Tarzo is a comune (municipality) in the Province of Treviso in the Italian region Veneto, located about 60 kilometres (37 miles) north of Venice and about 35 km (22 mi) north of Treviso. As of 31 December 2004, it had a population of 4,671 and an area of 23.8 square kilometres (9.2 sq mi).

The municipality of Tarzo contains the frazioni (subdivisions, mainly villages and hamlets) Arfanta, Colmaggiore, Corbanese, Fratta, Nogarolo, and Resera.

Tarzo borders the following municipalities: Cison di Valmarino, Refrontolo, Revine Lago, San Pietro di Feletto, Vittorio Veneto.

Demographic evolution