Tags: Clerical Administrative Region, Diocese.
The Diocese of Civita Castellana (Latin: Dioecesis Civitatis Castellanae) is a Roman Catholic ecclesiastical territory in Latium central Italy. It has existed in the current form since 1986 when the Diocese of Nepi e Sutri was united into the Diocese of Civita Castellana Orte e Gallese dating from 1805 (the name change was made in 1991). It is immediately subject to the Holy See.