Contamina is a municipality in the province of Zaragoza, in the autonomous community of Aragón, Spain. It lies to the west of the Sierra de Padros, in the upper valley of the river Jalón, a tributary of the Ebro.
The municipality is small and has experienced a marked decline in population over recent decades: it recorded 252 inhabitants in 1930, falling to 42 at the 2008 census.
Its most notable landmark is the 16th-century parish church dedicated to St Bartholomew, built in the baroque style. The church contains a notable 16th-century altar depicting the life of Saint Bartholomew in eight panels.