Poids Mouches Hommes
 | Jimmy Flick | 2-4-0 UFC | #2343 |  |
 | Joby Sanchez | 1-4-0 UFC | #3144 | |
 | John Moraga | 8-6-0 UFC | #1315 | |
 | Jon delos Reyes | 1-3-0 UFC | #3803 |  |
 | Jordan Espinosa | 2-4-0 UFC | #2665 | |
 | Jose Maria Tome | 0-2-0 UFC | #5410 |  |
 | Jose Ochoa | 2-2-0 UFC | #567 |  |
 | Joseph Benavidez | 15-6-0 UFC | #217 | |
 | Joseph Morales | 3-2-0 UFC | #1175 | |
 | Josh Ferguson | 0-2-0 UFC | #5095 | |
 | Josh Sampo | 1-3-0 UFC | #4182 | |
 | Joshua Van | 10-1-0 UFC | #16 |  |
 | Juancamilo Ronderos | 0-2-0 UFC | #4791 |  |
 | Jussier da Silva | 9-7-0 UFC | #1012 | |
 | Justin Scoggins | 4-5-0 UFC | #2634 | |
 | Kai Kara-France | 8-5-0 UFC | #506 |  |
 | Kevin Borjas | 1-4-0 UFC | #1507 | |
 | Kiru Sahota | 0-1-0 UFC | #2905 |  |
 | Kyoji Horiguchi | 9-1-0 UFC | #81 |  |
 | Lone'er Kavanagh | 3-1-0 UFC | #135 | |