Haakon Blankenborg (born 8 April 1955) is a Norwegian politician for the Labour Party. He was born in Vågå as a son of sawmill and forest Ola Blankenborg (1909–1989) and housewife Margit Kjeka (1915–1971). After primary school in Vågå he attended secondary school in Vinstra from 1972 to 1975, and worked as a sawmill worker from 1975 to 1976. He had joined the Workers' Youth League and chaired it locally and regionally; from 1981 to 1983 he was a member of the central board. He took a degree in history and political science at the University of Oslo in 1980.