San Antonio is a town and municipality in Jujuy Province, in northwestern Argentina. It is one of the province's smaller administrative centres, located in the Andean north of the country.
As a municipality, San Antonio forms part of the local government structure of Jujuy Province, alongside the provincial capital of San Salvador de Jujuy and other towns in the region. Jujuy itself borders Bolivia to the north and the Argentine provinces of Salta and Formosa to the south and east.
Detailed information about the town's population, economy, and attractions is limited; it is best known simply as one of the many small municipalities that make up Jujuy Province.