Associazione Calcio Milan, commonly referred to as A.C. Milan or simply Milan, is a professional Italian football club based in Milan, Lombardy, that plays in the Serie A. Milan was founded in 1899 by English lace-maker Herbert Kilpin and businessman Alfred Edwards among others. The club has spent its entire history, with the exception of the 1980–81 and 1982-83 seasons, in the top-flight of Italian football, known as Serie A since 1929.

They are the current Italian football champions, and are the most successful club in world football in terms of international trophies along with Boca Juniors, with 18 officially recognized UEFA and FIFA titles. Milan has won four world titles, more than any other club in the world, having won the Intercontinental Cup three times and the FIFA Club World Cup once. Milan also won the European Cup/Champions League on seven occasions, second only to Real Madrid. They also won the UEFA Super Cup a record five times and the Cup Winners' Cup twice. Milan won every major competition in which it has competed, with the exception of the Europa League. Domestically, with 18 league titles Milan is the joint-second most successful club in Serie A behind Juventus (27 titles), along with local rivals Inter. They have also won the Coppa Italia five times, as well as a record six Supercoppa Italiana triumphs. Furthermore, Milan is the only team to have won the Serie A without losing a game, doing so in 1991-92 during a 58-match unbeaten run.