Sorted alphabetically by last name · 2765 fighters
| Name | Nickname | |
|---|---|---|
| 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" |
| BL | Bevon Lewis |
| BK | Bharat Kandare | "Daring" |