Poids Mi-Moyens Hommes
 | Jorge Santiago | 1-5-0 UFC | #3329 |  |
 | Jose Barrios Vargas | 0-1-0 REC | #5368 |  |
 | Jose Henrique | 0-1-0 REC | #4919 | |
 | Jose Marcos | 0-1-0 REC | #5740 | |
 | Josef Hala | 1-0-0 REC | #7611 |  |
 | Joseilton Santos | 1-1-0 REC | #2211 | |
 | Josenaldo Silva | 0-1-0 REC | #7358 | |
 | Joseph Luciano | 1-2-0 REC | #3630 |  |
 | Josh Burkman | 6-12-0, 1NC UFC | #1776 |  |
 | Josh Koscheck | 15-10-0 UFC | #300 | |
 | Josh Neer | 6-9-0 UFC | #1793 | |
 | Josh Quinlan | 1-3-0 UFC | #3292 | |
 | Josh Rafferty | 0-1-0 UFC | #5808 | |
 | Josh Stuart | 0-1-0 UFC | #5767 | |
 | Joshua Nakagawa | 0-1-0 REC | #7349 | |
 | Joshua Onwordi | 1-2-0 REC | #3653 |  |
 | Josiah Harrell | 0-1-0 UFC | #1075 | |
 | Jozef Wittner | 1-2-0 REC | #3835 |  |
 | Juan Manuel Suarez | 0-2-0 REC | #4811 |  |
 | Julien Gazagnaire | 1-1-0 REC | #1812 |  |