Variant of Karen, from Greek 'Aikaterine' meaning pure.
Karyn is a stylized variant of Karen, itself a Scandinavian form of the Greek name Aikaterine — the progenitor of Catherine, Katherine, and a vast international family of names. The etymology of Aikaterine is genuinely contested: some scholars connect it to the Greek "katharos," meaning pure or unsullied, while others trace it to the name of the Egyptian goddess Hecate, goddess of magic and crossroads. The pure/unsullied reading eventually dominated in Christian tradition, as Saint Catherine of Alexandria — the brilliant philosopher martyr of the fourth century — became one of the most venerated saints of the medieval church.
Karen entered English usage as a borrowing from Danish and Norwegian, where it had been a common given name since the Middle Ages. Its American peak came in the 1950s and 1960s, when it ranked among the top five girls' names for nearly a decade — part of a broader Scandinavian-American naming fashion that also elevated names like Linda, Sandra, and Donna. The spelling variant Karyn emerged as parents sought to distinguish their daughters from the many Karens in every classroom, a practice of phonetic individualization that was especially popular from the 1960s through the 1980s.
In the early twenty-first century, Karen became the subject of a widespread internet meme depicting an entitled, demanding woman — an unfair cultural burden placed on a generation of women who simply bore a name that happened to be fashionable when they were born. The spelling Karyn has, to some degree, sidestepped that association, retaining the name's Scandinavian elegance and its connection to Saint Catherine's tradition of fierce intellectual courage.