Co-Cathedral of Saint-Antoine-de-Padoue

The Co-Cathedral of Saint-Antoine-de-Padoue is a co-cathedral in Longueuil, Quebec, Canada, on Montreal's south shore. It is located on the corner of Rue Saint-Charles and Chemin Chambly in the Borough of Le Vieux-Longueuil. It is dedicated to St. Anthony of Padua. The cathedral houses the remains of the Blessed Marie-Rose Durocher, the foundress of the Sisters of the Holy Names of Jesus and Mary.

Its episcopal region is Longueuil-Nord. Lionel Gendron, the bishop, has a cathedra sculpted in walnut. Before the reign of Bernard Hubert, it was simply a parish church.