Poids Légers Hommes
 | Jacob Rosales | 1-3-0 REC | #2782 |  |
 | Jacobi Jones | 2-3-0 REC | #2781 | |
 | Jae Hyun Park | 1-2-0 REC | #2824 |  |
 | Jai Herbert | 4-5-1 UFC | #681 |  |
 | Jairo Pacheco | 0-2-0 REC | #6189 |  |
 | Jake Bower | 0-1-0 REC | #7007 | |
 | Jake Hixenbaugh | 0-2-0 REC | #4725 | |
 | Jake Lindsey | 0-3-0 UFC | #4879 | |
 | Jakub Bahnik | 5-1-0, 1NC REC | #3031 |  |
 | Jakub Dohnal | 4-5-0 REC | #2443 | |
 | Jakub Kaczmarski | 0-2-0 REC | #6927 |  |
 | Jakub Kaszuba | 8-0-0 REC | #780 | |
 | Jakub Zacpal | 0-1-0 REC | #7141 | |
 | Jalin Turner | 9-6-0 UFC | #141 | |
 | James Deitz | 0-1-0 REC | #7320 | |
 | James Gonzalez | 2-3-0 REC | #4202 | |
 | James Lynch | 1-1-0 REC | #6810 | |
 | James Moontasri | 2-4-0 UFC | #3492 | |
 | James Pleasant | 0-1-0 REC | #7576 | |
 | James Power | 5-1-0 REC | #2094 | |