Poids Plumes Hommes
 | Juan Manuel Puig | 0-2-0 UFC | #4589 |  |
 | Julian Erosa | 9-9-0 UFC | #548 |  |
 | Julian Ruiz | 0-1-0 REC | #6654 | |
 | Julio Arce | 6-4-0 UFC | #1397 | |
 | Julio Cesar Neves | 0-2-0 REC | #5162 |  |
 | Julio Pereira | 2-0-0 REC | #1474 | |
 | Julius Vega | 1-0-0 REC | #6646 | |
 | Jun Young Hong | 0-2-0 REC | #3270 |  |
 | Junior Assuncao | 2-3-0 UFC | #3814 | |
 | Junior Duarte | 0-1-0 REC | #7528 | |
 | Jurabek Malaev | #7646 |  | |
 | Justice Torres | 0-1-0 REC | #5085 | |
 | Justin Gonzales | 3-4-0 REC | #3479 | |
 | Justin Lawrence | 1-2-0 UFC | #4391 | |
 | Justin Thompson | 0-1-0 REC | #7600 | |
 | Kaan Ofli | 3-2-0 UFC | #241 |  |
 | Kacper Wrobel | 0-1-0 REC | #6045 |  |
 | Kafiz Sakibekov | 1-3-0 REC | #1008 |  |
 | Kai Kamaka III | 2-3-1 UFC | #709 | |
 | Kai Lu | 1-2-0 REC | #4317 |  |