| Sir Algernon Boyle | |
| Birth Date: | 21 October 1871 |
| Birth Place: | Belgravia, London |
| Death Place: | London, England |
| Birth Name: | Hon. Algernon Douglas Edward Harry Boyle |
| Allegiance: |  United Kingdom |
| Serviceyears: | 1884–1924 |
| Rank: | Admiral |
| Branch: | Royal Navy |
| Commands: | HMS Malaya |
| Battles: | World War I |
| Awards: | Knight Commander of the Order of the Bath Companion of the Order of St Michael and St George Member of the Royal Victorian Order |
Admiral The Honourable Sir Algernon Douglas Edward Harry Boyle (21 October 1871 - 13 October 1949) was a Royal Navy officer who went on to be Fourth Sea Lord.[1]
Boyle was born at 37, Lowndes Street, Belgravia, the youngest son of Henry Boyle, 5th Earl of Shannon, and his second wife, Julia Cradock-Hartopp. He had two elder brothers and three elder half-brothers, including Richard Boyle, 6th Earl of Shannon.[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, and in April that year was assigned for temporary duty at the Admiralty.[3] Four months later, in August 1902, he was posted at the protected cruiser HMS Isis.[4]
He served in World War I and, as Captain of HMS Malaya, took part in the Battle of Jutland in 1916.[5] He was Aide-de-camp to the King from 1918 to 1919 and served as Fourth Sea Lord from 1920 to 1924.[6] He retired in 1924.[2]