Poids Coqs Hommes
 | Josias Musasa | 0-2-0 UFC | #2520 |  |
 | Josiel Silva | 3-0-0, 1NC REC | #1696 |  |
 | Journey Newson | 1-4-0, 1NC UFC | #3285 |  |
 | JP Buys | 0-4-0 UFC | #3212 |  |
 | Juan Archuleta | 2-2-0 REC | #4500 | |
 | Juan Diaz | 1-0-0 UFC | #512 |  |
 | Julian Orozco | #7883 | | |
 | Julien Pierre Lopez | 2-3-0 REC | #2625 |  |
 | Julio Larrave | 1-0-0 REC | #3508 | |
 | Jumabieke Tuerxun | 0-3-0 UFC | #3732 |  |
 | Juntarou Ushiku | 0-1-0 REC | #7426 |  |
 | Junya Hibino | 0-1-0 REC | #7383 | |
 | Justin Wetzell | 3-2-0 REC | #2222 | |
 | Jyrgalbek Almazbek Uulu | 0-1-0 REC | #5330 |  |
 | Kabylbek Bakyt uulu | 0-1-0 REC | #6460 | |
 | Kacper Matyszewski | 0-1-0 REC | #6584 |  |
 | Kadeem Perkins | 3-0-0 REC | #671 |  |
 | Kadyn Marcantel | 0-1-0 REC | #7320 | |
 | Kai Asakura | 1-2-0 UFC | #260 | |
 | Kaique Modesto | 0-1-0 REC | #7570 | |