Göran Bror Benny Andersson (; born 16 December 1946) is a Swedish musician, composer and producer. He was a member of the Swedish music group ABBA (1972–1982), and co-composer of the musicals "Chess", "Kristina från Duvemåla", and "Mamma Mia!". For the 2008 movie version of "Mamma Mia!", he worked also as an executive producer.