Tous les combattants
 | Irgit Oveenchi | 0-1-0 REC | #6421 |  |
 | Irina Alekseeva | 1-3-0 UFC | #2731 | |
 | Iris Marmouset | 0-1-0 REC | #6156 |  |
 | Irlaine Gasai | 0-1-0 REC | #7708 |  |
 | Irwin Rivera | 1-2-0 UFC | #4012 |  |
 | Isa Magomedov | #7976 | | |
 | Isaac Dulgarian | 2-2-0 UFC | #2582 |  |
 | Isaac Muluh | 0-1-0 REC | #4225 |  |
 | Isaac Omeda | 0-0-1 REC | #6408 |  |
 | Isaac Thomson | 0-1-0 UFC | #1414 |  |
 | Isaac Vallie-Flagg | 1-3-0 UFC | #4415 | |
 | Isabela de Padua | 0-1-0 REC | #7176 | |
 | Isabella de Padua | 0-1-0 UFC | #6580 | |
 | Isai Ramos | 1-1-0 REC | #4635 |  |
 | Isaiah Arechiga | 0-1-0 REC | #7154 | |
 | Isaiah Diggs | 0-1-0 REC | #6354 | |
 | Isaiah Figueroa | 0-1-0 REC | #7617 | |
 | Isaiah Flores | 0-1-0 REC | #7481 | |
 | Isaiah Hokit | 2-0-0 REC | #4395 | |
 | Isaiah Joans | 0-1-0 REC | #7357 | |
 | Isaiah Mahto | #8022 | | |
 | Isaiah Pinson | 3-3-0 REC | #2304 | |
 | Isaiah Skidmore | 0-1-0 REC | #6285 | |
 | Isaiah Watkins | 1-0-0 REC | #1061 | |
 | Isaias Simoes | 0-1-0 REC | #7501 | |