Tous les combattants
 | Jimmy Flick | 2-4-0 UFC | #2403 |  |
 | Jimmy Lawson | 0-1-0 REC | #5805 | |
 | Jimmy Meza | 0-1-0 REC | #7796 | |
 | Jimmy Quinlan | 0-1-0 UFC | #7200 | |
 | Jimmy Quinn | 3-2-0 REC | #3896 |  |
 | Jimmy Vienot | 1-1-0 REC | #1753 |  |
 | Jimmy Washington | 0-1-0 REC | #5899 | |
 | Jin Aoi | 0-2-0 REC | #4038 |  |
 | Jin Soo Son | 0-2-0 UFC | #4519 |  |
 | Jin Tanaka | 1-0-0 REC | #1842 | |
 | Jin Wakita | 0-1-0 REC | #5951 | |
 | Jingliang Li | 11-7-0 UFC | #461 |  |
 | Jinh Yu Frey | 2-6-0 UFC | #2906 | |
 | Jiniushiyue | 3-2-0 REC | #1553 | |
 | Jinnosuke Kashimura | 2-3-0 REC | #1242 | |
 | Jiri Prochazka | 6-3-0 UFC | #70 |  |
 | Jivko Stoimenov | 0-1-0 REC | #7426 |  |
 | Jixie Molapo | 1-1-0 REC | #2921 | |
 | JJ Aldrich | 11-6-0 UFC | #403 | |
 | JJ Okanovich | 1-0-0 REC | #6915 | |
 | Jo Arai | 0-2-0 REC | #4681 | |
 | Joab Souza | 0-1-0 REC | #6431 |  |
 | Joachim Christensen | 1-3-0 UFC | #3917 |  |
 | Joan Arastey | 0-2-0 REC | #6426 |  |
 | Joan Rodriguez | 0-1-0 REC | #5396 | |