The Iglesia de Santiago is a Romanesque church in the center of Sigüenza, in the autonomous community of Castilla-La Mancha, Spain.
Located on Calle Mayor of the town, the façade recalls a Roman temple. It served as a parish church. The church was erected by Bishop Don Cerebruno. It consists of a single nave. It suffered damage during the Spanish Civil War and is still undergoing restoration. The church was once attached to a Clarissan order Monastery, abandoned in the 1940s. The entrance portal has a bust of St James the apostle, and traces of the coat of arms of the 16th-century Bishop Fadrique de Portugal.
Address 31 Calle Mayor, Sigüenza 19250, Spain
Coordinates 41°3'58.349" N -2°38'25.327" E