Torre di Santa Maria (Lombard: La Tur) is a comune (municipality) in the Province of Sondrio in the Italian region Lombardy, located about 100 kilometres (62 mi) northeast of Milan and about 8 kilometres (5 mi) north of Sondrio. As of 31 December 2004, it had a population of 884 and an area of 45.5 square kilometres (17.6 sq mi).

The municipality of Torre di Santa Maria contains the frazioni (subdivisions, mainly villages and hamlets) Prato, Sant'Anna, and Tornadù.

Torre di Santa Maria borders the following municipalities: Berbenno di Valtellina, Buglio in Monte, Caspoggio, Castione Andevenno, Chiesa in Valmalenco, Montagna in Valtellina, Postalesio, Sondrio, Spriana.