Tous les combattants
 | Brian Stapleton | 0-1-0 REC | #7219 |  |
 | Brian Torres | 1-0-0 REC | #6127 | |
 | Brianna Fortino | 1-1-0 UFC | #4667 | |
 | Brice Belghazi | 0-2-0 REC | #3563 |  |
 | Brice Picaud | 0-1-0 REC | #5520 | |
 | Brigid Chase | 0-1-0 REC | #6246 | |
 | Bristol Marunde | 0-2-0 UFC | #4328 | |
 | British Boloyoang | 0-1-0 REC | #5314 |  |
 | Brittany Camozzi | 0-2-0 REC | #7260 | |
 | Brittney Cloudy | 0-4-0 REC | #4073 | |
 | Brittney Elkin | 0-2-0 REC | #4374 | |
 | Briven Sullivan | 1-0-0 REC | #2040 | |
 | Brock Jardine | 0-2-0 UFC | #6637 | |
 | Brock Larson | 3-3-0 UFC | #3325 | |
 | Brock Lesnar | 4-3-0, 1NC UFC | #476 | |
 | Brodie Farber | 0-2-0 UFC | #5515 | |
 | Brogan Walker | 0-3-0 UFC | #3139 | |
 | Brok Hopwood | 0-1-0 REC | #6234 | |
 | Brok Weaver | 1-2-0 UFC | #4209 | |
 | Bruce Bouisson | 1-0-0 REC | #7930 | |
 | Bruce Souto | 1-2-0 REC | #5304 |  |
 | Bruna Brasil | 3-5-0 UFC | #1368 | |
 | Bruna Ellen | 1-2-0 REC | #5560 | |
 | Brunno Ferreira | 6-4-0 UFC | #537 | |
 | Bruno Assis | 0-2-0 REC | #5980 | |