Poids Moyens Hommes
 | Keith Jardine | 6-7-0 UFC | #1683 |  |
 | Keith Rockel | 1-1-0 UFC | #5415 | |
 | Kellian Streicher | #7908 |  | |
 | Kelvin Gastelum | 14-11-0, 1NC UFC | #224 | |
 | Kendall Grove | 7-6-0 UFC | #1791 | |
 | Kenichi Yamamoto | 2-1-0 UFC | #3554 |  |
 | Kennedy Rayomba | 0-2-0 REC | #4382 |  |
 | Kerim Engizek | 6-2-0 REC | #1090 |  |
 | Kevin Casey | 1-3-1, 2NC UFC | #3626 | |
 | Kevin Del | 2-0-0 REC | #1796 | |
 | Kevin Hangs | 0-1-0 REC | #6127 | |
 | Keyes Nelson | 0-1-0 REC | #7386 | |
 | Khadzhimurat Bestaev | 0-2-0 REC | #5698 |  |
 | Khamzat Chimaev | 9-1-0 UFC | #24 |  |
 | Kirill Medvedovski | 0-1-0 REC | #7261 |  |
 | Korey Kuppe | 0-3-0 REC | #5139 | |
 | Kris McCray | 0-3-0 UFC | #4242 | |
 | Krystian Bielski | 1-3-0 REC | #5063 |  |
 | Krzysztof Jotko | 11-6-0 UFC | #182 | |
 | Kyle Daukaus | 4-5-0, 1NC UFC | #494 | |