Combattants Brésil
| 551 |  | Kayck Alencar | 0-1-0 REC | #6267 |  |
| 552 |  | Kaynan Kruschewsky | 0-2-0 UFC | #4002 | |
| 553 |  | Kelly Ottoni | 0-1-0 REC | #7480 | |
| 554 |  | Kerisson Leal | 0-2-0 REC | #7295 | |
| 555 |  | Ketlen Souza | 4-3-0 UFC | #382 | |
| 556 |  | Ketlen Vieira | 10-5-0 UFC | #346 | |
| 557 |  | Kevin Christian | 0-2-0 UFC | #2155 | |
| 558 |  | Keweny Lopes | 3-4-0 REC | #2537 | |
| 559 |  | Killys Mota | 3-1-0 REC | #3687 | |
| 560 |  | Kleber Koike | 2-3-0 REC | #1950 | |
| 561 |  | Kleber Silva | 2-3-0 REC | #3860 | |
| 562 |  | Kleberson Sousa | 0-1-0 REC | #6840 | |
| 563 |  | Kleydson Rodrigues | 1-3-0 UFC | #3372 | |
| 564 |  | Klidson Abreu | 1-2-0, 1NC UFC | #1540 | |
| 565 |  | Kristiany Carvalho | #8036 | | |
| 566 |  | Kron Gracie | 1-3-0 UFC | #2692 | |
| 567 |  | Laisa Silva | 1-0-0 REC | #2001 | |
| 568 |  | Lany Silva | 3-2-0 REC | #2644 | |
| 569 |  | Lara Procopio | 1-2-0 UFC | #4569 | |
| 570 |  | Larissa Pacheco | 0-2-0 UFC | #589 | |
| 571 |  | Laryssa Leila | 0-1-0 REC | #6755 | |
| 572 |  | Lazaro Junior | 0-1-0 REC | #5477 | |
| 573 |  | Leandro Barbosa | 0-1-0 REC | #7544 | |
| 574 |  | Leandro Camargo | 0-3-0 REC | #3415 | |
| 575 |  | Leandro Higo | 2-3-0 REC | #3122 | |