The 1990 Campeonato Brasileiro Série A was the 34th edition of the Campeonato Brasileiro Série A.
It was contested by 20 teams, and Corinthians won the championship.
Relegated: Sao Jose and Inter de Limeira.
The tournament will be played in a double round-robin system.
For the determination of the quarterfinalists the 20 Teams is divided into 2 groups.