Saint-Malo Cathedral is a Catholic Cathedral located in Saint-Malo, Brittany, France. The church was founded in dedication to Saint Vincent of Saragossa and is a national monument of France. It was built in a mix of Romanesque and Gothic styles during the episcopacy of Jean de Châtillon (1146-1163) on the site of an ancient church founded in the 7th century. The cathedral suffered damage during World War II when the steeple toppled onto the Sacred Heart Chapel. An organ which had been built in 1893 by Louis Debierre was destroyed. On 21 May 1972, after 28 years of work, a ceremony was held to celebrate the completion of the restoration. It is a stop on the Tro Breizh, a Catholic pilgrimage that links the towns of the seven founding saints of Brittany.

Saint-Malo is a historic French port in Ille-et-Vilaine, Brittany.