Poids Moyens Hommes
 | Keith Rockel | 1-1-0 UFC | #5474 |  |
 | Kellian Streicher | #7897 |  | |
 | Kelvin Gastelum | 14-11-0, 1NC UFC | #237 | |
 | Kendall Grove | 7-6-0 UFC | #1802 | |
 | Kenichi Yamamoto | 2-1-0 UFC | #3534 |  |
 | Kennedy Rayomba | 0-2-0 REC | #4338 |  |
 | Kerim Engizek | 6-1-0 REC | #1101 |  |
 | Kevin Casey | 1-3-1, 2NC UFC | #3623 | |
 | Kevin Del | 2-0-0 REC | #1771 | |
 | Kevin Hangs | 0-1-0 REC | #6274 | |
 | Keyes Nelson | 0-1-0 REC | #7342 | |
 | Khadzhimurat Bestaev | 0-2-0 REC | #5650 |  |
 | Khamzat Chimaev | 9-1-0 UFC | #25 |  |
 | Kirill Medvedovski | 0-1-0 REC | #7281 |  |
 | Korey Kuppe | 0-3-0 REC | #5144 | |
 | Kris McCray | 0-3-0 UFC | #4275 | |
 | Krystian Bielski | 1-3-0 REC | #5033 |  |
 | Krzysztof Jotko | 11-6-0 UFC | #182 | |
 | Kyle Daukaus | 4-5-0, 1NC UFC | #484 | |
 | Kyle McClurkin | 1-0-0 REC | #6984 |  |