Poids Mouches Hommes
 | Jimmy Flick | 2-4-0 UFC | #2329 |  |
 | Joby Sanchez | 1-4-0 UFC | #3122 | |
 | John Moraga | 8-6-0 UFC | #1308 | |
 | Jon delos Reyes | 1-3-0 UFC | #3783 |  |
 | Jordan Espinosa | 2-4-0 UFC | #2661 | |
 | Jose Maria Tome | 0-2-0 UFC | #5388 |  |
 | Jose Ochoa | 2-2-0 UFC | #549 |  |
 | Joseph Benavidez | 15-6-0 UFC | #223 | |
 | Joseph Morales | 3-2-0 UFC | #1146 | |
 | Josh Ferguson | 0-2-0 UFC | #5065 | |
 | Josh Sampo | 1-3-0 UFC | #4165 | |
 | Joshua Van | 10-1-0 UFC | #11 |  |
 | Juancamilo Ronderos | 0-2-0 UFC | #4783 |  |
 | Jussier da Silva | 9-7-0 UFC | #1014 | |
 | Justin Scoggins | 4-5-0 UFC | #2628 | |
 | Kai Kara-France | 8-5-0 UFC | #502 |  |
 | Kevin Borjas | 1-4-0 UFC | #1495 | |
 | Kiru Sahota | 0-1-0 UFC | #2883 |  |
 | Kyoji Horiguchi | 9-1-0 UFC | #81 |  |
 | Lone'er Kavanagh | 3-1-0 UFC | #134 | |