Massanzago is a comune (municipality) in the Province of Padua in the Italian region Veneto, located about northwest of Venice and about northeast of Padua. As of 31 December 2004, it had a population of 5,163 and an area of .
Massanzago borders the following municipalities: Borgoricco, Camposampiero, Noale, Santa Maria di Sala, Trebaseleghe.