Poids Légers Hommes
 | Joshua Adeboye | #7748 |  | |
 | Jovidon Khojaev | 0-1-0 REC | #6354 |  |
 | Juan Pablo Vieira | 4-0-0 REC | #360 |  |
 | Juan Sarrios | 0-1-0 REC | #7695 |  |
 | Juan Velasquez Jr. | #7024 |  | |
 | Julian Schlouch | 0-1-0 REC | #7894 |  |
 | Juliano Prescendo | 2-1-0 REC | #1413 | |
| Julio Cesar Chaves | #8144 | | |
 | Junior Melo | 0-1-0 REC | #6273 | |
 | Juri Ohara | #7797 |  | |
 | Justin Buchholz | 1-4-0 UFC | #3997 | |
 | Justin Gaethje | 11-5-0 UFC | #7 | |
 | Justin Gomez | 1-1-0 REC | #7677 | |
 | Justin James | 0-1-0 UFC | #7068 | |
 | Justin Jaynes | 1-4-0 UFC | #3054 | |
 | Justin Montalvo | 0-2-0 REC | #6081 | |
 | Justin Salas | 3-4-0 UFC | #3142 | |
 | Kacper Formela | 2-2-0 REC | #1971 |  |
 | Kacper Fornalski | 1-2-0 REC | #3698 | |
 | Kajan Johnson | 4-3-0 UFC | #2081 |  |