Poids Légers Hommes
 | Jeff Cox | 0-2-0 UFC | #6079 |  |
 | Jefferson Almeida | 0-1-0 REC | #4318 |  |
 | Jeremiah Huff | 0-1-0 REC | #6490 | |
 | Jeremy Fattorusso | 0-1-0 REC | #7187 | |
 | Jeremy Stephens | 15-20-0, 1NC UFC | #211 | |
 | Jermaine Edwards | 2-0-0 REC | #2854 | |
 | Jesse Hannam | 0-1-0 REC | #6408 | |
 | Jesse Roberts | 0-1-0 REC | #7363 | |
 | Jhon Bryan | 0-1-0 REC | #5522 | |
 | Jhon Grueso | 0-1-0 REC | #6556 |  |
 | Jim Miller | 28-18-0, 1NC UFC | #26 | |
 | Jimmy Vienot | 1-1-0 REC | #1596 |  |
 | Jimmy Washington | 0-1-0 REC | #5707 | |
 | JJ Okanovich | 1-0-0 REC | #6767 | |
 | Joao Marcos Pierini | 0-1-0 UFC | #5098 | |
 | Joao Moraes | 2-0-0 REC | #4896 | |
 | Joao Zeferino | 0-2-0 UFC | #2679 | |
 | Joaquim Silva | 7-5-0 UFC | #906 | |
 | Joe Brammer | 0-2-0 UFC | #5094 | |
 | Joe Duffy | 4-4-0 UFC | #2255 |  |