Humphrey Arthur Gilkes MC & Three Bars (13 October 1895 – 11 July 1945) was a British soldier and medical doctor.

He also served in the British Army in the Second World War, and was killed in an aeroplane crash at Djibouti.

Gilkes joined the Honourable Artillery Company as a private soldier after the outbreak of the First World War, and was commissioned as a second lieutenant in the London Regiment in September 1915, joining the 21st (County of London) Battalion (First Surrey Rifles).

Gilkes read medicine at Christ Church, Oxford from 1919, and then trained at St Bartholomew's Hospital in London, qualifying as a doctor in 1922 and serving briefly as a lieutenant in the Royal Army Medical Corps from February to November 1923.

[8] He joined the Colonial Medical Service, serving in Northern Rhodesia until 1936 and then in Trinidad until 1940.