HMS Jupiter was a Majestic-class pre-dreadnought battleship of the Royal Navy. Commissioned in 1897, she was assigned to the Channel Fleet until 1905. After a refit, she was temporarily put in reserve before returning to service with the Channel Fleet in September 1905. In 1908 and rendered obsolete by the emergence of the dreadnought type of battleships, she once again returned to the reserve, this time with the Home Fleet. After another refit, she had a spell as a gunnery training ship in 1912.