Poids Mouches Hommes
 | Jacob Silva | 0-2-0 REC | #6057 |  |
 | Jae Hoon Lee | #7944 |  | |
 | Jafel Filho | 3-3-0 UFC | #1184 |  |
 | Jaime Alvarez | 1-0-0 REC | #6273 | |
 | Jaime Lloyd | 1-0-0 REC | #2171 | |
 | Jamal Fayzullaev | 0-1-0 REC | #6508 |  |
 | Jamie Abbott-Bissett | 2-0-0 REC | #3067 |  |
 | Jamshid Tilyaev | #7770 |  | |
 | Jared Braun | 0-1-0 REC | #6665 | |
 | Jarred Brooks | 2-2-0 UFC | #3266 | |
 | Javier Cepeda | 0-1-0 REC | #6904 | |
 | Jawany Scott | 6-2-0 REC | #1128 |  |
 | Jean Matos | 0-1-0 REC | #7226 | |
 | Jean Sevalho | 2-0-0 REC | #956 | |
 | Jeff Molina | 3-0-0 UFC | #2291 | |
 | Jenel Lausa | 1-3-0 UFC | #3603 |  |
 | Jenilto Matos | 0-2-0 REC | #4342 | |
 | Jeremia Siregar | 0-1-0 REC | #6338 |  |
 | Jerome Rivera | 0-4-0 UFC | #3408 | |
 | Jesse Martinelli | 0-1-0 REC | #6902 | |