Poids Coqs Hommes
 | John Lineker | 12-4-0 UFC | #523 |  |
 | John Yannis | 1-2-0 UFC | #1112 |  |
 | Johnny Bedford | 2-3-0, 1NC UFC | #3389 | |
 | Johnny Eduardo | 3-5-0 UFC | #2992 | |
 | Johnny Munoz Jr | 2-4-0 UFC | #3294 | |
 | Jonathan Brookins | 2-3-0 UFC | #3031 | |
 | Jonathan Martinez | 10-5-0 UFC | #728 | |
 | Jose Alberto Quinonez | 5-4-0 UFC | #2330 |  |
 | Jose Aldo | 14-9-0 UFC | #69 | |
 | Jose Johnson | 1-3-0 UFC | #2749 | |
 | Jose Torres | 1-1-0 UFC | #2771 | |
 | Joseph Sandoval | 0-2-0 UFC | #5935 | |
 | Josias Musasa | 0-2-0 UFC | #2595 |  |
 | Journey Newson | 1-4-0, 1NC UFC | #3358 | |
 | JP Buys | 0-4-0 UFC | #3265 |  |
 | Juan Diaz | 1-0-0 UFC | #854 |  |
 | Jumabieke Tuerxun | 0-3-0 UFC | #3793 |  |
 | Kai Asakura | 1-2-0 UFC | #407 |  |
 | Ken Stone | 2-2-0 UFC | #3692 | |
 | Kevin Natividad | 0-3-0 UFC | #3664 | |