Poids Coqs Hommes
 | John Lineker | 12-4-0 UFC | #491 |  |
 | John Yannis | 1-2-0 UFC | #1008 |  |
 | Johnny Bedford | 2-3-0, 1NC UFC | #3339 | |
 | Johnny Eduardo | 3-5-0 UFC | #2991 | |
 | Johnny Munoz Jr | 2-4-0 UFC | #3272 | |
 | Jonathan Brookins | 2-3-0 UFC | #3044 | |
 | Jonathan Martinez | 10-5-0 UFC | #701 | |
 | Jose Alberto Quinonez | 5-4-0 UFC | #2343 |  |
 | Jose Aldo | 14-9-0 UFC | #74 | |
 | Jose Johnson | 1-3-0 UFC | #2753 | |
 | Jose Torres | 1-1-0 UFC | #2741 | |
 | Joseph Sandoval | 0-2-0 UFC | #5852 | |
 | Josias Musasa | 0-2-0 UFC | #2543 |  |
 | Journey Newson | 1-4-0, 1NC UFC | #3321 | |
 | JP Buys | 0-4-0 UFC | #3252 |  |
 | Juan Diaz | 1-0-0 UFC | #711 |  |
 | Jumabieke Tuerxun | 0-3-0 UFC | #3755 |  |
 | Kai Asakura | 1-2-0 UFC | #340 |  |
 | Ken Stone | 2-2-0 UFC | #3657 | |
 | Kevin Natividad | 0-3-0 UFC | #3627 | |