Poids Mi-Moyens Hommes
 | Igor Araujo | 2-2-0 UFC | #3018 |  |
 | Igor Cavalcanti | 0-1-0 REC | #5481 | |
 | Igor Sabanov | 1-0-0 REC | #1359 |  |
 | Igor Tanabe | #6864 | | |
 | Ilya Kovalev | 1-1-0 REC | #4585 | |
 | Ion Surdu | 5-4-0 REC | #874 |  |
 | Isaac Vallie-Flagg | 1-3-0 UFC | #3973 |  |
 | Isaiah Skidmore | 0-1-0 REC | #5536 | |
 | Iskandar Mamadaliev | 2-1-0 REC | #1094 |  |
 | Islam Dulatov | 1-0-0 UFC | #1103 |  |
 | Islam Khapilaev | 0-1-0 REC | #6262 | |
 | Islam Makhachev | 17-1-0 UFC | #2 | |
 | Italo Gomes | 0-2-0 REC | #3716 | |
 | Itso Babulaidze | 2-0-0 REC | #4275 |  |
 | Ivan Jorge | 2-2-0 UFC | #3215 | |
 | Ivan Soloviev | 1-2-0 REC | #1780 | |
 | Ivica Truscek | 2-1-0 REC | #1380 |  |
 | J.P. Saint Louis | 1-0-0 REC | #2227 | |
 | Jacek Gac | 1-1-0 REC | #2651 |  |
 | Jack Congdon | 0-1-0 REC | #4961 | |