Poids Mi-Moyens Hommes
 | Jose Marcos | 0-1-0 REC | #5679 |  |
 | Josef Hala | 1-0-0 REC | #7815 |  |
 | Joseilton Santos | 1-1-0 REC | #2586 | |
 | Josenaldo Silva | 0-1-0 REC | #7440 | |
 | Joseph Luciano | 1-2-0 REC | #3879 |  |
 | Josh Burkman | 6-12-0, 1NC UFC | #1828 |  |
 | Josh Koscheck | 15-10-0 UFC | #304 | |
 | Josh Neer | 6-9-0 UFC | #1877 | |
 | Josh Quinlan | 1-3-0 UFC | #3455 | |
 | Josh Rafferty | 0-1-0 UFC | #5892 | |
 | Josh Stuart | 0-1-0 UFC | #5728 | |
 | Joshua Nakagawa | 0-1-0 REC | #7583 | |
 | Joshua Onwordi | 1-3-0 REC | #3293 |  |
 | Josiah Harrell | 0-1-0 UFC | #1479 | |
 | Jozef Wittner | 1-3-0 REC | #3382 |  |
 | Juan Manuel Suarez | 0-2-0 REC | #5157 |  |
 | Julien Gazagnaire | 1-1-0 REC | #2143 |  |
 | Junie Browning | 1-1-0 UFC | #4323 | |
 | Junior Hernandez | 2-0-1 REC | #2116 |  |
 | Justin Burlinson | 3-1-0 REC | #2547 | |