Contamina is a municipality located in the province of Zaragoza, Aragón, Spain to the west of the Sierra de Padros, in the upper valley of the river Jalón, a tributary of the Ebro. According to the 2008 census (Instituto Nacional de Estadística), the municipality has a population of 42 inhabitants. In 1930 the population was 252. The 16th-century parish church is dedicated to St Bartholomew and is constructed in the baroque style.