Admiral The Honourable Sir Algernon Douglas Edward Harry Boyle KCB CMG MVO (21 October 1871 – 13 October 1949) was a Royal Navy officer who went on to be Fourth Sea Lord.

[1] Boyle joined the Royal Navy as a cadet on the training ship HMS Britannia in 1884.

[2] He was promoted to Commander on 1 January 1902,[3] and in April that year was assigned for temporary duty at the Admiralty.

[4] Four months later, in August 1902, he was posted at the protected cruiser HMS Isis.

[5] He served in World War I and, as Captain of HMS Malaya, took part in the Battle of Jutland in 1916.