Tous les combattants
 | Josiane Oliveira | 0-1-0 REC | #7356 |  |
 | Josias Musasa | 0-2-0 UFC | #2626 |  |
 | Josiel Silva | 4-0-0, 1NC REC | #697 | |
 | Jostin Quilca | 0-1-0 REC | #5726 |  |
 | Josua Hernandez | 0-1-0 REC | #6955 |  |
 | Jota Ninomiya | 0-1-0 REC | #7525 |  |
 | Journey Newson | 1-4-0, 1NC UFC | #3376 | |
 | Jovan Leka | 1-0-0 UFC | #459 |  |
 | Jovan Zeljkovic | 0-1-0 REC | #5928 | |
 | Jovana Dukic | 0-1-0 REC | #6702 | |
 | Jovidon Khojaev | 0-1-0 REC | #6372 |  |
 | Joy Pendell | 2-1-0 REC | #2869 | |
 | Jozef Jaloviar | 0-1-0 REC | #7523 |  |
 | Jozef Wittner | 1-3-0 REC | #3567 | |
 | Jozette Cotton | 0-1-0 REC | #6277 | |
 | JP Buys | 0-4-0 UFC | #3288 |  |
 | JR Coughran | 0-1-0 REC | #7213 | |
 | Juan Adams | 1-3-0 UFC | #3650 | |
 | Juan Archuleta | 2-2-0 REC | #4661 | |
 | Juan Cabrera | #7847 |  | |
 | Juan Diaz | 1-0-0 UFC | #907 |  |
 | Juan Espino | 2-1-0 UFC | #3366 |  |
 | Juan Manuel Puig | 0-2-0 UFC | #4631 |  |
 | Juan Manuel Suarez | 0-2-0 REC | #5426 | |
 | Juan Pablo Vieira | 4-0-0 REC | #526 | |