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.
[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.
[1][2] 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.