Poids Légers Hommes
 | Jack Sheehan | #7931 |  | |
 | Jacob Bohn | 0-1-0 REC | #6920 | |
| Jacob Hill | 0-1-0 REC | #6867 | |
 | Jacob Lagoa | 1-0-0 REC | #1649 | |
 | Jacob Rosales | 1-3-0 REC | #2513 | |
 | Jacobi Jones | 2-3-0 REC | #2626 | |
 | Jae Hyun Park | 1-2-0 REC | #2564 |  |
 | Jai Herbert | 4-5-1 UFC | #471 |  |
 | Jairo Pacheco | 0-2-0 REC | #6078 |  |
 | Jake Bower | 0-1-0 REC | #6575 | |
 | Jake Hixenbaugh | 0-2-0 REC | #4450 | |
 | Jake Lindsey | 0-3-0 UFC | #4708 | |
 | Jakub Bahnik | 5-1-0, 1NC REC | #2945 |  |
 | Jakub Dohnal | 4-5-0 REC | #2349 | |
 | Jakub Kaczmarski | 0-2-0 REC | #6796 |  |
 | Jakub Kaszuba | 8-0-0 REC | #604 | |
 | Jakub Zacpal | #8064 | | |
 | Jalin Turner | 8-6-0 UFC | #470 | |
 | James Deitz | 0-1-0 REC | #7370 | |
 | James Gonzalez | 2-3-0 REC | #4050 | |