Claassen

Claassen or Claassens is an Afrikaans, Dutch and Low German patronymic surname. It may refer to:


 * Arthur Claassen (1859–1920), German orchestral conductor
 * Ben Claassen III (born 1977), American comics artist and illustrator
 * (born 1969), Dutch jazz singer
 * George Claassen (born ca. 1950), South African writer, brother of Wynand
 * J. G. Claassen (born 1991), South African golfer
 * Johan Claassen (1929–2019), South African rugby player
 * Neil Claassen (born 1992), South African rugby player
 * Peter Walter Claassen (1886–1937), American entomologist
 * Claasenia, a genus of stoneflies, Claassen's skolly, a butterfly
 * René Claassen (born 1971), Dutch politician
 * Ruben Claassen (born 1993), South African cricketer
 * (born 1964), Dutch sculptor
 * Utz Claassen (born 1963), German manager
 * Wynand Claassen (born 1951), South African rugby player, brother of George
 * Claassens
 * Errie Claassens (born 1981), South African rugby player
 * Michael Claassens (born 1982), South African rugby player