The Roman Catholic Diocese of Saint-Dié, in Latin Dioecesis Sancti Deodatiis), is a diocese of the Latin Rite of the Roman Catholic Church in France. The diocese has the same boundaries as the department of the Vosges. The bishop has his throne at Saint-Dié Cathedral in the town now named Saint-Dié-des-Vosges, but since 1944 has lived in Epinal, capital of the département. The diocese is currently a suffragan of the Archdiocese of Besancon.