was a light cruiser which served with the Royal Navy during World War II. Early in 1941 the New Zealand Government responded to an Admiralty request for sailors to man an additional cruiser. "Neptune" was selected and was expected to leave the United Kingdom for New Zealand in May. However, because of the loss of cruisers during the Crete campaign "Neptune" was instead attached to Admiral Cunningham's Force K, based on Malta. On 19 December 1941 she was sunk by mines. Only one crewman survived.