Tous les combattants
 | Krzysztof Geburek | 0-1-0 REC | #5399 |  |
 | Krzysztof Glowacki | 1-1-0, 1NC REC | #4212 | |
 | Krzysztof Jotko | 11-6-0 UFC | #159 | |
 | Krzysztof Mendlewski | 0-1-0 REC | #5255 | |
 | Krzysztof Soszynski | 6-3-0 UFC | #2088 |  |
 | Kuat Khamitov | 1-0-0 REC | #2372 |  |
 | Kun Marcell | 1-0-0 REC | #7579 |  |
 | Kuniyoshi Hironaka | 1-3-0 UFC | #4051 |  |
 | Kunle Lawal | 1-1-0 REC | #2330 |  |
 | Kurban Gadzhiev | 1-2-0 REC | #3563 |  |
 | Kurban Khatataev | 1-0-0 REC | #1527 | |
 | Kurban Taygibov | 2-1-0 REC | #943 | |
 | Kurbanali Isabekov | 0-1-0 REC | #5364 | |
 | Kurt Holobaugh | 2-7-0 UFC | #2071 |  |
 | Kurt Pellegrino | 7-5-0 UFC | #1624 | |
 | Kurtis Campbell | 0-1-0 UFC | #1198 |  |
 | Kurtis Ellis | 1-1-0 REC | #6268 | |
 | Kuushi Ishizaka | 1-0-0 REC | #2513 | |
 | Kuya Ito | 0-1-0 REC | #5899 | |
 | Kwan Ho Kwak | 0-2-0 UFC | #5406 |  |
 | Ky Bennett | 1-1-0 REC | #4751 | |
 | Kye Stevens | 0-2-0 REC | #6448 | |
 | Kyle Bochniak | 2-5-0 UFC | #2559 | |
 | Kyle Bradley | 1-3-0 UFC | #3590 | |
 | Kyle Clark | 1-0-0 REC | #1131 | |