Gianfranco Bianchin (6 February 1947 – 1 August 1970) was an Italian professional road cyclist. Bianchin died at the age of 23, drowning in the Adriatic Sea in only his second season as a professional. He won the 1970 Giro di Toscana and placed second in the Giro di Campania the same year and the Coppa Sabatini the previous year. He also competed in the 1969 and 1970 Giro d'Italia.

The Trofeo Gianfranco Bianchin race is named after him, which has been organized since 1970 in Ponzano Veneto.