Poids Légers Hommes
 | Joao Zeferino | 0-2-0 UFC | #2503 |  |
 | Joaquim Silva | 7-5-0 UFC | #738 | |
 | Joe Brammer | 0-2-0 UFC | #4891 |  |
 | Joe Duffy | 4-4-0 UFC | #2136 |  |
 | Joe Ellenberger | 1-1-0 UFC | #5743 | |
 | Joe Giannetti | 0-1-0 UFC | #2518 | |
 | Joe Lauzon | 15-12-0 UFC | #305 | |
 | Joe Proctor | 4-4-0 UFC | #2350 | |
 | Joe Solecki | 5-4-0 UFC | #1526 | |
 | Joe Stevenson | 8-8-0 UFC | #1133 | |
 | Joe Veres | 0-2-0 UFC | #4051 | |
 | Joey Gilbert | 0-1-0 UFC | #6110 | |
 | John Alessio | 0-5-0 UFC | #2865 |  |
 | John Cholish | 1-2-0 UFC | #4171 | |
 | John Gunther | 1-1-0 UFC | #4075 | |
 | John Halverson | 0-2-0 UFC | #4454 | |
 | John Kolosci | 0-1-0 UFC | #6485 | |
 | John Lewis | 1-1-0 UFC | #4704 | |
 | John Makdessi | 11-9-0 UFC | #681 | |
 | John Polakowski | 0-1-0 UFC | #5695 | |