Tous les combattants
 | 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 | |
| Ivan Alves | 0-1-0 REC | #6945 | |
 | Ivan Bogdanov | 2-2-0 REC | #2135 |  |
 | Ivan Buchinger | 8-3-0 REC | #951 |  |
 | Ivan Erslan | 1-3-0 UFC | #1122 |  |
 | Ivan Gnizditskiy | #7709 | | |
 | Ivan Jorge | 2-2-0 UFC | #3514 | |
 | Ivan Klevets | 2-2-0 REC | #484 |  |
 | Ivan Menjivar | 4-5-0 UFC | #2870 |  |
 | Ivan Romanov | 0-1-0 REC | #5985 | |
 | Ivan Salaverry | 3-4-0 UFC | #3056 | |