Iglesia de Santiago Apóstol, Gothic church in Montilla, Spain.

Iglesia de Santiago Apóstol is a 16th-century church with three naves separated by four pointed arches on rectangular pillars, side chapels and a transept raised above the nave line. The central nave has ribbed vaults, the aisles lowered barrel vaults, and an elliptical dome on pendentives rises over the crossing. The tower, of brick in four diminishing sections, stands to the right of the main doorway.

The site held Montilla's main parish from a possible mosque consecrated for Christian worship in 1240, after the town's conquest. The present Gothic-Mudéjar church was built in the 16th century on the initiative of the first Marquis of Priego, who expanded the temple and added chapels. In the 17th and 18th centuries it was transformed toward Andalusian classical Baroque, and 19th- and 20th-century changes gave it its current look. It was declared a Bien de Interés Cultural in 2001.

The tower beside the main door is brick, built by José Vela between 1771 and 1789 to replace an earlier one by Hernán Ruiz II damaged in the Lisbon earthquake. Inside, the chapel of San Juan Bautista keeps a coffered ceiling by Alonso Ramiro from around 1571, and the chapel of the Sagrario, remade for the Alvear family in 1932, has a neo-Mudéjar plaster roof.

The church is situated in the upper section of the town within the grounds of the former castle and serves as the main parish building. Its central location makes it easy to find, and visitors should remember that it functions as an active place of worship.

The Gothic stone font in the Baptism chapel is where, by tradition, Saint Francis Solano was baptised; the chapel's decoration centres on his figure. The chapel of San Juan Bautista keeps a coffered ceiling of octagonal panels made by Alonso Ramiro around 1571, and its altar front is a 1914 neo-Renaissance tilework panel showing the Baptism.