Tous les combattants
 | Jumabieke Tuerxun | 0-3-0 UFC | #3793 |  |
 | Jun Yong Park | 9-4-0 UFC | #648 |  |
 | Jun Young Hong | 0-2-0 REC | #3328 | |
 | Jung Hyun Lee | 1-2-0 REC | #1762 | |
 | Junie Browning | 1-1-0 UFC | #4385 |  |
 | Junior Albini | 1-4-0 UFC | #3524 |  |
 | Junior Assis | 0-1-0 REC | #7543 | |
 | Junior Assuncao | 2-3-0 UFC | #3906 | |
 | Junior Dos santos | 15-8-0 UFC | #170 | |
 | Junior Duarte | 0-1-0 REC | #7589 | |
 | Junior Hernandez | 2-0-1 REC | #2349 |  |
 | Junior Melo | 0-1-0 REC | #6421 | |
 | Junior Orgulho | 0-1-0 REC | #7575 | |
 | Junior Tafa | 3-6-0 UFC | #571 |  |
 | Juntarou Ushiku | 0-1-0 REC | #7546 |  |
 | Junya Hibino | 0-1-0 REC | #7584 | |
 | Jurabek Malaev | #7768 |  | |
 | Jurgen Koci | #8180 |  | |
 | Juri Ohara | #7841 | | |
 | Juscelino Pantoja | 0-1-0 REC | #5971 | |
 | Jussier da Silva | 9-7-0 UFC | #1043 | |
 | Justice Torres | 0-1-0 REC | #5137 | |
 | Justin Barry | 0-1-0 REC | #6135 | |
 | Justin Buchholz | 1-4-0 UFC | #4044 | |
 | Justin Burlinson | 3-1-0 REC | #2670 |  |