Sir Harry Deeley Mallaby-Deeley, 1st Baronet (27 October 1863, London – 4 February 1937, Cannes) was a British Conservative Party politician. Harry Deeley was educated at Shrewsbury School and Trinity College, Cambridge. His brother was the theatrical producer Frank Curzon. In 1913 he purchased the whole of the Duke of Bedford's Covent Garden estate for £2m., having already been involved in the purchase of the Piccadilly Hotel and St. James's Court, Buckingham Gate.