2011 Campeonato Brasileiro Série A

The 2011 Campeonato Brasileiro Série A (officially the Brasileirão Petrobras 2011 for sponsorship reasons) was the 55th edition of the Campeonato Brasileiro Série A, the top-level of professional football in Brazil. It began on May 21 and was scheduled to end on December 4. Fluminense comes in as the defending champion having won the 2010 season.