HMS Stonehenge was an S-class submarine of the third batch built for the Royal Navy during World War II. Completed in 1943, she made her initial patrol off Norway and was then transferred to the Far East, where she conducted two war patrols, during which she sank two Japanese ships. On her second patrol, Stonehenge disappeared with all hands and was declared overdue on 20 March 1944. The most probable cause of her sinking is that she hit a mine, but her wreck has never been found.