Tous les combattants
 | Jacob Rosales | 1-3-0 REC | #2224 |  |
 | Jacob Silva | 0-2-0 REC | #5915 | |
 | Jacob Thrall | 0-1-0 REC | #5759 | |
 | Jacob Volkmann | 6-4-0 UFC | #2151 | |
 | Jacob Wiggins | 0-1-0 REC | #4937 | |
 | Jacobe Smith | 3-0-0 UFC | #522 | |
 | Jacobi Jones | 2-3-0 REC | #2456 | |
 | Jacqueline Cavalcanti | 5-0-0 UFC | #434 |  |
 | Jade Jorand | 1-1-0 REC | #657 |  |
 | Jade Masson-Wong | #7529 |  | |
 | Jady Menezes | 2-0-0 REC | #2740 |  |
 | Jae Hyun Park | 1-2-0 REC | #2313 |  |
 | Jaeleen Robledo | 1-0-0 REC | #2840 | |
 | Jafel Filho | 3-3-0 UFC | #1027 | |
 | Jai Herbert | 4-5-1 UFC | #268 |  |
 | Jailton Almeida | 8-3-0 UFC | #316 | |
 | Jaime Alvarez | 1-0-0 REC | #6281 | |
 | Jaime Lloyd | 1-0-0 REC | #1940 | |
 | Jaime Mora-Munoz | 0-1-0 REC | #7402 | |
 | Jaimee Nievera | 0-1-0 REC | #5301 | |
 | Jair de Oliveira | 0-1-0 REC | #4835 | |
 | Jair Farias | 0-1-0 REC | #6588 | |
 | Jairo Pacheco | 0-2-0 REC | #5808 | |
 | Jairzinho Rozenstruik | 9-6-0 UFC | #574 |  |
 | Jake Babian | #7611 | |