HMS Calliope was a Calypso-class corvette (later classified as a third-class cruiser) of the Royal Navy of the United Kingdom which served from 1887 until 1951. Exemplifying the transitional nature of the late Victorian navy, Calliope was a sailing corvette—the last such ship built for the Royal Navy—but supplemented the full sail rig with a powerful engine. Steel was used for the hull, and like the earlier iron-hulled corvettes, Calliope was cased with timber and coppered below the waterline, in the same manner as wooden ships.