Poids Lourds Hommes
 | Kerry Schall | 0-1-0 UFC | #4998 |  |
 | Kevin Ferguson | 1-1-0 UFC | #1609 | |
 | Kevin Jordan | 0-2-0 UFC | #4926 | |
 | Kevin Rosier | 1-2-0 UFC | #3883 | |
 | Kevin Szaflarski | 0-1-0 REC | #6748 |  |
 | Khadis Ibragimov | 0-4-0 UFC | #1102 |  |
 | Khetag Sabeev | #7868 | | |
 | Kimo Leopoldo | 2-4-0 UFC | #2780 | |
 | King Edokpolo | 2-0-0 REC | #2855 |  |
 | Kirill Grishenko | 1-0-0 REC | #2301 |  |
 | Kirill Kornilov | 4-2-0 REC | #1288 | |
 | Klidson Abreu | 1-2-0, 1NC UFC | #1553 |  |
 | Koji Kitao | 0-1-0 UFC | #5040 | |
 | Konstantin Erokhin | 0-2-0 UFC | #4961 | |
 | Kousuke Kindaichi | 0-1-0 REC | #6504 | |
| Kovacs Zsombor | 0-1-0 REC | #7945 |  |
 | Kristof Midoux | 0-1-0 UFC | #3020 |  |
 | Lamine Sene | 0-2-0 REC | #3512 |  |
 | Larry Cureton | 0-2-0 UFC | #5231 | |
 | Larry Gonzales | 0-2-0 REC | #5013 | |