Tous les combattants
 | Imran Dzhavadov | 0-2-0 REC | #3910 |  |
 | In Soo Hwang | 0-1-0 REC | #4564 |  |
 | Inglesson de Lara | 1-2-0 REC | #3672 |  |
 | Ingrid Silva | 1-0-0 REC | #2672 | |
 | Ioan Harris | 1-3-0 REC | #3244 |  |
 | Ion Cutelaba | 9-11-1 UFC | #292 |  |
 | Ion Surdu | 6-4-0 REC | #581 | |
 | Ion Taburceanu | 0-2-0, 1NC REC | #4554 | |
 | Iony Razafiarison | 1-2-0 REC | #4495 |  |
 | Iras Khizriev | 1-0-0 REC | #2410 |  |
 | Iraskha Khizriev | #7657 | | |
 | Irene Aldana | 8-6-0 UFC | #226 |  |
 | Irgit Oveenchi | 0-1-0 REC | #6249 | |
 | Irina Alekseeva | 1-3-0 UFC | #2700 | |
 | Iris Marmouset | 0-1-0 REC | #5975 | |
 | Irlaine Gasai | 0-1-0 REC | #7633 | |
 | Irwin Rivera | 1-2-0 UFC | #3960 | |
 | Isa Magomedov | #7893 | | |
 | Isaac Dulgarian | 2-2-0 UFC | #2517 |  |
 | Isaac Muluh | 0-1-0 REC | #4102 |  |
 | Isaac Omeda | 0-0-1 REC | #6326 |  |
 | Isaac Thomson | 0-1-0 UFC | #1335 |  |
 | Isaac Vallie-Flagg | 1-3-0 UFC | #4320 | |
 | Isabela de Padua | 0-1-0 REC | #7173 | |
 | Isabella de Padua | 0-1-0 UFC | #6354 | |