Ettore Fieramosca was a protected cruiser of the Italian Regia Marina (Royal Navy) built in the 1880s. She was the fourth and final member of the Etna class, which included three sister ships of slightly smaller dimensions. Named for the condottiero of the same name, she was the only member of her class not named for a volcano. The ship was laid down in December 1885, launched in August 1888, and was commissioned in November 1889. She was armed with a main battery of two 254 mm (10 in) and a secondary battery of six 152 mm (6 in) guns, and could steam at a speed of around 17 knots (31 km/h; 20 mph).