Stefan Marini (born 23 June 1965 in Luzern, Switzerland) is a retired Swiss football defender and later manager. He debuted for FC Luzern on 30 April 1983 and retired from FC Aarau on 27 March 1994. Marini started his managerial career with FC Thun on 1 July 1994. His preferred formation in football is the 4-4-2 formation.