Tous les combattants
 | Kirill Medvedovski | 0-1-0 REC | #7281 |  |
 | Kirill Negru | 0-1-0 REC | #6113 |  |
 | Kiru Sahota | 0-1-0 UFC | #2949 |  |
 | Kisa Miyake | 0-1-0 REC | #5786 |  |
 | Kishvar Khudoyorov | 0-1-0 REC | #7307 |  |
 | Kit Cope | 0-1-0 UFC | #5350 |  |
 | Kitt Campbell | 2-0-0 REC | #2183 |  |
 | Kiya O'Sullivan | 0-1-0 REC | #5060 |  |
 | Kkhiri Kkhiriev | 2-0-0 REC | #1175 | |
 | Klaudia Sygula | 2-1-0 UFC | #1558 |  |
 | Kleber Koike | 2-3-0 REC | #1822 |  |
 | Kleber Silva | 2-3-0 REC | #3779 | |
 | Kleberson Sousa | 0-1-0 REC | #6738 | |
 | Kleydson Rodrigues | 1-3-0 UFC | #3296 | |
 | Klidson Abreu | 1-2-0, 1NC UFC | #1447 | |
 | Kodai Yamasaki | 0-1-0 REC | #6182 | |
 | Kody Steele | 1-1-0 UFC | #668 | |
 | Kohl Laren | 0-3-0 REC | #3252 | |
 | Koji Kitao | 0-1-0 UFC | #4854 | |
 | Koji Oishi | 0-2-0 UFC | #5159 | |
 | Koji Takeda | 2-2-0 REC | #1749 | |
 | Koki Akada | 0-4-0 REC | #3182 | |
 | Kolton Englund | 0-2-0 REC | #4192 | |
 | Konmon Deh | 0-2-0 REC | #4960 |  |
 | Konrad Dyrschka | 3-0-0 REC | #2296 |  |