Colorina is a comune (municipality) in the Province of Sondrio in the Italian region Lombardy, located about northeast of Milan and about west of Sondrio. As of 31 December 2004, it had a population of 1,468 and an area of .
The municipality of Colorina contains the frazioni (subdivisions, mainly villages and hamlets) Valle, Piona, and Selvetta.
Colorina borders the following municipalities: Berbenno di Valtellina, Buglio in Monte, Forcola, Fusine.