Poids Plumes Hommes
 | Karol Rysavy | 8-7-1 REC | #886 |  |
 | Karshyga Dautbek | 4-0-0, 1NC REC | #586 |  |
 | Kazakbai Tilenov | 0-1-0 REC | #6442 |  |
 | Kazuki Aimoto | #7952 |  | |
 | Kazumasa Majima | 2-2-0 REC | #1079 | |
 | Keegan Witbeck | 0-1-0 REC | #7659 |  |
 | Keiichiro Nakamura | 3-0-0 REC | #1404 | |
 | Keisuke Sasu | 1-4-0 REC | #3098 | |
 | Keith Keogh | 3-0-0 REC | #1352 |  |
 | Kenny Florian | 12-5-0 UFC | #489 | |
 | Keremuaili Maimaitituoheti | 0-1-0 REC | #7138 |  |
 | Kestin McClain | 1-0-0 REC | #1998 | |
 | Kevin Aguilar | 2-4-0 UFC | #3083 | |
 | Kevin Boehm | 0-2-0 REC | #5773 | |
 | Kevin Croom | 0-3-0, 1NC UFC | #4441 | |
 | Kevin Judes | 1-0-0 REC | #7796 |  |
 | Kevin Petshi | 0-1-0 REC | #5496 | |
 | Kevin Rosas | #7973 | | |
 | Kevin Vallejos | 4-0-0 UFC | #284 |  |
 | Keweny Lopes | 3-4-0 REC | #2564 |  |