Sorted alphabetically by last name · 2780 fighters
| Name | Nickname | |
|---|---|---|
| YA | Yaroslav Amosov | |
| YU | Yasuhiro Urushitani | |
| YJ | Yazmin Jauregui | |
| YL | YiSak Lee | "The Tank" |
| Y | Yizha | |
| YR | Yoel Romero | "Soldier of God" |
| YL | Yohan Lainesse | "White Lion" |
| YI | Yoislandy Izquierdo |
| "Cuba" |
| YA | Yoji Anjo | "Mr. 200%" |
| YD | Yorgan De Castro | "The Mad Titan" |