Stefan Simonsson (born 5 January 1960, in Hyltebruk), is a former professional tennis player from Sweden. He enjoyed most of his tennis success while playing singles. During his career he won 2 doubles titles. He achieved a career-high singles ranking of World No. 49 in 1983 and a career-high doubles ranking of World No. 88 in 1984. He´s the brother of Hans Simonsson. After his career, he coached two top 10 players on the ATP ranking, Magnus Gustavsson and Magnus Larsson.