Associazione Calcio Milan, commonly referred to by the abbreviation AC Milan or simply Milan, is an Italian professional football club based in Milan, Lombardy. The club was founded in 1899 and has since spent most of its history in the top flight of Italian football.

In European and World competitions AC Milan have won 18 officially recognised international titles, more than any other club in the world. Boca Junior with 17 are next in terms of official international titles The club have won what is today known as the UEFA Champions League on seven occasions; only Real Madrid have won it more times (9). As far as Italian competitions are concerned, AC Milan is the second most successful club with 17 league titles; only Juventus have won more (27). AC Milan have won Intercontinental Cup/Club World Cup four times, more than any other team in the world.

Other important titles which Milan have won includes the European Super Cup five times, the Cup Winners' Cup twice, however they have never reached the UEFA Cup final (only two semifinals). In Italy, the Coppa Italia five times as well as five Italian Super Cups. AC Milan is also one of the G-14’s founding members, a group that represents eighteen of the largest and most prestigious European football clubs.

Their home games are played at San Siro, also known as the Stadio Giuseppe Meazza. The ground, which is shared with rivals Internazionale, is the largest in Italian football, with total capacity of 82,955.