Poids Mouches Hommes
 | Jimmy Flick | 2-4-0 UFC | #2356 |  |
 | Joby Sanchez | 1-4-0 UFC | #3167 | |
 | John Moraga | 8-6-0 UFC | #1272 | |
 | Jon delos Reyes | 1-3-0 UFC | #3787 |  |
 | Jordan Espinosa | 2-4-0 UFC | #2686 | |
 | Jose Maria Tome | 0-2-0 UFC | #5411 |  |
 | Jose Ochoa | 2-2-0 UFC | #691 |  |
 | Joseph Benavidez | 15-6-0 UFC | #219 | |
 | Joseph Morales | 3-2-0 UFC | #1302 | |
 | Josh Ferguson | 0-2-0 UFC | #5130 | |
 | Josh Sampo | 1-3-0 UFC | #4184 | |
 | Joshua Van | 10-1-0 UFC | #19 |  |
 | Juancamilo Ronderos | 0-2-0 UFC | #4858 |  |
 | Jussier da Silva | 9-7-0 UFC | #1007 | |
 | Justin Scoggins | 4-5-0 UFC | #2656 | |
 | Kai Kara-France | 8-5-0 UFC | #513 |  |
 | Kevin Borjas | 2-4-0 UFC | #505 | |
 | Kiru Sahota | 0-1-0 UFC | #2959 |  |
 | Kyoji Horiguchi | 9-2-0 UFC | #77 |  |
 | Lone'er Kavanagh | 3-2-0 UFC | #127 | |