| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 541 | Kolgrim | Norse | Son of Hrolf. | M | |
| 542 | Koll | Norse | Dark. | M | |
| 543 | Kolli | Norse | Dark. | M | |
| 544 | Kollsvein | Norse | Young. | M | |
| 545 | Kort | Norse | Short. | M | |
| 546 | Kotkel | Norse | A sorcerer. | M | |
| 547 | Kriemhild | Norse | Wife of Siegfried. | F | |
| 548 | Kriemhilda | Norse | Wife of Siegfried. | F | |
| 549 | Kriemhilde | Norse | Wife of Siegfried. | F | |
| 550 | Krossbyr | Norse | Dwells at the shrine of the cross. | M | |
| 551 | Kuanbyr | Norse | From the woman's estate. | M | |
| 552 | Kylan | Norse | Son of Kara. | M | |
| 553 | Lagmann | Norse | Lawyer. | M | |
| 554 | Lambi | Norse | Son of Thorbjorn the Feeble. | M | |
| 555 | Lamond | Norse | Lawyer. | M | |
| 556 | Lamont | Norse | Lawyer. | M | |
| 557 | Lang | Norse | Tall. | M | |
| 558 | Leidolf | Norse | Wolf descendant. | M | |
| 559 | Leif | Norse | Descendant. | M | |
| 560 | Lene | Norse | Distinguished. | F | |