Tous les combattants
 | Kirill Grishenko | 1-0-0 REC | #2348 |  |
 | Kirill Kornilov | 4-2-0 REC | #1356 |  |
 | Kirill Kudaktin | 0-1-0 REC | #5936 | |
 | Kirill Medvedovski | 0-1-0 REC | #7271 |  |
 | Kirill Negru | 0-1-0 REC | #6218 |  |
 | Kiru Sahota | 0-1-0 UFC | #3004 |  |
 | Kisa Miyake | 0-1-0 REC | #5827 |  |
 | Kishvar Khudoyorov | 0-1-0 REC | #7561 | |
 | Kit Cope | 0-1-0 UFC | #5480 |  |
 | Kitt Campbell | 2-0-0 REC | #2418 |  |
 | Kiya O'Sullivan | 0-1-0 REC | #5222 |  |
 | Kkhiri Kkhiriev | 2-0-0 REC | #1506 | |
 | Klaudia Sygula | 2-1-0 UFC | #1445 |  |
 | Kleber Koike | 2-4-0 REC | #1776 |  |
 | Kleber Silva | 2-3-0 REC | #3857 | |
 | Kleberson Sousa | 0-1-0 REC | #6809 | |
 | Kleydson Rodrigues | 1-3-0 UFC | #3403 | |
 | Klidson Abreu | 1-2-0, 1NC UFC | #1586 | |
 | Kodai Yamasaki | 0-1-0 REC | #6275 | |
 | Kody Steele | 1-1-0 UFC | #939 | |
 | Kohl Laren | 0-3-0 REC | #3391 | |
 | Koji Kitao | 0-1-0 UFC | #5105 | |
 | Koji Oishi | 0-2-0 UFC | #5210 | |
 | Koji Takeda | 3-2-0 REC | #334 | |
 | Koki Akada | 0-4-0 REC | #3308 | |