| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 441 | Kenyon | Gaelic | Blond. | M | |
| 442 | Keondre | Gaelic | Ancient. | M | |
| 443 | Kermichaef | Gaelic | From Michael's fortress. | M | |
| 444 | Kermichil | Gaelic | From Michael's fortress. | M | |
| 445 | Kermit | Gaelic | Free. | M | |
| 446 | Kern | Gaelic | Little dark. | M | |
| 447 | Kerr | Gaelic | Spear. | M | |
| 448 | Kerry | Gaelic | Dusky; dark. Kerry county in Ireland. Surname. | M | |
| 449 | Kerwen | Gaelic | Little black one. | M | |
| 450 | Kerwin | Gaelic | Little black one. | M | |
| 451 | Kerwyn | Gaelic | Little black one. | M | |
| 452 | Kevin | Gaelic | Attractive. | M | |
| 453 | Kevyn | Gaelic | Attractive. | M | |
| 454 | Key | Gaelic | Son of Aidan. | M | |
| 455 | Kian | Gaelic | ancient. | M | |
| 456 | Kieran | Gaelic | Black. | M | |
| 457 | Kieron | Gaelic | Dusky; dark-haired. | M | |
| 458 | Kile | Gaelic | A place-name referring to the narrows; a wood or a church. | M | |
| 459 | Kiley | Gaelic | A place-name referring to the narrows; a wood or a church. | M | |
| 460 | Kinnard | Gaelic | From the high hill. | M | |