Tous les combattants
 | Jack Sheehan | #8074 |  | |
 | Jack Shields | 4-3-0, 1NC UFC | #1623 | |
 | Jack Shore | 6-3-0 UFC | #1642 |  |
 | Jack Tucker | 0-1-0 REC | #6570 | |
 | Jack Woodard | 0-1-0 REC | #4752 |  |
 | Jackie Cataline | 4-3-0 REC | #2465 | |
| Jackie Lee | 0-1-0 UFC | #6789 | |
 | Jackson Clarke | 1-0-0 REC | #6828 | |
 | Jackson Glass | 1-0-0 REC | #834 | |
 | Jackson McVey | 1-2-0 UFC | #792 | |
 | Jackson Ross | 0-1-0 REC | #5184 | |
 | Jacky Jeanne | 6-2-0 REC | #1545 |  |
 | Jacob Bohn | 0-1-0 REC | #6959 | |
| Jacob Hill | 0-1-0 REC | #7272 | |
 | Jacob Horton | 0-1-0 REC | #7602 | |
 | Jacob Kilburn | 0-2-0 UFC | #4008 | |
 | Jacob Lagoa | 1-0-0 REC | #1945 | |
 | Jacob Malkoun | 6-3-0 UFC | #646 |  |
 | Jacob Pais | 0-1-0 REC | #6596 | |
 | Jacob Romero | 0-1-0 REC | #7124 | |
 | Jacob Rosales | 1-3-0 REC | #2710 | |
 | Jacob Silva | 0-2-0 REC | #6458 | |
 | Jacob Thrall | 0-1-0 REC | #6276 | |
 | Jacob Volkmann | 6-4-0 UFC | #2250 | |
 | Jacob Wiggins | 0-1-0 REC | #5334 | |