| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 521 | Kelsig | Norse | From the ship's island. | M | |
| 522 | Kerr | Norse | From the marsh. | M | |
| 523 | Ketil | Norse | Son of Thori. | M | |
| 524 | Kiarr | Norse | From the marsh. | M | |
| 525 | Kiollsig | Norse | From the ship's island. | M | |
| 526 | Kirby | Norse | Church farm. Church village. | F | |
| 527 | Kirby | Norse | From the church farm/village. | M | |
| 528 | Kirk | Norse | Church. Dwells at the church. Famous Bearer: American actor Kirk Douglas. | M | |
| 529 | Kirkjabyr | Norse | From the church village. | M | |
| 530 | Kirsten | Norse | Christian. | F | |
| 531 | Kjarr | Norse | Son of Olaf the Peacock. | M | |
| 532 | Kjartan | Norse | Son of Olaf the Peacock. | M | |
| 533 | Kleng | Norse | Has claws. | M | |
| 534 | Knud | Norse | Kind. | M | |
| 535 | Knut | Norse | Knot. | M | |
| 536 | Knutr | Norse | Knot. | M | |
| 537 | Kodran | Norse | Father of Thjodgerd. | M | |
| 538 | Kol | Norse | Dark. | M | |
| 539 | Kolbein | Norse | Son of Sigmund of Vestfold. | M | |
| 540 | Kolbyr | Norse | From the dark settlement. | M | |