Saint-Jean-de-Maurienne Cathedral is a church in Saint-Jean-de-Maurienne, Savoie, that is one of two co-cathedrals of the Roman Catholic Archdiocese of Chambéry–Saint-Jean-de-Maurienne–Tarentaise.
It is dedicated to John the Baptist.
It was built in the 6th century and rebuilt in the 11th.
It holds the remains of the first three counts of the House of Savoy: Humbert I, Amadeus I and Boniface.
This article on a Roman Catholic cathedral in France is a stub.