| Competition: | Campeonato Paulista – Série A1 |
| Season: | 1980 |
| Winners: | São Paulo |
| Relegated: | XV de Piracicaba |
| Continentalcup1: | Taça de Ouro |
| Continentalcup1 Qualifiers: | São Paulo Santos Ponte Preta Corinthians Portuguesa Inter de Limeira |
| Continentalcup2: | Taça de Prata |
| Continentalcup2 Qualifiers: | Guarani Botafogo Juventus São Bento Comercial Ferroviária América Palmeiras |
| League Topscorer: | Edmar (Taubaté) – 17 goals |
| Biggest Home Win: | Ferroviária 6-0 Noroeste (June 8, 1980) Botafogo 6-0 América (October 26, 1980) |
| Biggest Away Win: | Inter de Limeira 1-5 Ponte Preta (June 8, 1980) |
| Highest Scoring: | Guarani 6-3 XV de Jaú (July 13, 1980) |
| Matches: | 394 |
| Total Goals: | 876 |
| Prevseason: | 1979 |
| Nextseason: | 1981 |
The 1980 Campeonato Paulista da Primeira Divisão de Futebol Profissional[1] was the 79th season of São Paulo's top professional football league. São Paulo won the championship for the 12th time. (Taubaté's Edmar was the top scorer, with 17 goals. XV de Piracicaba was relegated.[2]
The championship would be divided into two rounds - in each round, the teams played against each other once, and the four best teams qualified to the Semifinals, with their winners qualifying to the Finals. The winners of each round qualified to the Championship Finals.
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Like in the previous year, the team with the fewest points would be relegated and the team with the second-fewest points would go to a playoff against the runner-up of the Second Level. as such, XV de Piracicaba was relegated and Francana had to dispute a playoff in neutral ground against Catanduvense.[3] [4] [5]
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