Poids Plumes Hommes
 | Bin Xie | #430 |  | |
 | Blake Alvey | 1-0-0 REC | #6789 |  |
 | Blake Bilder | 1-2-0 UFC | #2338 | |
 | Bobby Moffett | 0-2-0, 1NC UFC | #3501 | |
 | Bogdan Grad | 1-2-0 UFC | #1804 |  |
 | Boston Debord | 0-1-0 REC | #7766 |  |
 | Boualem Drissi | 0-1-0 REC | #4468 |  |
| Bouali Skikem | 0-1-0 REC | #7759 | |
 | Brady Huang | 0-1-0 REC | #6070 | |
 | Brahyan Zurcher | 5-1-0 REC | #2323 |  |
 | Brandon Altomore | 0-1-0 REC | #6156 | |
 | Brandon Carrillo | 0-3-0 REC | #4605 | |
 | Brandy Hester | 0-1-0 REC | #6931 | |
 | Braydon Akeo | 0-1-0 REC | #6887 | |
 | Brendan Loughnane | 0-1-0 UFC | #474 |  |
 | Brian Geraghty | 0-1-0 UFC | #5848 | |
 | Brian Mitchell | 1-0-0 REC | #7291 | |
 | Brian Ortega | 8-5-0, 1NC UFC | #249 | |
 | Briven Sullivan | 1-0-0 REC | #1426 | |
| Bruce Bouisson | 1-0-0 REC | #7710 | |