Poids Plumes Hommes
 | Kevin Vallejos | 4-0-0 UFC | #296 |  |
 | Keweny Lopes | 3-4-0 REC | #2598 |  |
 | Khakimzhan Davronov | 0-1-0 REC | #7301 |  |
 | Khalid Musaev | 0-1-0 REC | #6567 | |
 | Khalid Taha | 1-4-0, 1NC UFC | #1672 |  |
 | Khamzat Khachukaev | 1-0-0 REC | #815 | |
 | Khanzala Magomadov | 1-0-0 REC | #6913 | |
 | Khasan Dadalov | 5-0-0 REC | #234 | |
 | Khasan Magomedsharipov | 4-0-0 REC | #793 | |
 | Khaseyn Shaykhaev | 1-0-0 REC | #5379 | |
 | Khaskil Amirkhanov | 0-1-0 REC | #7548 | |
| Khetag Morgoev | 1-0-0 REC | #3260 | |
 | Khusein Askhabov | 0-1-0 UFC | #5464 | |
 | Kim Tinghaugen | 0-1-0 REC | #7203 |  |
 | Kisa Miyake | 0-1-0 REC | #5908 |  |
 | Kleber Koike | 2-4-0 REC | #1897 | |
 | Koji Oishi | 0-2-0 UFC | #5245 | |
 | Koji Takeda | 3-2-0 REC | #506 | |
 | Konmon Deh | 0-2-0 REC | #5018 |  |
 | Konstantin Podoynitsyn | 0-1-0 REC | #6318 | |