Poids Mi-Lourds Hommes
 | Kalib Starnes | 2-3-0 UFC | #3754 |  |
 | Kaloyan Kolev | #5895 |  | |
 | Kamil Saidov | #2905 |  | |
 | Karl Albrektsson | #3952 |  | |
 | Karl Moore | #3926 |  | |
 | Karl Reed | #6478 |  | |
 | Karlos Vemola | 2-4-0 UFC | #165 |  |
 | Kassoum Kone | #2614 |  | |
 | Kazuo Takahashi | 1-0-0 UFC | #5227 |  |
 | Keith Berish | 0-1-0, 1NC UFC | #5106 | |
 | Keith Hackney | 2-2-0 UFC | #3115 | |
 | Keith Mielke | 0-1-0 UFC | #7159 | |
 | Kenneth Bergh | #7853 |  | |
 | Kevin Christian | 0-2-0 UFC | #2335 |  |
 | Kevin Jackson | 2-2-0 UFC | #3403 | |
 | Kevin Randleman | 4-3-0 UFC | #1284 | |
 | Kevin Tchoupa | 3-1-0 MMA | #1631 |  |
 | Khabib Nabiev | 12-0-0 MMA | #4679 | |
 | Khalid Murtazaliev | 1-0-0 UFC | #3818 | |
 | Khalil Rountree | 10-7-0, 1NC UFC | #118 | |