Poids Mi-Moyens Hommes
 | Jose Henrique | 1-0-0 UFC | #1540 |  |
 | Jose Marcos | 0-1-0 REC | #5788 | |
 | Josef Hala | 1-0-0 REC | #7903 |  |
 | Joseilton Santos | 1-1-0 REC | #2735 | |
 | Josenaldo Silva | 0-1-0 REC | #7402 | |
 | Joseph Luciano | 1-2-0 REC | #3995 |  |
 | Josh Burkman | 6-12-0, 1NC UFC | #1850 |  |
 | Josh Koscheck | 15-10-0 UFC | #309 | |
 | Josh Neer | 6-9-0 UFC | #1906 | |
 | Josh Quinlan | 1-3-0 UFC | #3487 | |
 | Josh Rafferty | 0-1-0 UFC | #5855 | |
 | Josh Stuart | 0-1-0 UFC | #5822 | |
 | Joshua Nakagawa | 0-1-0 REC | #7651 | |
 | Joshua Onwordi | 1-3-0 REC | #3365 |  |
 | Josiah Harrell | 0-1-0 UFC | #1655 | |
 | Jozef Wittner | 1-3-0 REC | #3493 |  |
 | Juan Manuel Suarez | 0-2-0 REC | #5311 |  |
 | Julien Gazagnaire | 1-1-0 REC | #2307 |  |
 | Junie Browning | 1-1-0 UFC | #4356 | |
 | Junior Hernandez | 2-0-1 REC | #2266 |  |