Tous les combattants
 | Kaytlin Neil | 2-1-0 REC | #4148 |  |
 | Kazakbai Tilenov | 0-1-0 REC | #6544 |  |
 | Kazbek Damaev | 0-1-0 REC | #6499 |  |
 | Kazuhiro Nakamura | 0-2-0 UFC | #4892 |  |
 | Kazuki Aimoto | #7840 | | |
 | Kazuki Tokudome | 1-3-0 UFC | #3950 | |
 | Kazuma Maruyama | 0-1-0 REC | #6683 | |
 | Kazumasa Majima | 2-1-0 REC | #816 | |
 | Kazuo Takahashi | 1-0-0 UFC | #5130 | |
 | Kazushi Sakuraba | 1-0-0, 1NC UFC | #3849 | |
 | KB Bhullar | 0-2-0 UFC | #5329 |  |
 | Keegan Witbeck | 0-1-0 REC | #7407 | |
 | Kegan Agnew | 0-1-0 REC | #7131 | |
 | Kegan Gennrich | 2-2-0 REC | #3745 | |
 | Keigo Kunihara | 0-1-0 UFC | #7183 | |
 | Keiichiro Nakamura | 3-0-0 REC | #1075 | |
 | Keiichiro Yamamiya | 0-1-0 UFC | #7117 | |
 | Keir Harvie | 2-3-0 REC | #3472 |  |
 | Keisuke Sasu | 1-4-0 REC | #2985 | |
 | Keita Nakamura | 4-7-0 UFC | #2333 | |
 | Keith Berish | 0-1-0, 1NC UFC | #4733 | |
 | Keith Hackney | 2-2-0 UFC | #2982 | |
 | Keith Jardine | 6-7-0 UFC | #1702 | |
 | Keith Keogh | 3-0-0 REC | #1012 |  |
 | Keith Mielke | 0-1-0 UFC | #6514 | |