San Bellino is a comune (municipality) in the Province of Rovigo in the Italian region Veneto, located about 73 kilometres (45 mi) southwest of Venice and about 15 kilometres (9 mi) west of Rovigo.

Shares with Castelguglielmo, to being the home of the second largest solar park in Italy: the 70 MWp San Bellino Photovoltaic Power Plant.

The municipality of San Bellino contains the frazioni (subdivisions, mainly villages and hamlets) Borgo di Mezzo, Borgo Due Spade, Borgo Vespara, Ca'moro-Dona, Ca'Peretto, Case Nuove, Passarara, Presciane and Treponti.

San Bellino borders the following municipalities: Castelguglielmo, Fratta Polesine, Lendinara and Pincara.

As of 31 December 2004, it had a population of 1,198 and an area of 15.8 square kilometres (6.1 sq mi).