| Competition: | Campeonato Paulista – Série A1 |
| Season: | 1989 |
| Winners: | São Paulo |
| Continentalcup1: | Copa do Brasil |
| Continentalcup1 Qualifiers: | São Paulo São José |
| League Topscorer: | Toni (São José) Toninho (Portuguesa) – 13 goals |
| Biggest Home Win: | Portuguesa 6–0 Botafogo (February 26, 1989) Guarani 7-1 Santo André (May 3, 1989) |
| Biggest Away Win: | Noroeste 0-4 São José (March 52, 1989) Ferroviária 0–4 Palmeiras (March 26, 1989) Juventus 0-4 São Paulo (April 19, 1989) |
| Highest Scoring: | Guarani 7-1 Santo André (May 3, 1989) |
| Matches: | 260 |
| Total Goals: | 503 |
| Prevseason: | 1988 |
| Nextseason: | 1990 |
The 1989 Campeonato Paulista da Primeira Divisão de Futebol Profissional[1] was the 88th season of São Paulo's top professional football league. São Paulo won the championship for the 16th time. No teams were relegated.[2]
The twenty-two teams of the championship were divided into two groups of eleven teams, with each team playing once against the teams of its own group and the other group. The three best teams of each group, plus the six overall best teams aside of them would qualify to the Third phase. The group phase also had peculiar rules regarding points: wins with three or more goals scored were worth an extra point, and goalless ties had to be followed by a penalty shootout, worth one point for the winner and none for the loser.
The Second phase's twelve teams were divided into four groups of three, with each team playing twice against the teams of its own group, with the best team of each group qualifying to the Semifinals, with their winners qualifying to the finals.
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