La Iglesuela del Cid is a municipality in the province of Teruel, in the Aragon region of Spain. It is located in the eastern part of the province, near the border with the Valencian Community.
According to the 2004 census (INE), the municipality had a population of 501 inhabitants. The town is known for its well-preserved historic centre, which retains elements of its medieval and early modern past, including stone houses and narrow streets characteristic of the region.
Its name references El Cid, the Castilian nobleman and military leader Rodrigo Díaz de Vivar, reflecting the area's association with the frontier zone between Christian and Muslim territories during the Middle Ages.