Poids Plumes Hommes
 | Blake Bilder | 1-2-0 UFC | #2084 |  |
 | Bobby Moffett | 0-2-0, 1NC UFC | #3279 | |
 | Bogdan Grad | 1-2-0 UFC | #1595 |  |
 | Boston Debord | 0-1-0 REC | #7402 |  |
 | Boualem Drissi | 0-1-0 REC | #4317 |  |
| Bouali Skikem | 0-1-0 REC | #7412 | |
 | Brady Huang | 0-1-0 REC | #5767 | |
 | Brahyan Zurcher | 5-1-0 REC | #2126 |  |
 | Brandon Altomore | 0-1-0 REC | #5787 | |
 | Brandon Carrillo | 0-3-0 REC | #4238 | |
 | Brandy Hester | 0-1-0 REC | #6451 | |
 | Braydon Akeo | 0-1-0 REC | #6504 | |
 | Brendan Loughnane | 0-1-0 UFC | #426 |  |
 | Brian Geraghty | 0-1-0 UFC | #5768 | |
 | Brian Mitchell | 1-0-0 REC | #6867 | |
 | Brian Ortega | 8-5-0, 1NC UFC | #189 | |
 | Briven Sullivan | 1-0-0 REC | #739 | |
| Bruce Bouisson | 1-0-0 REC | #7356 | |
 | Bruno Fontes | 0-1-0 REC | #6396 |  |
 | Bruno Henrique | 1-0-0 REC | #2728 | |