Sigurd Clausen Haanes (1 August 1913 – 3 April 1943) was a Norwegian ski jumper and pilot.
He was born in Kristiania as the son of Thorgny Haanes and his wife Hedvig Kristine Clausen, and resided in Vestre Aker.
Following the German invasion of Norway in 1940 he participated in the fighting during the Norwegian Campaign as member of a ski company.
He later travelled to the United Kingdom and enrolled in the Air Force where he became a pilot.
This biographical article relating to Norwegian ski jumping is a stub.