Ariño is a municipality in the province of Teruel, in the autonomous community of Aragon, Spain. It is located in the comarca of Andorra-Sierra de Arcos, in the north-eastern part of the province, near the border with the province of Zaragoza.
According to the 2004 census (INE), the municipality had a population of 898 inhabitants. The town lies in a predominantly rural area of inland Aragon, and its economy has traditionally been based on agriculture and, more recently, on mining and energy production in the surrounding region.
José Antonio Jiménez Comín, a former leader of the ELN (National Liberation Army), was born in Ariño and died in 1970 in Colombia.