| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Karsten | KAHR-sten (Low German) | Low German, Danish, Norwegian | ||
| Karthik | - | Tamil, Indian, Telugu, Malayalam | ||
| Karthika | - | Tamil, Indian, Malayalam | ||
| Karthikeyan | - | Tamil, Hinduism | ||
| Kartik | - | Indian, Hindi, Marathi | ||
| Karyna | - | English (Rare) | ||
| Kashi | - | Indian, Hindi | ||
| Kasi | - | Indian, Telugu, Tamil | ||
| Kasih | - | Indonesian, Malay | ||
| Kasimir | KAH-zee-meer | German | ||
| Kasimira | kah-zee-MEE-rah | German (Archaic) | ||
| Kaspar | - | German | ||
| Kasparas | - | Lithuanian | ||
| Kaspars | - | Latvian | ||
| Kasper | KAHS-per (Polish, Swedish), KAHS-pər (Dutch) | Polish, Dutch, Swedish, Norwegian, Danish |