Tous les combattants
 | Kaytlin Neil | 2-1-0 REC | #3984 |  |
 | Kazakbai Tilenov | 0-1-0 REC | #6723 |  |
 | Kazbek Damaev | 0-1-0 REC | #6139 |  |
 | Kazuhiro Nakamura | 0-2-0 UFC | #4732 |  |
 | Kazuki Aimoto | #7643 | | |
 | Kazuki Tokudome | 1-3-0 UFC | #3827 | |
 | Kazuma Maruyama | 0-1-0 REC | #6634 | |
 | Kazumasa Majima | 2-1-0 REC | #443 | |
 | Kazuo Takahashi | 1-0-0 UFC | #5108 | |
 | Kazushi Sakuraba | 1-0-0, 1NC UFC | #3709 | |
 | KB Bhullar | 0-2-0 UFC | #5256 |  |
 | Keegan Witbeck | 0-1-0 REC | #7271 | |
 | Kegan Agnew | 0-1-0 REC | #6832 | |
 | Kegan Gennrich | 2-2-0 REC | #3534 | |
 | Keigo Kunihara | 0-1-0 UFC | #6926 | |
 | Keiichiro Nakamura | 3-0-0 REC | #797 | |
 | Keiichiro Yamamiya | 0-1-0 UFC | #6918 | |
 | Keir Harvie | 2-3-0 REC | #3244 |  |
 | Keisuke Sasu | 1-3-0 REC | #3429 | |
 | Keita Nakamura | 4-7-0 UFC | #2230 | |
 | Keith Berish | 0-1-0, 1NC UFC | #4634 | |
 | Keith Hackney | 2-2-0 UFC | #2896 | |
 | Keith Jardine | 6-7-0 UFC | #1657 | |
 | Keith Keogh | 3-0-0 REC | #670 |  |
 | Keith Mielke | 0-1-0 UFC | #6214 | |