Combattants Brésil
| 426 |  | Isaias Simoes | 0-1-0 REC | #7501 |  |
| 427 |  | Ismael Bonfim | 2-4-0 UFC | #317 | |
| 428 |  | Istela Nunes | 0-5-0 UFC | #2767 | |
| 429 |  | Italo Cruz | 2-1-0 REC | #1448 | |
| 430 |  | Italo Gomes | 0-2-0 REC | #4321 | |
| 431 |  | Italo Julio | 0-1-0 REC | #7561 | |
| 432 |  | Italo Ribeiro | 0-2-0 REC | #5819 | |
| 433 |  | Iuri Alcantara | 10-7-0, 1NC UFC | #1024 | |
| 434 |  | Ivan Alves | 0-1-0 REC | #6915 | |
| 435 |  | Ivan Jorge | 2-2-0 UFC | #3496 | |
| 436 |  | Izaque Simao | 0-1-0 REC | #7084 | |
| 437 |  | Jady Menezes | 2-0-0 REC | #3091 | |
| 438 |  | Jafel Filho | 3-3-0 UFC | #1347 | |
| 439 |  | Jailton Almeida | 8-3-0 UFC | #400 | |
| 440 |  | Jair de Oliveira | 0-1-0 REC | #5262 | |
| 441 |  | Jair Farias | 0-1-0 REC | #7114 | |
| 442 |  | Jairo Pacheco | 0-2-0 REC | #6275 | |
| 443 |  | Janaina Silva | 0-3-0 REC | #4031 | |
| 444 |  | Janaisa Morandin | 0-2-0 REC | #4969 | |
| 445 |  | Janderson Barreto | 0-1-0 REC | #5402 | |
| 446 |  | Jansey Silva | 0-1-0 REC | #7152 | |
| 447 |  | Jaqueline Amorim | 5-2-0 UFC | #458 | |
| 448 |  | Jaqueline Ferreira | #7797 | | |
| 449 |  | Jean Matos | 0-1-0 REC | #7457 | |
| 450 |  | Jean Matsumoto | 4-2-0 UFC | #481 | |