Admiral Sir Geoffrey Layton, GBE, KCB, KCMG, DSO (20 April 1884 – 4 September 1964) was a Royal Navy officer. He was in command of the submarine HMS E13 when, under attack from German vessels, it ran aground off the Danish coast during the First World War. Despite this incident, he rose to senior command in the Second World War and retired in 1947. His final appointment had been as Commander-in-Chief, Portsmouth.