Admiral of the Fleet Sir Michael Le Fanu (2 August 1913 – 28 November 1970) was a Royal Navy officer. He fought in the Second World War as gunnery officer in a cruiser operating in the Home Fleet during the Norwegian campaign and the Battle of the Mediterranean and then as gunnery officer in a battleship operating in the Eastern Fleet before becoming liaison officer between the British Pacific Fleet and the United States Third Fleet. After the War he commanded a frigate, a training establishment and an aircraft carrier. He served as First Sea Lord and Chief of the Naval Staff in the late 1960s. In that role, in the face of economic difficulties, he worked hard to reshape the Navy as an anti-submarine force operating primarily in the Atlantic Ocean.