SM UC-17 was a German Type UC II minelaying submarine or U-boat in the Imperial German Navy in World War I. She was ordered on 29 August 1915 and launched on 29 February 1916. She was commissioned into the Imperial German Navy on 21 July 1916 as SM UC-17. In 21 patrols UC-17 was credited with sinking 97 ships by either torpedo or laying mines. They included the Royal Fleet Auxiliary munitions ship RFA Lady Cory-Wright, which she torpedoed and sank in the English Channel on 26 March 1918. UC-17 was surrendered on 26 November 1918 and broken up at Preston in 1919–20.