Poids Mouches Hommes
 | Jeremia Siregar | 0-1-0 REC | #6487 |  |
 | Jerome Rivera | 0-4-0 UFC | #3450 |  |
 | Jesse Martinelli | 0-1-0 REC | #7060 | |
 | Jesus Aguilar | 4-3-0 UFC | #1250 |  |
 | Jhonata Silva | 1-1-0 REC | #6063 |  |
 | Jhonatan Oliveira | 1-2-0 REC | #3240 | |
 | Jimi Natividad | 0-1-0 REC | #6346 |  |
 | Jimmy Flick | 2-4-0 UFC | #2370 | |
 | Jin Tanaka | 1-0-0 REC | #1637 |  |
 | Jiniushiyue | 3-2-0 REC | #1435 |  |
 | Jo Arai | 0-2-0 REC | #4697 | |
 | Joao Elias | 0-1-0 REC | #6431 | |
 | Joao Victor Melo | 0-1-0 REC | #6560 | |
 | Joby Sanchez | 1-4-0 UFC | #3182 | |
 | Joe Fields | 6-0-0 REC | #676 |  |
 | Joe Hiramoto | 2-1-0 REC | #922 | |
 | John Dave Almanza | 0-1-0 REC | #5938 | |
 | John Moraga | 8-6-0 UFC | #1281 | |
 | Jon delos Reyes | 1-3-0 UFC | #3812 |  |
 | Jonny Touma | 0-2-0 REC | #4311 |  |