San Bellino is a comune (municipality) in the Province of Rovigo in the Italian region Veneto, located about southwest of Venice and about west of Rovigo.
Its Basilica di S. Bellino is a minor basilica by immemorial decree and its parish church in the Roman Catholic Diocese of Adria-Rovigo.
Shares with Castelguglielmo, to being the home of the second largest solar park in Italy: the 70 MW<sub>p</sub> 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 .