Claassen Name Origin and Family Crest

Behind the Claassen surname stands Glassen, a Swedish name that clerks and families wrote in more than one way. In origin, the name means “The son of Clas, a pet form of Nicholas (people, victory)”. Records show Claassen as one of the forms Glassen took over time. Regional accents shaped spellings long before dictionaries fixed them. Other spellings include Clasen.

Claassen ranked 19,275 in the 2010 US Census, with 1,406 people answering to the name.

Arms linked to Glassen and its spellings were granted to individual families; our heraldry team traces which line they belonged to. Want more than a summary? See the Claassen family name pack.