List of Catholic dioceses in Italy

As of May 2017[update], the Catholic Church in Italy is divided into sixteen ecclesiastical regions.

The sovereign state of Vatican City is part of the metropolitan province of Rome.

This list excludes those archdioceses, dioceses and ecclesiastical territories that are immediately subject to the Holy See.

The following are immediately Subject to the Holy See, despite not being in the Pope's Ecclesiastical Province of Rome.

(Byzantine Rite, the only non-Latin dioceses in Italy) The ecclesiastical provinces of L'Aquila, Chieti-Vasto and Pescara-Penne are mainly situated in the civil region of Abruzzo while Campobasso-Boiano is situated in Molise.

ecclesiastical provinces in Italy (above)/ Ecclesiastical regions (below)
The motherchurch of the Roman Catholic dioceses of Italy is the Archbasilica of St. John Lateran , the cathedral church of the pope .