Poids Mi-Moyens Hommes
 | Ilya Kovalev | 1-1-0 REC | #4869 |  |
 | Ion Surdu | 6-4-0 REC | #285 |  |
 | Isaac Vallie-Flagg | 1-3-0 UFC | #4143 |  |
 | Isaiah Skidmore | 0-1-0 REC | #5865 | |
 | Isaiah Watkins | #7789 | | |
 | Iskandar Mamadaliev | 2-1-0 REC | #1400 |  |
 | Islam Dulatov | 1-0-0 UFC | #1292 |  |
 | Islam Khapilaev | 0-1-0 REC | #6509 | |
 | Islam Makhachev | 17-1-0 UFC | #1 | |
 | Italo Gomes | 0-2-0 REC | #3949 |  |
 | Itso Babulaidze | 2-0-0 REC | #4369 |  |
 | Ivan Jorge | 2-2-0 UFC | #3311 | |
 | Ivan Soloviev | 1-2-0 REC | #2041 | |
 | Ivica Truscek | 2-1-0 REC | #1645 |  |
 | J.P. Saint Louis | 1-0-0 REC | #2510 | |
 | Jack Congdon | 0-1-0 REC | #5178 | |
 | Jack Dedames | #7489 |  | |
 | Jack Della Maddalena | 8-2-0 UFC | #36 |  |
 | Jack Grant | 1-2-0 REC | #4007 | |
 | Jack Shields | 4-3-0, 1NC UFC | #1527 | |