Collégiale Saint-Jean, Collegiate church in Pézenas, France

Collégiale Saint-Jean is a church building in Pézenas with three naves, a semicircular apse, rectangular side chapels, and a dome covering the transept crossing. The interior features an organ built in 1758 and polychrome marble work completed between 1746 and 1754.

The original church was a fortified Romanesque building erected by the Templars, which from 1314 housed the parish cult previously held outside the walls. In 1733 the collapse of its bell tower led to a complete reconstruction. The Avignon architect Jean-Baptiste Franque completed the work in 1746, following a design inspired by Jean Giral of Montpellier.

The church is dedicated to both John the Baptist and John the Evangelist, a double dedication reflected in its name. Its exceptional organ, built in 1758 by Jean François l'Epine and restored by Aristide Cavaillé-Coll in 1853, is said to be entirely similar to the great organ of Saint-Roch in Paris.

The church stands in the centre of Pézenas, in the Hérault department. Visitors enter through the body of the church, where the three bays, the transept crossing under its dome and the semicircular apse can be followed on foot. The polychrome marble decoration is best seen in the north chapel dedicated to the Virgin Mary. The building is listed as a monument historique.

The organ, built in 1758 by Jean François l'Epine and restored in 1853 by Aristide Cavaillé-Coll, is said to be in every respect similar to the great organ of Saint-Roch in Paris. Visitors can compare the two instruments' designs.