HMS E24 was an E-class submarine of the Royal Navy built by Vickers, Barrow-in-Furness. She was launched on 9 December 1915 and was commissioned on 9 January 1916. E24 was mined off Heligoland Bight on 24 March 1916. A salvage operation was attempted in 1973 as she was believed to be a German U-boat.