Tous les combattants
 | Josiane Oliveira | 0-1-0 REC | #6880 |  |
 | Josias Musasa | 0-2-0 UFC | #2618 |  |
 | Josiel Silva | 3-0-0, 1NC REC | #1506 | |
 | Jostin Quilca | 0-1-0 REC | #5323 |  |
 | Jota Ninomiya | 0-1-0 REC | #7265 |  |
 | Journey Newson | 1-4-0, 1NC UFC | #3246 | |
 | Jovan Leka | 1-0-0 REC | #2268 |  |
 | Jovan Zeljkovic | 0-1-0 REC | #5718 | |
 | Jovana Dukic | 0-1-0 REC | #6640 | |
 | Jovidon Khojaev | 0-1-0 REC | #6166 |  |
 | Joy Pendell | 2-1-0 REC | #2500 | |
 | Jozef Jaloviar | 0-1-0 REC | #7365 |  |
 | Jozef Wittner | 1-3-0 REC | #3964 | |
 | Jozette Cotton | 0-1-0 REC | #6656 | |
 | JP Buys | 0-4-0 UFC | #3130 |  |
 | JR Coughran | 0-1-0 REC | #6978 | |
 | Juan Adams | 1-3-0 UFC | #3450 | |
 | Juan Archuleta | 2-2-0 REC | #4346 | |
 | Juan Cabrera | #7655 |  | |
 | Juan Diaz | 1-0-0 UFC | #311 |  |
 | Juan Espino | 2-1-0 UFC | #3260 |  |
 | Juan Manuel Puig | 0-2-0 UFC | #4546 |  |
 | Juan Manuel Suarez | 0-2-0 REC | #4950 | |
 | Juan Pablo Vieira | 3-0-0 REC | #2179 | |
 | Juan Puerta | 1-0-0 REC | #6795 | |