Klaasen

Klaasen is Dutch patronymic surname ("son of Klaas"). Notable people with this name include:


 * Berton Klaasen (born 1990), South African rugby union player
 * Heinrich Klaasen (born 1991), South African cricketer
 * Jelle Klaasen (born 1984), Dutch darts player
 * Lorraine Klaasen (born 1957), South African/Canadian musician, daughter of Thandi Klaasen
 * (born 1958), Dutch bassist known by his pseudonym Luc Ex
 * Raven Klaasen (born 1982), South African tennis player
 * Robert Klaasen (born 1993), Dutch footballer
 * Davy Klaassen (born 1993), Dutch footballer
 * Thandi Klaasen (1931–2017), South African musician, mother of Lorraine Klaasen