Sir Guy Reginald Archer Gaunt, , (25 May 1869 – 18 May 1953) was an Australian-born officer of the Royal Navy, counter-intelligence officer and a British Conservative Party politician.
Gaunt was born in Ballarat, Australia, to William Henry Gaunt and his wife Elizabeth Mary Palmer.
Gaunt's brother-in-law was Alexander Stenson Palmer (banker and M.P.
for Victoria).
Gaunt's brother Ernest Gaunt was also an admiral.
Their sister, Mary Elizabeth Bakewell Gaunt, was a well-known author in Australia and wrote several travel books.
Guy was educated at Melbourne Grammar School from 1881 to 1883.