Caspe is a municipality in the province of Zaragoza, part of the autonomous community of Aragon, in Spain, seat of the comarca of Bajo Aragón-Caspe. As of 2018 it had a population of 9,525 inhabitants and its municipality, of 503.33 km2, is the fourth largest in Aragon.

Joaquín Ascaso Budría was an Aragonese anarcho-syndicalist and President of the Regional Defence Council of Aragon between 1936 and 1937.