Poids Mi-Moyens Hommes
 | Isaiah Watkins | 1-0-0 REC | #1132 |  |
 | Iskandar Mamadaliev | 2-1-0 REC | #1995 |  |
 | Islam Dulatov | 1-0-0 UFC | #916 |  |
 | Islam Khapilaev | 0-1-0 REC | #6870 |  |
 | Islam Makhachev | 18-1-0 UFC | #1 |  |
 | Ismail Ismailov | 0-1-0 REC | #6653 | |
 | Italo Gomes | 0-2-0 REC | #4434 |  |
 | Itso Babulaidze | 2-0-0 REC | #4567 |  |
 | Ivan Jorge | 2-2-0 UFC | #3527 | |
 | Ivan Soloviev | 1-2-0 REC | #2609 | |
 | Ivica Truscek | 2-1-0 REC | #2264 |  |
 | Iwan Tagner | 1-0-0 REC | #959 | |
 | J.P. Saint Louis | 1-0-0 REC | #3191 | |
 | Jack Congdon | 0-1-0 REC | #5258 | |
 | Jack Dedames | #7893 |  | |
 | Jack Della Maddalena | 8-2-0 UFC | #63 |  |
 | Jack Grant | 2-2-0 REC | #1040 | |
 | Jack Shields | 4-3-0, 1NC UFC | #1622 | |
 | Jack Tucker | 0-1-0 REC | #6520 |  |
 | Jack Woodard | 0-1-0 REC | #4778 | |