Tous les combattants
 | Jun Yong Park | 9-4-0 UFC | #610 |  |
 | Jun Young Hong | 0-2-0 REC | #3271 | |
 | Jung Hyun Lee | 1-2-0 REC | #1375 | |
 | Junie Browning | 1-1-0 UFC | #4323 |  |
 | Junior Albini | 1-4-0 UFC | #3486 |  |
 | Junior Assis | 0-1-0 REC | #7257 | |
 | Junior Assuncao | 2-3-0 UFC | #3805 | |
 | Junior Dos santos | 15-8-0 UFC | #154 | |
 | Junior Duarte | 0-1-0 REC | #7505 | |
 | Junior Hernandez | 2-0-1 REC | #2087 |  |
 | Junior Melo | 0-1-0 REC | #6185 | |
 | Junior Orgulho | 0-1-0 REC | #7203 | |
 | Junior Tafa | 3-6-0 UFC | #354 |  |
 | Juntarou Ushiku | 0-1-0 REC | #7399 |  |
 | Junya Hibino | 0-1-0 REC | #7348 | |
 | Jurabek Malaev | #7651 |  | |
 | Juri Ohara | #7685 | | |
 | Juscelino Pantoja | 0-1-0 REC | #6148 | |
 | Jussier da Silva | 9-7-0 UFC | #1026 | |
 | Justice Torres | 0-1-0 REC | #5096 | |
 | Justin Barry | 0-1-0 REC | #6422 | |
 | Justin Buchholz | 1-4-0 UFC | #3917 | |
 | Justin Burlinson | 3-1-0 REC | #2527 |  |
 | Justin Clarke | 3-1-0 REC | #708 |  |
 | Justin Detzel | 1-0-0 REC | #973 |  |