Église Sainte-Croix de Saint-Pourçain-sur-Sioule, Classified historical monument and church building in Saint-Pourçain-sur-Sioule, France

The église Sainte-Croix de Saint-Pourçain-sur-Sioule is a classified historic monument and church in the town of Saint-Pourçain-sur-Sioule in the Auvergne region of France. The building combines Romanesque stonework from the early 12th century with a Gothic choir, an ambulatory, and radiating chapels added over the following centuries.

Built in the 12th century as a priory church attached to a now-vanished Benedictine priory, it was enlarged in the 13th century with the rest of the nave, the transept, the choir, the ambulatory and five apsidioles. Only the entrance porch and the two side-aisle walls up to the fourth bay of the nave survive entirely from the 12th century. It was classified as a monument historique in 1875.

The name Sainte-Croix refers to the Holy Cross, and the church began as a priory church attached to a Benedictine priory that has since disappeared. Four bays of a cloister along the south side, dating from the 15th century, survive beside the side aisles.

The church sits in the center of Saint-Pourçain-sur-Sioule and is easy to reach on foot from anywhere in the town. When visiting, it is worth taking time to look at both the interior and the remains of the 15th-century cloister along the southern side of the building.

The 12th-century porch and the first four bays of the side-aisle walls are the only parts of the building that survive entirely from the original Romanesque campaign; the nave, transept, choir, ambulatory and five apsidioles were added in the 13th century. Look for the break in the masonry where the two building phases meet.