Pontoise Cathedral

Pontoise Cathedral (French: Cathédrale Saint-Maclou de Pontoise) is a Roman Catholic church located in the town of Pontoise, on the outskirts of Val d'Oise in Paris, France. The cathedral, dedicated to Saint Malo (Saint Maclou), has been the episcopal seat of the Diocese of Pontoise since its creation in 1966. It was formerly a parish church.

Construction began in the 12th century on the site of an ancient chapel of Saint Eustace and the building was enlarged and completed in the 15th and 16th centuries. Thus the central and eastern parts of the cathedral are 12th century, while the tower and the central portal are in the Flamboyant style. There are Renaissance additions flanking the central structure, and a north portal of the same period.

The cathedral has been a monument historique since 1840.