Tous les combattants
 | John Teixeira da Conceicao | 0-1-0 UFC | #3484 |  |
 | John Winter | 0-1-0 REC | #7315 |  |
 | John Yannis | 1-2-0 UFC | #855 |  |
 | John-Olav Einemo | 0-2-0 UFC | #3950 |  |
 | Johnathan Waid | 1-1-0 REC | #1661 | |
 | Johnny Bedford | 2-3-0, 1NC UFC | #3330 | |
 | Johnny Campbell | 0-1-0 REC | #6734 | |
 | Johnny Case | 4-2-0 UFC | #2382 | |
 | Johnny Eblen | 7-1-0 REC | #596 | |
 | Johnny Eduardo | 3-5-0 UFC | #2968 | |
 | Johnny Gill | 1-1-0 REC | #6241 | |
 | Johnny Hopper | 0-1-0 REC | #6582 | |
 | Johnny Munoz Jr | 2-4-0 UFC | #3236 | |
 | Johnny Rees | 0-2-0 UFC | #5674 | |
 | Johnny Rhodes | 2-1-0 UFC | #3967 | |
 | Johnny Robles | 1-0-0 REC | #3582 | |
 | Johnny Soto | 0-1-0 REC | #7663 | |
 | Johnny Walker | 8-7-0, 1NC UFC | #294 | |
 | Johny Hendricks | 13-8-0 UFC | #295 | |
 | Joice Mara | #7303 | | |
 | Joilton Lutterbach | 0-3-0 REC | #3996 | |
 | Joji Goto | 3-1-0 REC | #1439 |  |
 | Jon Cunningham | 0-1-0 REC | #7232 | |
 | Jon delos Reyes | 1-3-0 UFC | #3798 |  |
 | Jon Fitch | 14-3-1 UFC | #233 | |