Poids Légers Hommes
 | B.J. Bland | 0-1-0 REC | #6666 |  |
 | Bakhachali Bakhachaliev | 1-0-0 REC | #6310 |  |
 | Bakhtiyar Abdulaev | 0-1-0 REC | #5967 |  |
 | Bakhtyaar Oryakhail | 1-0-0 REC | #6427 |  |
 | Balajin | 0-1-0 REC | #7309 |  |
 | Bartlomiej Kopera | 0-2-0 REC | #5029 |  |
 | Bartlomiej Skowyra | 0-1-0 REC | #5524 | |
 | Basel Shalaan | 1-0-0 REC | #1862 |  |
 | Basir Saraliev | 1-0-0 REC | #3413 | |
 | Baysangur Makaev | 0-1-0 REC | #5512 |  |
 | Bayzet Khatkhokhu | 0-2-0 REC | #5078 | |
 | Bekbolot Abdylda Uulu | 0-1-0 REC | #7258 |  |
 | Ben Wall | 0-2-0 UFC | #4567 |  |
 | Beneil Dariush | 17-8-1 UFC | #101 |  |
 | Benjamin Brander | 0-1-0 REC | #5087 |  |
 | Benny Orozco | 2-1-0 REC | #1046 |  |
 | Benoit Saint-Denis | 9-3-0 UFC | #21 |  |
 | Bernardo Magalhaes | 0-2-0 UFC | #5185 |  |
 | Biaggio Ali Walsh | 9-1-0 REC | #357 | |
 | Bibert Tumenov | 3-0-0 REC | #1158 | |