The Archdiocese of Benevento is a Latin archdiocese of the Catholic Church. It currently has five suffragan dioceses: the diocese of Ariano Irpino-Lacedonia, the diocese of Avellino, the diocese of Cerreto Sannita-Telese-Sant'Agata de' Goti, the Territorial Abbey of Montevergine, and the archdiocese of Sant'Angelo dei Lombardi-Conza-Nusco-Bisaccia.

The Diocese of Avellino is a Latin diocese of the Catholic Church in the territory of the Irpini, some 55 km (30 mi) east of Naples and 23 km (14 mi) south of Benevento, in the modern Republic of Italy. It is suffragan to the archdiocese of Benevento. The bishop of Avellino, along with the bishop of S. Agata de' Goti, had the privilege, recognized at the provincial synod of 1654, of being summoned to attend upon the death and obsequies of the archbishop of Benevento.