Knut Aarethun

Knut O. Aarethun (born 19 January 1942) is a Norwegian politician for the Labour Party.

From 1964, he worked in the administration of the Lærdal hospital in his native Lærdalsøyri. In 1967, he entered Lærdal municipality council. He was later elected to the county council, first time in 1981. He became deputy county mayor in 1991, and then county mayor in 1995. He lost his post following the 1999 elections. From 2003 to 2007 he served as mayor of Lærdal.