Apr 182009
Founded in the 4th century. Merged with the diocese of Terni, Italy to form the diocese of Terni e Narni, Italy on 12 April 1907. Notable bishops include
- Saint Cassius of Narni
- Saint Juvenal of Narni
- Saint Proculus of Narni
- Archbishop Francesco Moretti
- Bishop Antonio David
- Bishop Antonio Maria Borghi
- Bishop Cesare Boccanera
- Bishop Francesco Picarelli
- Bishop Francesco Saverio Guicciardi
- Bishop Giacinto Luzi
- Bishop Gioacchino Maria Oldo
- Bishop Gioacchino Tamberini
- Bishop Giuseppe Maria Galligari
- Bishop Nicola Terzago
- Bishop Prospero Celestino Meloni
- Bishop Vitale Galli