The Ammiraglio di Saint Bon class was a pair of pre-dreadnought battleships built for the Italian Regia Marina (Royal Navy) during the 1890s.

Since the planners had not determined what type of battleship would best suit their strategic needs, the government stepped in and mandated a 10,000-long-ton (10,160 t) design, a limit significantly lower than the earlier classes.

Ammiraglio di Saint Bon had a crew of 557 officers and enlisted men, while Emanuele Filiberto had a slightly larger complement of 565.

[2] The ships' propulsion system consisted of two triple-expansion steam engines, which drove a pair of screw propellers.

Steam for the engines was provided by twelve coal-fired cylindrical fire-tube boilers, which were ducted into a pair of widely spaced funnels.

[2] The ships spend the first several years in the active duty squadron until they were replaced by the new Regina Elena-class battleships, which entered service by 1908.

[5] Emanuele Filiberto took part in the attack on Tripoli in October 1911,[6] though Ammiraglio di Saint Bon did not see action in the first months of the war.

Both ships participated in the seizure of the island of Rhodes, where Ammiraglio di Saint Bon provided gunfire support to the soldiers ashore.

[7] The two ships were slated to be scrapped in 1914–1915 due to their age, but the outbreak of World War I in August 1914 prevented their disposal.

[8] Both Ammiraglio di Saint Bon and Emanuele Filiberto were used as harbor defense ships in Venice for the duration of the war, and did not see action there.