Tous les combattants
 | Kayck Alencar | 0-1-0 REC | #6410 |  |
 | Kayla Harrison | 3-0-0 UFC | #9 |  |
 | Kayla Yontef | 1-0-0 REC | #5646 | |
 | Kaynan Kruschewsky | 0-2-0 UFC | #3958 | |
 | Kaytlin Neil | 2-1-0 REC | #4174 | |
 | Kazakbai Tilenov | 0-1-0 REC | #6614 |  |
 | Kazbek Damaev | 0-1-0 REC | #6592 |  |
 | Kazuhiro Nakamura | 0-2-0 UFC | #4924 |  |
 | Kazuki Aimoto | #7815 | | |
 | Kazuki Tokudome | 1-3-0 UFC | #3965 | |
 | Kazuma Maruyama | 0-1-0 REC | #6679 | |
 | Kazumasa Majima | 2-1-0 REC | #905 | |
 | Kazuo Takahashi | 1-0-0 UFC | #5119 | |
 | Kazushi Sakuraba | 1-0-0, 1NC UFC | #3878 | |
 | KB Bhullar | 0-2-0 UFC | #5407 |  |
 | Keegan Witbeck | 0-1-0 REC | #7482 | |
 | Kegan Agnew | 0-1-0 REC | #7120 | |
 | Kegan Gennrich | 2-2-0 REC | #3786 | |
 | Keigo Kunihara | 0-1-0 UFC | #7158 | |
 | Keiichiro Nakamura | 3-0-0 REC | #1146 | |
 | Keiichiro Yamamiya | 0-1-0 UFC | #7049 | |
 | Keir Harvie | 2-3-0 REC | #3517 |  |
 | Keisuke Sasu | 1-4-0 REC | #3043 | |
 | Keita Nakamura | 4-7-0 UFC | #2339 | |
 | Keith Berish | 0-1-0, 1NC UFC | #4733 | |