Poids Coqs Hommes
 | Joshua Cervantes | 0-1-0 REC | #5786 |  |
 | Joshua Simpson | 1-0-0 REC | #4076 | |
 | Josias Musasa | 0-2-0 UFC | #2543 |  |
 | Josiel Silva | 4-0-0, 1NC REC | #510 |  |
 | Journey Newson | 1-4-0, 1NC UFC | #3321 | |
 | JP Buys | 0-4-0 UFC | #3252 |  |
 | Juan Archuleta | 2-2-0 REC | #4613 | |
 | Juan Diaz | 1-0-0 UFC | #711 |  |
 | Julian Orozco | #7997 | | |
 | Julien Pierre Lopez | 2-3-0 REC | #2692 |  |
 | Julio Larrave | 1-0-0 REC | #3626 | |
 | Jumabieke Tuerxun | 0-3-0 UFC | #3755 |  |
 | Juntarou Ushiku | 0-1-0 REC | #7527 |  |
 | Junya Hibino | 0-1-0 REC | #7501 | |
 | Justin Wetzell | 3-2-0 REC | #2354 | |
 | Jyrgalbek Almazbek Uulu | 0-1-0 REC | #5398 |  |
 | Kabylbek Bakyt uulu | 0-1-0 REC | #6378 | |
 | Kacper Matyszewski | 0-1-0 REC | #6569 |  |
 | Kadeem Perkins | 3-0-0 REC | #895 |  |
 | Kadyn Marcantel | 0-1-0 REC | #7434 | |