Frits Kiggen (born 10 September 1955)[1] is a retired Dutch sidecarcross passenger and the 1981 World Champion in the sport, together with his driver Ton van Heugten.

Kiggen took out the 1975 IMBA European sidecarcross championship, an amateur competition, on the side of Jan Nouwens.

[4] His racing partner of many years, Ton van Heugten, died on 27 March 2008 of a heart attack, aged 62, in his home town of Amersfoort.

Kiggen continued to race with Van Heugten until 1986, achieving four more top-three finishes in the World Championship.

Kiggen also raced with other drivers in this time and finished his World Championship career on the side of Jan Bakens in 1988.