Battleships of Italy

Regina Margherita class - Pre-Dreadnoughts, both were sunk during World War I.
R.N. Regina Margherita
R.N. Benedetto Brin

Regina Elena class - The fastest Pre-Dreadnoughts in service in any navy, the Regina Elena class only carried two 12-inch guns (one fore, one aft).
R.N. Regina Elena
R.N. Vittorio Emanuele
R.N. Napoli
R.N. Roma

R.N. Dante Alighieri - Italy's first Dreadnought was also the first to be designed with triple turrets, but she was not completed before S.M.S. Viribus Unitis of Austria-Hungary.

Conte di Cavour class - Built with thirteen 12-inch guns, they were re-constructed between the wars with ten 12.6-inch guns.
R.N. Giulio Cesare
R.N. Conte di Cavour
R.N. Leonardo da Vinci

Andrea Doria class - Very similar to the Conte di Cavour class, they were also extensively modernised between the wars.
R.N. Caio Duilio
R.N. Andrea Doria

Vittorio Veneto class - With nine 15-inch guns the Vittorio Veneto class were powerful ships. R.N. Roma had the unfortunate distinction of being the first capital ship to be sunk by air-to-surface missiles.
R.N. Vittorio Veneto
R.N. Littorio
R.N. Roma