The Italian submarine Iride was a 600-Serie Perla-class submarine, serving with the Regia Marina during World War II. She was originally armed with six 21 inch torpedo tubes, 12 torpedoes, one 100 mm (3.9 in) deck gun and room for up to four 13.2 mm machine guns. During the course of the war, Iride was converted to carry human torpedoes, which were stowed in cylinders mounted on her deck.