Tous les combattants
 | Joshua Weems | 0-1-0 UFC | #3768 |  |
 | Josiah Harrell | 0-1-0 UFC | #1696 | |
 | Josiah Reyes | 1-1-0 REC | #5434 | |
 | Josiane Nunes | 3-3-0 UFC | #2485 |  |
 | Josiane Oliveira | 0-1-0 REC | #7270 | |
 | Josias Musasa | 0-2-0 UFC | #2570 |  |
 | Josiel Silva | 4-0-0, 1NC REC | #595 | |
 | Jostin Quilca | 0-1-0 REC | #5655 |  |
 | Josua Hernandez | 0-1-0 REC | #6909 |  |
 | Jota Ninomiya | 0-1-0 REC | #7490 | |
 | Journey Newson | 1-4-0, 1NC UFC | #3336 | |
 | Jovan Leka | 1-0-0 UFC | #364 |  |
 | Jovan Zeljkovic | 0-1-0 REC | #5871 | |
 | Jovana Dukic | 0-1-0 REC | #6655 | |
 | Jovidon Khojaev | 0-1-0 REC | #6359 |  |
 | Joy Pendell | 2-1-0 REC | #2802 | |
 | Jozef Jaloviar | 0-1-0 REC | #7584 |  |
 | Jozef Wittner | 1-3-0 REC | #3516 | |
 | Jozette Cotton | 0-1-0 REC | #6343 | |
 | JP Buys | 0-4-0 UFC | #3248 |  |
 | JR Coughran | 0-1-0 REC | #7137 | |
 | Juan Adams | 1-3-0 UFC | #3613 | |
 | Juan Archuleta | 2-2-0 REC | #4618 | |
 | Juan Cabrera | #7821 |  | |
 | Juan Diaz | 1-0-0 UFC | #791 |  |