Vice-Admiral Sir Arthur Lumley St George Lyster, KCB, CVO, CBE, DSO (27 April 1888 – 4 August 1957)[1] was a Royal Navy officer during the Second World War.

After leaving Berkhamsted School, in 1902 Lyster joined HMS Britannia to train for a naval career.

[2] Lyster was appointed a Naval Member of the Ordnance Committee in 1929 and given command of the cruiser HMS Danae in 1932.

[2] He went on to command the 5th Destroyer Flotilla in 1933 and the Royal Navy Gunnery School at Chatham in 1935 before becoming director of training and staff duties at the Admiralty in 1936.

[2] He is notable for drawing up the attack plan for the Battle of Taranto, beginning in 1935 on the instructions of Admiral Sir Dudley Pound, and for putting it into execution in November 1940.