San Martino di Lupari () is a comune (municipality) in the Province of Padua in the Italian region Veneto, located about northwest of Venice and about north of Padua.
San Martino di Lupari borders the following municipalities: Castelfranco Veneto, Castello di Godego, Galliera Veneta, Loreggia, Loria, Rossano Veneto, Santa Giustina in Colle, Tombolo, Villa del Conte.
The town is home to a futsal team, the Luparense.