| Sir Thomas Jackson | |
| Birth Date: | 20 February 1868 |
| Birth Place: | Stoke Damerel, Devon, England |
| Death Place: | London, England |
| Allegiance: |  United Kingdom |
| Rank: | Admiral |
| Commands: | HMS Thunderer (1911)[1] |
| Battles: | World War I |
| Awards: | Knight Commander of the Order of the British Empire Companion of the Order of the Bath Member of the Royal Victorian Order |
Admiral Sir Thomas Jackson, KBE, CB, MVO (20 February 1868 – 7 July 1945) was a senior Royal Navy officer during World War I.
Born the son of Admiral Sir Thomas Sturges Jackson,[2] Jackson joined the Royal Navy in 1881. He was promoted to commander on 31 December 1899, and in early 1900 was posted in lieu of a lieutenant to the pre-dreadnought battleship HMS Revenge,[3] stationed in the Fleet Reserve at Chatham Dockyard.[4]
During the Russo-Japanese War, Jackson was a military observer stationed on the Imperial Japanese Navy cruiser, and was present at the Battle of Tsushima. After the war, he was promoted captain in 1905,[5] and remained as a military attaché in Tokyo in 1906.[6]
In 1913 he became the Director of the Intelligence Division of the Admiralty War Staff and then served in World War I becoming Director of the Operations Division in January 1915.[7] He played a key role in the Battle of Jutland in May 1916, providing Admiral Jellicoe with incorrect information that the German High Seas Fleet appeared to have remained in harbour.[8] Promoted to rear admiral in June 1916,[5] he was made Flag Officer, Egypt & The Red Sea in July 1917.[7] He was promoted to vice admiral in March 1920.[5] He retired in 1923 and was promoted admiral on the retired list in 1925.[9]
In 1907 he married Mona Anna Murray.[2]