Tous les combattants
 | Kiru Sahota | 0-1-0 UFC | #2845 |  |
 | Kisa Miyake | 0-1-0 REC | #5622 |  |
 | Kishvar Khudoyorov | 0-1-0 REC | #7016 |  |
 | Kit Cope | 0-1-0 UFC | #5234 |  |
 | Kitt Campbell | 2-0-0 REC | #1931 |  |
 | Kiya O'Sullivan | 0-1-0 REC | #4893 |  |
 | Kkhiri Kkhiriev | 2-0-0 REC | #858 | |
 | Klaudia Sygula | 2-1-0 UFC | #1296 |  |
 | Kleber Koike Erbst | 2-3-0 REC | #1566 |  |
 | Kleber Silva | 2-3-0 REC | #3592 | |
 | Kleberson Sousa | 0-1-0 REC | #6444 | |
 | Kleydson Rodrigues | 1-3-0 UFC | #3173 | |
 | Klidson Abreu | 1-2-0, 1NC UFC | #1264 | |
 | Kodai Yamasaki | 0-1-0 REC | #6048 | |
 | Kody Steele | 1-1-0 UFC | #420 | |
 | Kohl Laren | 0-3-0 REC | #3115 | |
 | Koji Kitao | 0-1-0 UFC | #4653 | |
 | Koji Oishi | 0-2-0 UFC | #5096 | |
 | Koji Takeda | 2-2-0 REC | #1482 | |
 | Koki Akada | 0-3-0 REC | #3584 | |
 | Kolton Englund | 0-2-0 REC | #4056 | |
 | Konmon Deh | 0-2-0 REC | #4935 |  |
 | Konrad Dyrschka | 3-0-0 REC | #2101 |  |
 | Konrad Rusinski | 3-2-0 REC | #312 | |
 | Konstantin Erokhin | 0-2-0 UFC | #4978 | |