Admiral Sir Maurice James Mansergh KCB CBE (14 October 1896 – 29 September 1966) was a Royal Navy officer who went on to be Commander-in-Chief, Plymouth.

[2] He served on the staff of the Commander-in-Chief, Mediterranean Fleet from 1934 and then became executive officer on the battleship HMS Rodney from 1936.

[2] In 1939 he became director of the Trade Division at the Admiralty where his main role was the protection of shipping.

[3] He served in World War II as deputy assistant chief of the Naval Staff (Trade) and then, from 1941, as captain of the cruiser HMS Gambia.

[2] He was appointed commander of the 3rd Aircraft Carrier Squadron in 1948 and Fifth Sea Lord and Deputy Chief of Naval Staff (Air) in 1949,[2] with promotion to vice admiral on 30 September 1949.