Poids Mi-Lourds Hommes
 | Ivan Erslan | 1-3-0 UFC | #804 |  |
 | Ivan Gnizditskiy | #7622 |  | |
 | Ivan Serati | 0-1-0 UFC | #5790 |  |
 | Iwo Baraniewski | 3-0-0 UFC | #139 |  |
 | Jack Nilson | 1-1-0 UFC | #5184 |  |
 | Jackie Lee | 0-1-0 UFC | #6770 | |
 | Jacky Jeanne | 6-2-0 REC | #1468 |  |
 | Jair de Oliveira | 0-1-0 REC | #5048 |  |
 | Jake O'Brien | 4-3-0 UFC | #2445 | |
 | Jake Rosholt | 1-2-0 UFC | #4568 | |
 | Jakob Nedoh | 3-2-0 REC | #3819 |  |
 | Jamahal Hill | 6-4-0, 1NC UFC | #138 | |
 | Jamelle Jones | 1-3-0 REC | #4253 | |
 | James Hammortree | 0-1-0 UFC | #6478 | |
 | James Lee | 0-1-0 UFC | #5423 | |
 | James McSweeney | 1-2-0 UFC | #4414 |  |
 | James Webb | 3-1-0 REC | #2476 | |
 | Jamie Abdallah | 0-2-0 REC | #6392 |  |
 | Jamie MacDonald | 0-1-0 REC | #7284 |  |
 | Jan Blachowicz | 12-8-2 UFC | #68 | |