Combattants Etats-Unis
| 1451 |  | Katherine Corogenes | 0-2-0 REC | #6566 |  |
| 1452 |  | Kathryn Paprocki | 0-1-0 REC | #7152 | |
| 1453 |  | Katie Perez | 0-3-0 REC | #3518 | |
| 1454 |  | Katlyn Cerminara | 11-6-0 UFC | #508 | |
| 1455 |  | Kay Hansen | 1-3-0 UFC | #3204 | |
| 1456 |  | Kayara Hartfield | 1-0-0 REC | #1277 | |
| 1457 |  | Kayla Harrison | 3-0-0 UFC | #9 | |
| 1458 |  | Kayla Yontef | 1-0-0 REC | #5646 | |
| 1459 |  | Kaytlin Neil | 2-1-0 REC | #4174 | |
| 1460 |  | Keegan Witbeck | 0-1-0 REC | #7482 | |
| 1461 |  | Kegan Agnew | 0-1-0 REC | #7120 | |
| 1462 |  | Kegan Gennrich | 2-2-0 REC | #3786 | |
| 1463 |  | Keith Berish | 0-1-0, 1NC UFC | #4733 | |
| 1464 |  | Keith Hackney | 2-2-0 UFC | #2976 | |
| 1465 |  | Keith Jardine | 6-7-0 UFC | #1682 | |
| 1466 |  | Keith Mielke | 0-1-0 UFC | #6476 | |
| 1467 |  | Keith Rockel | 1-1-0 UFC | #5399 | |
| 1468 |  | Keith Wisniewski | 0-4-0 UFC | #4076 | |
| 1469 |  | Kellie Marin | 0-1-0 REC | #5794 | |
| 1470 |  | Kelly Dullanty | 0-1-0 UFC | #5797 | |
| 1471 |  | Kelly Faszholz | 0-2-0 UFC | #5158 | |
| 1472 |  | Kelly McGill-Velasco | 0-1-0 REC | #5812 | |
| 1473 |  | Kelsey DeSantis | 0-1-0 REC | #6070 | |
| 1474 |  | Kelvin Gastelum | 14-11-0, 1NC UFC | #231 | |
| 1475 |  | Kelvin Rayford | 0-1-0 REC | #6812 | |