Argañín is a municipality in Spain, located in the province of Zamora within the autonomous community of Castile and León.
It is one of the many small municipalities that make up the Zamora province in the country's northwestern interior. The province of Zamora lies in the wider Castile and León region, an area of the Spanish meseta known for its rural character and historic towns.
As a municipality, Argañín forms a basic unit of local administration in Spain, with its own local government. Beyond its status as a municipality within Zamora and Castile and León, few further details are recorded in the available source material.