Kaisa

Kaisa is a Finnish and Estonian feminine name that developed as a vernacular short form of Katariina, the Nordic adaptation of Katherine. Katherine itself traces back through Latin and Greek to an uncertain ancient root, possibly related to the Greek word katharos, meaning pure. Kaisa has been a common given name in Finland for centuries and remains in steady use today. Related forms include Kaisu, another Finnish pet form, as well as the broader Katherine family spanning Katja, Katrina, and Karen across European languages.