is an Italian former football player and manager. At club level, he played as a midfielder for several Italian clubs; he began his career with Pisa, and later played for Como, Juventus, and Internazionale, before retiring with Swiss club St. Gallen. He enjoyed a highly successful career with Juventus, winning five league titles, as well as multiple Coppa Italia titles, and four major UEFA competitions (European Cup, Cup Winner's Cup, UEFA Cup and UEFA Super Cup), becoming one of the first three players ever to win all three major UEFA club competitions, along with Italy and Juventus teammates Antonio Cabrini and Gaetano Scirea.

Tardelli also achieved success with the Italy national team. He represented his nation at three FIFA World Cups (1978, 1982 and 1986), winning the 1982 edition of the tournament. His goal celebration in the 1982 final – where he ran away shaking his fists, tears pouring down his face, screaming \"Gol! Gol!\" as he shook his head wildly – is regarded as one of the most iconic moments in World Cup history. He also took part in UEFA Euro 1980, in which he came fourth on home soil, and was named to the team of the tournament.

Regarded as one of Italy's greatest midfielders, and one of the best players of his generation, Tardelli was an energetic and hard-tackling yet technically skilful two-way midfielder, who was known for his ability to contribute both offensively and defensively. In 2004, Tardelli was named 37th in the UEFA Golden Jubilee Poll; he was inducted into the Italian Football Hall of Fame in 2015.

As a manager, Tardelli initially worked with the Italy U-16 side, and later served as an assistant manager to Cesare Maldini for the U-21 side. He subsequently led several clubs in Italy before serving as head coach of the Italy national under-21 football team, winning the 1997 Mediterranean Games and the 2000 UEFA European Under-21 Championship, before returning to coach at club level. Between 2004 and 2005 he also managed the Egypt national football team, while he served as an assistant manager to Giovanni Trapattoni with the Republic of Ireland national football team between 2008 and 2013.