Tous les combattants
 | Johnny Soto | 0-1-0 REC | #7293 |  |
 | Johnny Walker | 8-7-0, 1NC UFC | #251 |  |
 | Johny Hendricks | 13-8-0 UFC | #282 | |
 | Joice Mara | #7173 | | |
 | Joilton Lutterbach | 0-3-0 REC | #3782 | |
 | Joji Goto | 3-1-0 REC | #1015 |  |
 | Jon Cunningham | 0-1-0 REC | #7025 | |
 | Jon delos Reyes | 1-3-0 UFC | #3695 |  |
 | Jon Fitch | 14-3-1 UFC | #228 | |
 | Jon Gover | 0-1-0 REC | #7431 | |
 | Jon Hess | 1-0-0 UFC | #5146 | |
 | Jon Jones | 22-1-0, 1NC UFC | #6 | |
 | Jon Koppenhaver | 1-1-0 UFC | #3245 | |
 | Jon Kunneman | #7332 | | |
 | Jon Madsen | 4-1-0 UFC | #2721 | |
 | Jon Manley | 0-1-0 UFC | #6711 | |
 | Jon Saragih | 0-1-0 REC | #6864 |  |
 | Jon Tabarez | 0-1-0 REC | #5979 | |
 | Jon Tuck | 4-5-0 UFC | #2428 | |
 | Jonas Bilharinho | 1-1-0 REC | #5114 | |
 | Jonas Flok | 0-1-0 REC | #7199 | |
 | Jonas Magard | 7-2-0 REC | #923 |  |
 | Jonatan Garcia | 0-1-0 REC | #4600 |  |
 | Jonatan Kujawa | 0-2-0 REC | #4434 |  |
 | Jonatan Westin | 0-2-0 REC | #6388 |  |