden-Deem Inco | | Oil & Gas Operator | Nov 1994 |
| 541 | Bradford Pipe | | Oil Operator | Dec 1983 |
| 542 | Bradley & Bradley Oil, A General Partnership | Dexter, KS 67038 | Oil Operator | Sep 2009 |
| 543 | Bradley Oil Company | Edmond, OK 73013 | Oil Operator | Sep 2024 |
| 544 | Brake Inc. | | Oil & Gas Operator | Sep 2017 |
| 545 | Bramble Oil Company | Wichita, KS 67206 | Oil & Gas Operator | Mar 2007 |
| 546 | Bramwell Petrole | | Oil & Gas Operator | Dec 1995 |
| 547 | Bramwell Petroleum, Inc. | Zenda, KS 67159 | Oil & Gas Operator | Feb 2026 |
| 548 | Brandt Prod Comp | | Oil & Gas Operator | Sep 1994 |
| 549 | Brandt Production Company, Inc. | Wichita, KS 67230 | Oil Operator | Jan 2003 |
| 550 | Brange | | Oil & Gas Operator | Oct 2009 |
| 551 | Brant Energy LLC | Rantoul, KS 66079 | Oil Operator | Apr 2022 |
| 552 | Brass Oil | | Oil Operator | Dec 2025 |
| 553 | Bratco Operating Company Inc | Dewey, OK 74029 | Oil & Gas Operator | Mar 2026 |
| 554 | Braun, John | Victoria, KS 67671 | Oil Operator | Oct 2019 |
| 555 | Brazos Petroleum | | Oil & Gas Operator | Aug 1995 |
| 556 | Brecheisen Oil C | | Oil & Gas Operator | Sep 1993 |
| 557 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Mar 2026 |
| 558 | Brehm Asset Management, LLC | Frisco, TX 75035 | Oil Operator | Feb 2026 |
| 559 | Breitenbach Family Farms LLC | Bonner Springs, KS 66012 | Oil & Gas Operator | May 2020 |
| 560 | Brennco Gas Transmission, Inc. | Overland Park, KS 66282 | Gas Operator | Apr 2009 |
| 561 | Brewer, Freddie P. | Paola, KS 66071 | Oil Operator | Nov 2003 |
| 562 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 563 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2026 |
| 564 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 565 | Brickley Enterprises, LLC | Eldorado, KS 67042 | Oil Operator | Feb 2026 |
| 566 | Bridwell Oil Company, A General Partnership | Wichita Falls, TX 76307 | Oil Operator | Dec 2019 |
| 567 | Bridwell, Kayla & Gary | Independence, KS 67301 | Oil & Gas Operator | Dec 2009 |
| 568 | Brigco LLC | Lakin, KS 67860 | Gas Operator | Dec 2023 |
| 569 | Bright, Wayne E. | Independence, KS 67301 | Oil & Gas Operator | Feb 2026 |
| 570 | Brigman Prod Inc | Hutchinson, KS 67502 | Oil & Gas Operator | Sep 2009 |
| 571 | Brinker Enterprises, LLC | Glen Elder, KS 67446 | Oil Operator | Feb 2026 |
| 572 | Briscoe Petroleum, LLC | Sheridan, WY 82801 | Oil & Gas Operator | Mar 2026 |
| 573 | Bristol Resource | | Oil & Gas Operator | Jan 1995 |
| 574 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 575 | Brite Liquids, LLC | Cheyenne Wells, CO 80810 | Oil & Gas Operator | Dec 2011 |
| 576 | Brito Oil Co., Inc | Wichita, KS 67201 | Oil & Gas Operator | Dec 2009 |
| 577 | Brixey Enterprises | Stilwell, KS 66085 | Oil Operator | Sep 1996 |
| 578 | Brock Oil & Gas | | Oil & Gas Operator | Dec 1996 |
| 579 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 580 | Brooks Ron Corpo | | Oil & Gas Operator | Sep 1995 |
| 581 | Brooks, Wanita M. | Moore, OK 73153 | Oil Operator | Jul 2003 |
| 582 | Brougher Oil, Inc. | Wichita, KS 67212 | Oil & Gas Operator | Apr 2002 |
| 583 | Broughton Oil | | Oil Operator | Nov 1985 |
| 584 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Jun 2026 |
| 585 | Brown Gene Compa | | Oil Operator | Sep 1995 |
| 586 | Brown Kenny Ente | | Oil Operator | Jul 1995 |
| 587 | Brown Operating | | Oil & Gas Operator | Dec 1991 |
| 588 | Brown Tom Constr | | Oil Operator | Dec 1995 |
| 589 | Brown VIola E. | Plainville, KS 67663 | Oil Operator | May 2014 |
| 590 | Brown, Gene Company | Plainville, KS 67663 | Oil Operator | May 1996 |
| 591 | Brown, Nicholas L. | Iola, KS 66749 | Oil Operator | Apr 2010 |
| 592 | Brown, Thomas M. (Deceased) | Plainville, KS 67663 | Oil Operator | May 2006 |
| 593 | Brown, William F. | Cheney, KS 67025 | Oil & Gas Operator | Feb 2026 |
| 594 | Broyles, Gerald Earl | Eureka, KS 67045 | Oil Operator | Apr 1996 |
| 595 | Bruce Lonny | | Oil Operator | Sep 1992 |
| 596 | Bruce Oil Compan | | Oil & Gas Operator | Dec 1996 |
| 597 | Bruce Oil Company, LLC | McPherson, KS 67460 | Oil Operator | Feb 2026 |
| 598 | Bruce Oil Operat | | Oil Operator | Dec 1987 |
| 599 | Brull, Allen | Victoria, KS 67671 | Oil Operator | Jan 2026 |
| 600 | Brundred Petrole | | Oil Operator | Apr 1986 |