Combattants Etats-Unis
| 1401 |  | Kase Tucker | #7427 |  | |
| 1402 |  | Kasey Tanner | 3-1-0 REC | #1393 | |
| 1403 |  | Kassius Kayne | 0-1-0 REC | #7119 | |
| 1404 |  | Katarina Legorreta | 0-1-0 REC | #5796 | |
| 1405 |  | Katherine Corogenes | 0-2-0 REC | #6047 | |
| 1406 |  | Kathryn Paprocki | 0-1-0 REC | #6907 | |
| 1407 |  | Katie Perez | 0-2-0 REC | #4043 | |
| 1408 |  | Katlyn Cerminara | 11-6-0 UFC | #475 | |
| 1409 |  | Kay Hansen | 1-3-0 UFC | #3061 | |
| 1410 |  | Kayla Harrison | 3-0-0 UFC | #8 | |
| 1411 |  | Kayla Yontef | 1-0-0 REC | #5378 | |
| 1412 |  | Kaytlin Neil | 2-1-0 REC | #3796 | |
| 1413 |  | Keegan Witbeck | 0-1-0 REC | #7094 | |
| 1414 |  | Kegan Agnew | 0-1-0 REC | #6542 | |
| 1415 |  | Kegan Gennrich | 2-2-0 REC | #3314 | |
| 1416 |  | Keith Berish | 0-1-0, 1NC UFC | #4495 | |
| 1417 |  | Keith Hackney | 2-2-0 UFC | #2733 | |
| 1418 |  | Keith Jardine | 6-7-0 UFC | #1623 | |
| 1419 |  | Keith Mielke | 0-1-0 UFC | #5918 | |
| 1420 |  | Keith Rockel | 1-1-0 UFC | #5230 | |
| 1421 |  | Keith Wisniewski | 0-4-0 UFC | #3854 | |
| 1422 |  | Kellie Marin | 0-1-0 REC | #4944 | |
| 1423 |  | Kelly Dullanty | 0-1-0 UFC | #5770 | |
| 1424 |  | Kelly Faszholz | 0-2-0 UFC | #4722 | |
| 1425 |  | Kelly McGill-Velasco | 0-1-0 REC | #5083 | |