Klaasen
Klaasen is Dutch patronymic surname. Notable people with this name include:
- Berton Klaasen, South African rugby union player
- Heinrich Klaasen, South African cricketer
- Jelle Klaasen, Dutch darts player
- Lorraine Klaasen, South African/Canadian musician, daughter of Thandi Klaasen
- , Dutch bassist known by his pseudonym Luc Ex
- Raven Klaasen, South African tennis player
- Robert Klaasen, Dutch footballer
- Thandi Klaasen, South African musician, mother of Lorraine Klaasen
