| Knute | Man | Scandinavian Names |
| Krista | Woman | Scandinavian Names |
| Krister | Man | Scandinavian Names |
| Kristian | Man | Scandinavian Names |
| Kristine | Woman | Scandinavian Names |
| Kristjana | Woman | Scandinavian Names |
| Kristoff | Man | Scandinavian Names |
| Kristoffer | Man | Scandinavian Names |
| Langer | Man | Scandinavian Names |
| Lars | Man | Scandinavian Names |
| Larson | Unisex | Scandinavian Names |
| Leif | Man | Scandinavian Names |
| Leiv | Man | Scandinavian Names |
| Lilja | Woman | Scandinavian Names |
| Linnea | Woman | Scandinavian Names |
| Linux | Unisex | Scandinavian Names |
| Lis | Woman | Scandinavian Names |
| Liv | Woman | Scandinavian Names |
| Loa | Woman | Scandinavian Names |
| Loki | Man | Scandinavian Names |