Knut Markhus (7 November 1878 – 7 August 1963) was a Norwegian educator and politician.
He edited the newspaper Haugesunds Avis from 1911 to 1913.
In 1913 he founded the folk high school Sunnhordland folkehøgskule [no], where he eventually served as headmaster.
He was elected to the Storting from Hordaland for the periods 1922–1930 and 1937–1945, representing the Liberal Party.
This article about a Norwegian politician born in the 1870s is a stub.