Poids Mi-Lourds Hommes
 | Ivan Erslan | 1-3-0 UFC | #869 |  |
 | Ivan Gnizditskiy | #7673 |  | |
 | Ivan Serati | 0-1-0 UFC | #5810 |  |
 | Iwo Baraniewski | 3-0-0 UFC | #159 |  |
 | Jack Nilson | 1-1-0 UFC | #5186 |  |
 | Jackie Lee | 0-1-0 UFC | #6765 | |
 | Jacky Jeanne | 6-2-0 REC | #1504 |  |
 | Jair de Oliveira | 0-1-0 REC | #5111 |  |
 | Jake O'Brien | 4-3-0 UFC | #2473 | |
 | Jake Rosholt | 1-2-0 UFC | #4587 | |
 | Jakob Nedoh | 3-2-0 REC | #3871 |  |
 | Jamahal Hill | 6-4-0, 1NC UFC | #138 | |
 | Jamelle Jones | 1-3-0 REC | #4309 | |
 | James Hammortree | 0-1-0 UFC | #6421 | |
 | James Lee | 0-1-0 UFC | #5479 | |
 | James McSweeney | 1-2-0 UFC | #4435 |  |
 | James Webb | 3-1-0 REC | #2522 | |
 | Jamie Abdallah | 0-2-0 REC | #6440 |  |
 | Jamie MacDonald | 0-1-0 REC | #7322 |  |
 | Jan Blachowicz | 12-8-2 UFC | #67 | |