Campeonato Paulista Série A4 (previous known as Campeonato Paulista Segunda Divisão) is the fourth tier of the professional state football league in the Brazilian state of São Paulo.

It is run by the São Paulo State Football Federation (FPF).

2025 Série A4 There are all the championship editions, officially recognized by Federação Paulista de Futebol.

[1][2] Amateur Era (1928-1931) Professional Era (1960-)