Poids Légers Hommes
 | Jack Becker | 0-1-0 REC | #4517 |  |
 | Jacob Bohn | 0-1-0 REC | #6591 |  |
 | Jacob Hill | 0-1-0 REC | #6220 | |
 | Jacob Rosales | 1-3-0 REC | #1951 | |
 | Jacobi Jones | 2-3-0 REC | #2190 | |
 | Jae Hyun Park | 1-2-0 REC | #2045 |  |
 | Jai Herbert | 3-5-1 UFC | #1182 |  |
 | Jairo Pacheco | 0-2-0 REC | #5662 |  |
 | Jake Bower | 0-1-0 REC | #6010 | |
 | Jake Hixenbaugh | 0-1-0 REC | #6679 | |
 | Jake Lindsey | 0-3-0 UFC | #4375 | |
 | Jakub Bahnik | 5-1-0, 1NC REC | #2678 |  |
 | Jakub Dohnal | 4-5-0 REC | #2044 | |
 | Jakub Kaczmarski | 0-2-0 REC | #6167 |  |
 | Jakub Kaszuba | 7-0-0 REC | #991 | |
 | Jalin Turner | 8-6-0 UFC | #306 | |
 | James Deitz | 0-1-0 REC | #7056 | |
 | James Gonzalez | 2-3-0 REC | #3601 | |
 | James Llontop | 0-3-0 UFC | #2296 |  |
 | James Lynch | 1-1-0 REC | #6313 | |