Ralph Biasi (11 October 1947 – 5 August 2017) was a Brazilian civil engineer who was elected the youngest mayor of the city of Americana, São Paulo, in the 1970s.

[3] Ralph Biasi was mayor of Americana, São Paulo, from 1973 to 1977 as a member of the Brazilian Democratic Movement (MDB: Movimento Democrático Brasileiro).

[4] Biasi implemented most of the major works in the city plan including the second viaduct, the urban road terminal and improvements to the Feira Industrial de Americana (FIDAM) as a large venue for business events and exhibitions.

[5] In 1975 he invited the Portuguese sculptor Figueiredo Sobral to create a sculpture for the Americana city entrance.

[7] In 2012 Americana councilman Oswaldo Nogueira (DEM) proposed renaming the Viaduto Centenário after Biasi.

[4] From 1980 Biasi was a member of the Brazilian Democratic Movement Party (PMDB: Partido do Movimento Democrático Brasileiro).