Monastier di Treviso is a comune (municipality) in the Province of Treviso in the Italian region Veneto, located about northeast of Venice and about east of Treviso. As of 31 December 2004, it had a population of 3,732 and an area of .
Monastier di Treviso borders the following municipalities: Fossalta di Piave, Meolo, Roncade, San Biagio di Callalta, Zenson di Piave.