Bengt Harald Lundsten, (born 26 February 1928), is a Finnish architect and professor.
[1] Lundsten was born in Turku on 26 February 1928.
He was active at Viljo Revell's architect bureau 1952–1959 and partner in his agency in Toronto 1959–1961.
He started his own architectural practice in Helsinki 1962 and was professor in building theory at the Helsinki University of Technology for 1969–1994.
He conducted research on, among other things ecological building materials.