Tous les combattants
 | Jacob Silva | 0-2-0 REC | #5686 |  |
 | Jacob Thrall | 0-1-0 REC | #7469 | |
 | Jacob Volkmann | 6-4-0 UFC | #2047 | |
 | Jacob Wiggins | 0-1-0 REC | #4592 | |
 | Jacobe Smith | 3-0-0 UFC | #296 | |
 | Jacobi Jones | 2-3-0 REC | #2190 | |
 | Jacqueline Cavalcanti | 5-0-0 UFC | #317 |  |
 | Jade Jorand | 0-1-0 REC | #3517 |  |
 | Jade Masson-Wong | #7610 |  | |
 | Jady Menezes | 2-0-0 REC | #2535 |  |
 | Jae Hyun Park | 1-2-0 REC | #2045 |  |
 | Jaeleen Robledo | 1-0-0 REC | #2615 | |
 | Jafel Filho | 3-2-0 UFC | #995 | |
 | Jai Herbert | 3-5-1 UFC | #1182 |  |
 | Jailton Almeida | 8-3-0 UFC | #256 | |
 | Jaime Alvarez | 1-0-0 REC | #6041 | |
 | Jaime Lloyd | 1-0-0 REC | #1606 | |
 | Jaime Mora-Munoz | 0-1-0 REC | #7146 | |
 | Jaimee Nievera | 0-1-0 REC | #5074 | |
 | Jair de Oliveira | 0-1-0 REC | #4530 | |
 | Jair Farias | 0-1-0 REC | #6483 | |
 | Jairo Pacheco | 0-2-0 REC | #5662 | |
 | Jairzinho Rozenstruik | 9-6-0 UFC | #571 |  |
 | Jake Babian | #7609 | | |
 | Jake Bower | 0-1-0 REC | #6010 | |