The Diocese of Angers (Latin: Dioecesis Andegavensis; French: Diocèse d'Angers) is a Latin Church diocese of the Catholic Church in France. The episcopal see is located in Angers Cathedral in the city of Angers. The diocese extends over the entire department of Maine-et-Loire.
It was a suffragan see of the Archdiocese of Tours under the old regime as well as under the Concordat. Since the general reorganization of the French hierarchy of 8 December 2002, the diocese is a suffragan of the Archdiocese of Rennes, Dol, and Saint-Malo.