Sorted alphabetically by last name · 2780 fighters
| Name | Nickname | |
|---|---|---|
| BS | Benardo Sopaj | "Lion King" |
| BD | Beneil Dariush | |
| BL | Benito Lopez | "Golden Boy" |
| BR | Benji Radach | "Razor" |
| BS | Benoit Saint Denis | "God of War" |
| BH | Benson Henderson | "Smooth" |
| BS | Bentley Syler | "Bolivia" |
| BM |
| Bernardo Magalhaes |
| "Trekko" |
| BY | Besam Yousef |
| BC | Bethe Correia | "Pitbull" |