Sérgio Luís Donizetti (born 7 September 1964 in Campinas, Brazil), best known as João Paulo, is a Brazilian former association footballer, who played as a striker.

João Paulo joined Italian club Bari in 1989, and formed a formidable striking partnership with Pietro Maiellaro and later with Romanian Florin Raducioiu.

But in their third match at home to Sampdoria, in torrential rain, his leg was broken by defender Marco Lanna in a tackle along the sidelines which ended his season.

It took him an entire year to recover and he stayed on with Bari after its relegation to Serie B for two more seasons until 1994.

João Paulo also played for the Brazil national team, scoring twice (one goal apiece against Uruguay, and in the notorious match against Argentina) in the Copa América in 1991.