Hockey Club Klein Zwitserland, commonly known as Klein Zwitserland, is a Dutch professional field hockey club based in The Hague, South Holland.
The women and men's first teams compete in the hoofdklasse, the highest league of Dutch field hockey.
Founded on 20 September 1908, the club was incredibly successful during the 1970s, winning 8 national titles in a row. The first men's team played continuously on the highest level of Dutch hockey from 1974 until 2007. After promoting twice in a row they have been back in the hoofdklasse since 2018.