Tous les combattants
 | Islam Yunusov | #7800 |  | |
 | Islambek Baktybek Uulu | #7770 |  | |
 | Islem Masraf | 2-2-0 REC | #2703 |  |
 | Ismael Bonfim | 2-4-0 UFC | #381 |  |
 | Ismail Ismailov | 0-1-0 REC | #6641 | |
 | Ismail Israilov | 1-0-0 REC | #7395 | |
 | Ismail Kelemetov | 1-0-0 REC | #6258 | |
 | Ismail Naurdiev | 4-3-0 UFC | #1170 |  |
 | Israel Adesanya | 13-6-0 UFC | #33 |  |
 | Israel Aquino | 0-1-0 REC | #6671 |  |
 | Israel Delgado | 1-1-0 REC | #6048 | |
 | Issa Hosokawa | 0-1-0 REC | #6943 |  |
 | Issa Isakov | 0-1-0 REC | #4522 |  |
 | Issei Tamura | 1-2-0 UFC | #4343 | |
| Issouf Doumbia | 0-1-0 REC | #6139 | |
 | Istela Nunes | 0-5-0 UFC | #2784 | |
| Istvan Schulcz | 1-0-0 REC | #7844 |  |
 | Italo Cruz | 2-1-0 REC | #1578 | |
 | Italo Gomes | 0-2-0 REC | #4405 | |
 | Italo Julio | 0-1-0 REC | #7545 | |
 | Italo Ribeiro | 0-2-0 REC | #5721 | |
 | Itay Tratner | 0-1-0 REC | #7471 |  |
 | Itso Babulaidze | 2-0-0 REC | #4553 |  |
 | Itsuki Hirata | #5794 | | |
 | Iuri Alcantara | 10-7-0, 1NC UFC | #1015 | |