Tous les combattants
 | Kayck Alencar | 0-1-0 REC | #6267 |  |
 | Kayla Harrison | 3-0-0 UFC | #8 |  |
 | Kayla Yontef | 1-0-0 REC | #5635 | |
 | Kaynan Kruschewsky | 0-2-0 UFC | #4002 | |
 | Kaytlin Neil | 2-1-0 REC | #4205 | |
 | Kazakbai Tilenov | 0-1-0 REC | #6642 |  |
 | Kazbek Damaev | 0-1-0 REC | #6624 |  |
 | Kazuhiro Nakamura | 0-2-0 UFC | #4972 |  |
 | Kazuki Aimoto | #7883 | | |
 | Kazuki Tokudome | 1-3-0 UFC | #3979 | |
 | Kazuma Maruyama | 0-1-0 REC | #6646 | |
 | Kazumasa Majima | 2-1-0 REC | #1040 | |
 | Kazuo Takahashi | 1-0-0 UFC | #5150 | |
 | Kazushi Sakuraba | 1-0-0, 1NC UFC | #3920 | |
 | KB Bhullar | 0-2-0 UFC | #5463 |  |
 | Keegan Witbeck | 0-1-0 REC | #7546 | |
 | Kegan Agnew | 0-1-0 REC | #7209 | |
 | Kegan Gennrich | 3-2-0 REC | #1124 | |
 | Keigo Kunihara | 0-1-0 UFC | #7156 | |
 | Keiichiro Nakamura | 3-0-0 REC | #1240 | |
 | Keiichiro Yamamiya | 0-1-0 UFC | #7112 | |
 | Keir Harvie | 2-3-0 REC | #3572 |  |
 | Keisuke Sasu | 1-4-0 REC | #3070 | |
 | Keita Nakamura | 4-7-0 UFC | #2364 | |
 | Keith Berish | 0-1-0, 1NC UFC | #4776 | |