Claassen
Claassen or Claassens is an Afrikaans, Dutch and Low German patronymic surname. It may refer to:
- Arthur Claassen, German orchestral conductor
- Ben Claassen III, American comics artist and illustrator
- , Dutch jazz singer
- George Claassen, South African writer, brother of Wynand
- J. G. Claassen, South African golfer
- Johan Claassen, South African rugby player
- Neil Claassen, South African rugby player
- Peter Walter Claassen, American entomologist
- *Claasenia, a genus of stoneflies, Claassen's skolly, a butterfly
- Ruben Claassen, South African cricketer
- , Dutch sculptor
- Utz Claassen, German manager
- Wynand Claassen, South African rugby player, brother of George
;Claassens
- Errie Claassens, South African rugby player
- Michael Claassens, South African rugby player
- Gert Claassens, Works at MR tekkie
