Borja is a town and municipality in the province of Zaragoza, in the autonomous community of Aragon, northeastern Spain. It lies in the Ebro valley region of Aragon, within Zaragoza province.
As of 2014, the municipality had a population of 4,931. It is a small Spanish town, and its name is shared with the wider comarca (county) of Campo de Borja, known for its wine production.