| Honorific Prefix: | Sir |
| Alexander Gordon-Lennox | |
| Birth Date: | 9 April 1911 |
| Death Date: | 4 July 1987 |
| Allegiance: |  United Kingdom |
| Serviceyears: | 1924–1962 |
| Rank: | Rear-Admiral |
| Commands: | 2nd Frigate Squadron HMS Mercury HMS Newcastle Royal Naval College, Greenwich |
| Branch: | Royal Navy |
| Battles: | World War II Malayan Emergency |
| Awards: | Knight Commander of the Royal Victorian Order Companion of the Order of the Bath Distinguished Service Order |
Rear-Admiral Sir Alexander Henry Charles Gordon-Lennox (9 April 1911 – 4 July 1987) was a British Royal Navy officer who became President of the Royal Naval College, Greenwich.
Born the son of Major Lord Bernard Gordon-Lennox, Gordon-Lennox joined the Royal Navy in 1924.[1] He served in the Middle East, in East Coast convoys and in Arctic convoys during the Second World War.[1] He became Commanding Officer of the sloop HMS Mermaid as well as Captain of the 2nd Frigate Squadron in 1954. He went on to become Commander of the signal school HMS Mercury in 1955, Flag Captain commanding the cruiser HMS Newcastle during the Malayan Emergency in 1957 and Deputy Chief of Supplies and Transport at the Admiralty in 1959.[1]
His last appointment was as President of the Royal Naval College, Greenwich in 1961 before retiring in 1962.[2] He was admitted a Companion of the Order of the Bath (CB) in the 1962 New Year Honours.
In retirement he was Serjeant-at-Arms of the House of Commons between 1961 and 1976[2] and was appointed a Knight Commander of the Royal Victorian Order (KCVO) in the 1972 New Year Honours.
Admiral Gordon-Lennox married Barbara Steele in 1936. They had two sons who both followed Royal Navy careers:[2]