Tous les combattants
 | Krzysztof Mendlewski | 0-1-0 REC | #4972 |  |
 | Krzysztof Soszynski | 6-3-0 UFC | #1992 |  |
 | Kuat Khamitov | 1-0-0 REC | #2087 |  |
 | Kun Marcell | 1-0-0 REC | #7370 |  |
 | Kuniyoshi Hironaka | 1-3-0 UFC | #3897 |  |
 | Kunle Lawal | 1-0-0 REC | #2365 |  |
 | Kurban Gadzhiev | 1-2-0 REC | #3327 |  |
 | Kurban Khatataev | 1-0-0 REC | #1134 | |
 | Kurban Taygibov | 2-1-0 REC | #539 | |
 | Kurbanali Isabekov | 0-1-0 REC | #5245 | |
 | Kurt Holobaugh | 2-7-0 UFC | #1966 |  |
 | Kurt Pellegrino | 7-5-0 UFC | #1560 | |
 | Kurtis Campbell | 0-1-0 UFC | #918 |  |
 | Kurtis Ellis | 1-1-0 REC | #6058 | |
 | Kuushi Ishizaka | 1-0-0 REC | #2198 | |
 | Kuya Ito | 0-1-0 REC | #5557 | |
 | Kwan Ho Kwak | 0-2-0 UFC | #5216 |  |
 | Ky Bennett | 1-1-0 REC | #4787 | |
 | Kye Stevens | 0-2-0 REC | #6258 | |
 | Kyle Bochniak | 2-5-0 UFC | #2432 | |
 | Kyle Bradley | 1-3-0 UFC | #3406 | |
 | Kyle Clark | 1-0-0 REC | #719 | |
 | Kyle Crutchmer | 2-1-0 REC | #4243 | |
 | Kyle Daukaus | 4-4-0, 1NC UFC | #495 | |
 | Kyle Driscoll | 3-0-0 REC | #2043 | |