Poids Lourds Hommes
 | Justin Wren | 0-1-0 UFC | #6733 |  |
 | Kacper Paczoski | 1-0-0 REC | #1832 |  |
 | Kamil Gawryjolek | 2-2-0 REC | #3700 | |
 | Kamil Minda | 2-2-0 REC | #4744 | |
 | Karl Williams | 3-1-0 UFC | #1497 |  |
 | Karrar Hammodi | #6993 |  | |
 | Kasim Aras | 2-2-0 REC | #1568 |  |
 | Katsuhisa Fujii | 1-1-0 UFC | #5291 |  |
 | Katsuyoshi Sasaki | 0-1-0 REC | #6886 | |
 | Keigo Kunihara | 0-1-0 UFC | #6915 | |
 | Kelvin Tiller | 3-4-0 REC | #3518 | |
 | Ken Shamrock | 7-6-2 UFC | #598 | |
 | Kennedy Nzechukwu | 8-6-1 UFC | #452 |  |
 | Kent Mafileo | 0-1-0 REC | #6751 | |
 | Kenzo Soares Silva | 3-2-0 REC | #2465 | |
 | Kerisson Leal | 0-2-0 REC | #7016 |  |
 | Kerry Schall | 0-1-0 UFC | #4790 | |
 | Kevin Ferguson | 1-1-0 UFC | #1565 | |
 | Kevin Jordan | 0-2-0 UFC | #5052 | |
 | Kevin Rosier | 1-2-0 UFC | #3758 | |