Poids Mouches Hommes
 | Jawany Scott | 6-2-0 REC | #946 |  |
 | Jean Matos | 0-1-0 REC | #6962 |  |
 | Jean Sevalho | 1-0-0 REC | #2308 | |
 | Jeff Molina | 3-0-0 UFC | #2217 |  |
 | Jenel Lausa | 1-3-0 UFC | #3495 |  |
 | Jenilto Matos | 0-2-0 REC | #4161 | |
 | Jeremia Siregar | 0-1-0 REC | #6140 |  |
 | Jerome Rivera | 0-4-0 UFC | #3301 | |
 | Jesse Martinelli | 0-1-0 REC | #6791 | |
 | Jesus Aguilar | 4-3-0 UFC | #1067 |  |
 | Jhonata Silva | 1-1-0 REC | #5651 | |
 | Jhonatan Oliveira | 1-2-0 REC | #2958 | |
 | Jimi Natividad | 0-1-0 REC | #5798 | |
 | Jimmy Flick | 2-4-0 UFC | #2280 | |
 | Jiniushiyue | 2-2-0 REC | #3585 |  |
 | Jo Arai | 0-2-0 REC | #4285 |  |
 | Joao Elias | 0-1-0 REC | #6287 | |
 | Joao Victor Melo | 0-1-0 REC | #6216 | |
 | Joby Sanchez | 1-4-0 UFC | #3057 | |
 | Joe Fields | 6-0-0 REC | #326 | |