Ronaldo de Assis Moreira (born 21 March 1980 in Porto Alegre), commonly known as Ronaldinho (IPA-pt?ona??d???ubr) or Ronaldinho Ga�cho, is a Brazilian footballer (Association football) who plays for Milan (A.C. Milan) and the Brazilian national team (Brazil national football team). He is widely regarded as one of the most gifted footballers of his generation. He is a free-kick specialist and has exceptional dribbling ability.

Ronaldinho, Portuguese (Portuguese language) for "Little Ronaldo," is known in Brazil by the nickname "Ga�cho," in order to distinguish him from Ronaldo, who was already called "Ronaldinho" in Brazil. Ronaldo simply went by his first name upon his move to Europe, thereby allowing Ronaldinho to drop the "Ga�cho" and remain simply as Ronaldinho.

Prior to his move to Milan, he played for Paris Saint-Germain (Paris Saint-Germain F.C.), and Barcelona (FC Barcelona), with whom he won his first Champions League (2005-06 UEFA Champions League) in 2006 and he won the Ballon dOr in 2005. He became a Spanish citizen in January 2007.