| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Karen (1) | KAH-ren (Danish), KER-ən (English), KAR-ən (English) | Danish, Norwegian, Icelandic, German, English | ||
| KatrÍN | - | Icelandic | ||
| Klara | KLAH-rah (German, Russian, Polish) | Swedish, Norwegian, Danish, Icelandic, German, Russian, Ukrainian, Polish, Slovene, Croatian | ||
| KristÍN | - | Icelandic | ||
| KristjÁN | - | Icelandic | ||
| Kristjana | - | Icelandic |