Namesakes
Notable Athletes:
1 soccer
(soccer) Klaas-Jan Huntelaar 1983- 
Notable Politicians and Statespeople:
1 politician
Klaas Dijkhoff 1981-
Olympic Medalists:
2 silver
(silver) Klaas-Erik Zwering 2004 swimming - 4x100 m freestyle relay
(silver) Klaas Vermeulen 2012 field hockey