Silvio José Pereira (born May 4, 1961) is a sociologist and co-founder of the Brazilian Workers Party.
Born in Osasco, São Paulo, he was a key figure in the mensalão scandal and resigned from his post of secretary general of the party on June 4, 2005.Under Luiz Inácio Lula da Silva's administration, Pereira was responsible for the allocation of the 32,000 commissioned positions.