Jaulín is a municipality in the province of Zaragoza, in the autonomous community of Aragon, Spain. It is located within the comarca of Campo de Cariñena, a district in the Ebro valley known for its wine production.
According to the 2004 census by the Instituto Nacional de Estadística (INE), the municipality had a population of 307 inhabitants. Like many small municipalities in rural Aragon, Jaulín has a low population density and a settlement pattern centred on its main village core.
The surrounding area is characterised by an arid landscape typical of the Ebro basin, with agriculture forming the main economic activity. The municipality lies within the Campo de Cariñena wine region, one of Spain's denominaciones de origen.