Poids Mi-Lourds Hommes
 | Karlos Vemola | 2-4-0 UFC | #478 |  |
 | Kassoum Kone | 1-0-0 REC | #2300 |  |
 | Kazuo Takahashi | 1-0-0 UFC | #5131 |  |
 | Keith Berish | 0-1-0, 1NC UFC | #4787 |  |
 | Keith Hackney | 2-2-0 UFC | #3004 | |
 | Keith Mielke | 0-1-0 UFC | #6683 | |
 | Kenneth Bergh | #7663 |  | |
 | Kevin Christian | 0-2-0 UFC | #2160 |  |
 | Kevin Jackson | 2-2-0 UFC | #3308 | |
 | Kevin Randleman | 4-3-0 UFC | #1182 | |
 | Kevin Tchoupa | #8126 |  | |
 | Khabib Nabiev | 0-1-0 REC | #4717 |  |
 | Khalid Murtazaliev | 1-0-0 UFC | #3687 | |
 | Khalil Rountree | 10-7-0, 1NC UFC | #114 | |
 | Khuseyn Tatalaev | 0-1-0 REC | #7283 | |
 | Kleber Silva | 2-3-0 REC | #3849 | |
 | Kory Moegenburg | 0-2-0 REC | #5324 | |
 | Kris Rotharmel | 0-1-0 UFC | #7461 | |
 | Krzysztof Glowacki | 1-1-0, 1NC REC | #4542 |  |
 | Krzysztof Soszynski | 6-3-0 UFC | #2176 |  |