Poids Plumes Hommes
 | Kazakbai Tilenov | 0-1-0 REC | #6514 |  |
 | Kazuki Aimoto | #7783 |  | |
 | Kazumasa Majima | 2-1-0 REC | #682 | |
 | Keegan Witbeck | 0-1-0 REC | #7322 |  |
 | Keiichiro Nakamura | 3-0-0 REC | #1016 | |
 | Keisuke Sasu | 1-4-0 REC | #2935 | |
 | Keith Keogh | 3-0-0 REC | #913 |  |
 | Kenny Florian | 12-5-0 UFC | #463 | |
 | Keremuaili Maimaitituoheti | 0-1-0 REC | #6795 |  |
 | Kestin McClain | #7897 | | |
 | Kevin Aguilar | 2-4-0 UFC | #2983 | |
 | Kevin Boehm | 0-2-0 REC | #5751 | |
 | Kevin Croom | 0-3-0, 1NC UFC | #4442 | |
 | Kevin Judes | 1-0-0 REC | #7751 |  |
 | Kevin Petshi | 0-1-0 REC | #5519 | |
 | Kevin Rosas | #7781 | | |
 | Kevin Vallejos | 4-0-0 UFC | #203 |  |
 | Keweny Lopes | 3-4-0 REC | #2427 |  |
 | Khakimzhan Davronov | 0-1-0 REC | #6815 |  |
 | Khalid Musaev | 0-1-0 REC | #5961 | |