Poids Mi-Moyens Hommes
 | Ilya Kovalev | 1-1-0 REC | #5000 |  |
 | Imran Daurbekov | 0-1-0 REC | #6589 |  |
 | Ion Surdu | 6-4-0 REC | #372 |  |
 | Isaac Vallie-Flagg | 1-3-0 UFC | #4208 |  |
 | Isaiah Skidmore | 0-1-0 REC | #5859 | |
 | Isaiah Watkins | #7800 | | |
 | Iskandar Mamadaliev | 2-1-0 REC | #1548 |  |
 | Islam Dulatov | 1-0-0 UFC | #1374 | |
 | Islam Khapilaev | 0-1-0 REC | #6619 | |
 | Islam Makhachev | 17-1-0 UFC | #1 | |
 | Italo Gomes | 0-2-0 REC | #4049 |  |
 | Itso Babulaidze | 2-0-0 REC | #4374 |  |
 | Ivan Jorge | 2-2-0 UFC | #3361 | |
 | Ivan Soloviev | 1-2-0 REC | #2151 | |
 | Ivica Truscek | 2-1-0 REC | #1779 |  |
 | J.P. Saint Louis | 1-0-0 REC | #2630 | |
 | Jack Congdon | 0-1-0 REC | #5226 | |
 | Jack Dedames | #7554 |  | |
 | Jack Della Maddalena | 8-2-0 UFC | #51 |  |
 | Jack Grant | 1-2-0 REC | #4062 | |