Rolf Bernt Thorsen (born 22 February 1961) is a Norwegian former competition rower, world champion and Olympic medalist.
He received a silver medal in quadruple sculls at the 1988 Summer Olympics in Seoul, together with Alf Hansen, Vetle Vinje, and Lars Bjønness. He also received a silver medal in quadruple sculls at the 1992 Summer Olympics in Barcelona, together with Kjetil Undset, Per Sætersdal, and Lars Bjønness. Thorsen is three times world champion in double sculls. In 1982 together with Alf Hansen, in 1989 with Lars Bjønness, and again in 1994 with Lars Bjønness.
Thorsen has been president for the Norwegian Rowing Federation since 2000, and also a board member of Særforbundenes Fellesorganisasjon. Professionally he is a managing director of NCC Property Development, a major commercial property developer across the Nordics.