With Giovanni Trapattoni's Juventus club, Tacconi achieved great domestic and international success, as he won two scudetti in 1984 and 1986, the European Cup Winners' Cup in 1984, the 1984 European Super Cup, the European Champion Clubs' Cup in 1985 and the 1985 Intercontinental Cup the same year against Argentinos Juniors on penalties. In 1990 Tacconi and Juventus went on to win a UEFA Cup and a Coppa Italia double; the following season, he was named the team's captain, although Juventus lost out on the 1990 Supercoppa Italiana to Serie A winners Napoli. During this period, Juventus were one of the best teams in the world, and Tacconi was also regarded as one of the top goalkeepers in the world.