Roman Catholic Diocese of Ariano Irpino-Lacedonia

The Diocese of Ariano Irpino - Lacedonia (Latin: Dioecesis Arianensis Hirpinus - Laquedoniensis ) is a diocese located in Italy, the Roman Catholic church located in Ariano Irpino.

The diocese belongs to the Ecclesiastical Province of Benevento and was founded in the 11th century as the Diocese of Ariano. The Diocese of Ariano Irpino - Lacedonia emerged on 30 September 1986 by the union of the formerly separate dioceses Ariano Irpino and Lacedonia.