Italian ship Caio Duilio

Four ships of the Regia Marina, and the present day Italian Navy, have borne the name Caio Duilio, the name commemorating the 3rd century BC Roman naval leader Gaius Duilius:

• Caio Duilio was an ironclad warship launched in 1876 and scrapped in 1909.
• Caio Duilio was an Andrea Doria-class battleship launched in 1913 and scrapped in 1957.
• Caio Duilio was an Andrea Doria-class helicopter cruiser launched in 1962 and decommissioned in 1990.
• Caio Duilio is an Orizzonte-class destroyer launched in 2007 and currently in active service.