Klasen

Klasen is a surname of German origin. It is a patronymic name derived from the given name Klaus, the German form of Nikolaus. The suffix -en is a common Germanic ending used in patronymic surnames, yielding the sense of “the family of Klaus” or “descendants of Klaus.”

Variants include Klausen, Klaassen, Klaasen, Claassen, and Claasen. Spelling variations often reflect regional pronunciation and historical orthography, especially in northern Germany and among Dutch-speaking populations.

Geographic distribution: The surname is most common in German-speaking regions, with notable presence in northern Germany, and in the Netherlands and Denmark. Through migration, Klasen appears in other countries, including North America and parts of South America, where it may be found among descendants of emigrants from Germany and the Low Countries.

Genealogical notes: Klasen is frequently connected with its variants in records, and researchers may search related forms such as Klausen, Klaassen, and Claassen when tracing family history.

See also: Klausen.