Tous les combattants
 | Jumabieke Tuerxun | 0-3-0 UFC | #3732 |  |
 | Jun Yong Park | 9-4-0 UFC | #587 |  |
 | Jun Young Hong | 0-2-0 REC | #3270 | |
 | Jung Hyun Lee | 1-2-0 REC | #1417 | |
 | Junie Browning | 1-1-0 UFC | #4323 |  |
 | Junior Albini | 1-4-0 UFC | #3487 |  |
 | Junior Assis | 0-1-0 REC | #7286 | |
 | Junior Assuncao | 2-3-0 UFC | #3814 | |
 | Junior Dos santos | 15-8-0 UFC | #154 | |
 | Junior Duarte | 0-1-0 REC | #7528 | |
 | Junior Hernandez | 2-0-1 REC | #2116 |  |
 | Junior Melo | 0-1-0 REC | #6103 | |
 | Junior Orgulho | 0-1-0 REC | #7251 | |
 | Junior Tafa | 3-6-0 UFC | #369 |  |
 | Juntarou Ushiku | 0-1-0 REC | #7426 |  |
 | Junya Hibino | 0-1-0 REC | #7383 | |
 | Jurabek Malaev | #7646 |  | |
 | Juri Ohara | #7704 | | |
 | Juscelino Pantoja | 0-1-0 REC | #6217 | |
 | Jussier da Silva | 9-7-0 UFC | #1007 | |
 | Justice Torres | 0-1-0 REC | #5085 | |
 | Justin Barry | 0-1-0 REC | #6375 | |
 | Justin Buchholz | 1-4-0 UFC | #3925 | |
 | Justin Burlinson | 3-1-0 REC | #2547 |  |
 | Justin Clarke | 3-1-0 REC | #740 |  |