Tous les combattants
 | Ioan Harris | 1-3-0 REC | #3427 |  |
 | Ion Cutelaba | 9-11-1 UFC | #427 |  |
 | Ion Surdu | 6-4-0 REC | #999 | |
 | Ion Taburceanu | 0-2-0, 1NC REC | #4792 | |
 | Iony Razafiarison | 1-2-0 REC | #4625 |  |
 | Irakli Kuchukhidze | 0-1-0 REC | #4763 |  |
 | Iras Khizriev | 1-0-0 REC | #2868 |  |
 | Iraskha Khizriev | #7904 | | |
 | Irene Aldana | 8-6-0 UFC | #962 |  |
 | Irgit Oveenchi | 0-1-0 REC | #6673 | |
 | Irina Alekseeva | 1-3-0 UFC | #2854 | |
 | Iris Marmouset | 0-1-0 REC | #6157 | |
 | Irlaine Gasai | 0-1-0 REC | #7978 |  |
 | Irwin Rivera | 1-2-0 UFC | #4181 | |
 | Isa Magomedov | #8106 | | |
 | Isaac Dulgarian | 2-2-0 UFC | #2760 |  |
 | Isaac Moreno | 1-0-0 REC | #1414 | |
 | Isaac Muluh | 0-1-0 REC | #4457 |  |
 | Isaac Omeda | 0-0-1 REC | #6604 |  |
 | Isaac Thomson | 0-1-0 UFC | #1551 |  |
 | Isaac Vallie-Flagg | 1-3-0 UFC | #4535 | |
 | Isabela de Padua | 0-1-0 REC | #7331 | |
 | Isabella de Padua | 0-1-0 UFC | #6901 | |
 | Isai Ramos | 1-1-0 REC | #4725 |  |
 | Isaiah Arechiga | 0-1-0 REC | #7414 | |