Haaken Andreas Christensen (16 February 1924 – 9 April 2008) was a Norwegian art historian, art collector and gallerist.
He was born in Kristiania to Arne Christensen and Ingeborg Wiese.Christensen graduated in art history from the University of Oslo in 1955.
He opened his own gallery in Oslo in 1961, Galleri Haaken, which he was running for about forty years.