In 1990, he joined Torino, where he won the Mitropa Cup over Pisa and finished in fifth-place in the league during the 1990–91 season. The following year, he led Torino to a historic UEFA Cup final during the 1991–92 season, lost on aggregate to AFC Ajax. After Torino were disallowed a penalty, Mondonico famously lifted up a chair into the air in a sign of protest against the referee. In the 1992–93 season, he won the 1993 Coppa Italia Final against Roma.