List of cathedrals in Italy

This is a list of cathedrals in Italy, including also Vatican City and San Marino.

This is intended to be a complete list of extant cathedrals – i.e., churches that are the seats of bishops – and co-cathedrals.

This is often translated as "cathedral", but not entirely accurately: "duomo" refers to the principal church of a town or city, whatever its status.

There is a very small number of churches, such as that at Monza, which have such exceptional distinction or status that they are comparable in importance to cathedrals without having ever been the seats of bishops, and are commonly known in English as cathedrals.

There is a separate (incomplete) list for this small group of churches.