Tous les combattants
 | Keith Berish | 0-1-0, 1NC UFC | #4493 |  |
 | Keith Hackney | 2-2-0 UFC | #2744 | |
 | Keith Jardine | 6-7-0 UFC | #1623 | |
 | Keith Keogh | 3-0-0 REC | #362 |  |
 | Keith Mielke | 0-1-0 UFC | #5941 | |
 | Keith Rockel | 1-1-0 UFC | #5277 | |
 | Keith Wisniewski | 0-4-0 UFC | #3856 | |
 | Keito Oyama | 2-1-0 REC | #1388 |  |
 | Kellian Streicher | #7519 |  | |
 | Kellie Marin | 0-1-0 REC | #4978 | |
 | Kelly Dullanty | 0-1-0 UFC | #5803 | |
 | Kelly Faszholz | 0-2-0 UFC | #4742 | |
 | Kelly McGill-Velasco | 0-1-0 REC | #5097 | |
 | Kelly Ottoni | 0-1-0 REC | #7061 |  |
 | Kelly Staddon | #7022 |  | |
 | Kelsey DeSantis | 0-1-0 REC | #6453 | |
 | Kelton Sneve | 4-1-0 REC | #930 |  |
 | Kelvin Gastelum | 14-10-0, 1NC UFC | #213 | |
 | Kelvin Rayford | 0-1-0 REC | #6066 | |
 | Kelvin Sterling | 0-1-0 REC | #5717 | |
 | Kelvin Tiller | 3-4-0 REC | #3379 | |
 | Ken Burrs | 0-1-0 REC | #6117 | |
 | Ken Shamrock | 7-6-2 UFC | #576 | |
 | Ken Stone | 2-2-0 UFC | #3267 | |
 | Kenan Song | 6-5-0 UFC | #1362 |  |