Runners-up were Atlético Paranaense, which led the competition for 11 weeks and lost the title in the penultimate round.
For the second consecutive season, the tournament was played in a double round-robin system.
The team with most points at the end of the season will be declared champion.
The bottom four teams will be relegated and will play in the Campeonato Brasileiro Série B in the 2005 season.
The Série A will serve as a qualifier to CONMEBOL's 2005 Copa Libertadores.