Scandinavian and German form of Katherine, from Greek 'katharos' meaning 'pure'.
Karin is the Scandinavian and Germanic form of Katherine, tracing its lineage through Old French Caterine back to the Greek Aikaterine — a name whose origin scholars have debated for centuries, connecting it variously to the goddess Hecate, the Greek katharos (pure), or simply the name of an early martyr whose fame overwhelmed her etymology. Karin took hold across Sweden, Norway, Denmark, and parts of Germany as the everyday, unadorned version of a name that in English acquired elaborate variations: Catherine, Kathryn, Karen, Katarina.
In Swedish cultural history, the name is inseparable from Karin Larsson, wife of the Arts and Crafts painter Carl Larsson, whose collaborative vision shaped the Sundborn farmhouse that became one of Sweden's most beloved domestic images. Her textile work and interior design — colorful, handcrafted, joyfully functional — were as formative as her husband's paintings, and her name became associated with a particular Swedish ideal of cultivated simplicity. Karin Boye, the early 20th-century Swedish poet and novelist, added another dimension: intellectual gravity, modernist courage, and lyric precision.
Karin arrived in English-speaking countries in the 20th century, sometimes distinguished from Karen by parents who wanted the slightly more continental spelling. It peaked in Scandinavian countries in the mid-20th century and remains in steady, understated use — the kind of name that never shouts, wears well across decades, and carries an almost architectural cleanness of form.