Poids Plumes Hommes
 | JR Coughran | 0-1-0 REC | #6506 |  |
 | Juan Manuel Puig | 0-2-0 UFC | #4333 |  |
 | Julian Erosa | 9-8-0 UFC | #500 | |
 | Julian Ruiz | 0-1-0 REC | #6262 | |
 | Julio Arce | 6-4-0 UFC | #1393 | |
 | Julio Cesar Neves | 0-2-0 REC | #4434 |  |
 | Julius Vega | 1-0-0 REC | #6291 | |
 | Jun Young Hong | 0-2-0 REC | #4034 |  |
 | Junior Assuncao | 2-3-0 UFC | #3499 | |
 | Junior Duarte | 0-1-0 REC | #7073 | |
 | Jurabek Malaev | #7212 |  | |
 | Justice Torres | 0-1-0 REC | #4676 | |
 | Justin Gonzales | 3-4-0 REC | #3097 | |
 | Justin Lawrence | 1-2-0 UFC | #4122 | |
 | Justin Thompson | 0-1-0 REC | #6994 | |
 | Kaan Ofli | 2-2-0 UFC | #476 |  |
 | Kafiz Sakibekov | 0-3-0 REC | #3054 |  |
 | Kai Kamaka III | 1-2-1 UFC | #1897 | |
 | Kai Lu | 1-2-0 REC | #4295 |  |
 | Kaiwen Li | 3-2-0 REC | #1459 | |