HMS Pandora was a British Parthian-class submarine commissioned in 1930 and lost in 1942 during the Second World War. This class was the first to be fitted with Mark VIII torpedoes. On 4 July 1940 she torpedoed and sank the French aviso Rigault de Genouilly off the Algerian coast. In an extension of the Lend-Lease program, Pandora, along with three other British and French submarines, was overhauled at Portsmouth Naval Shipyard in the United States. She was sunk on 1 April 1942 by Italian aircraft at the Valletta dockyard, Malta.