George Hudleston Hurlstone Hardy (14 August 1883 – 9 January 1966) was an entomologist who specialized in the biology of Diptera, especially Asilidae, Muscidae, Calliphoridae and Sarcophagidae. He was the eldest son of Matilda Margaret Hudleston and English engineer and amateur entomologist Major George Hurlstone Hardy, who wrote The Book of the Fly. Hardy grew up in the Old House on Park Road in Twickenham and his second cousin was composer William Yeates Hurlstone. Hardy studied engineering at the Northumberland Institute and abandoned his Roman Catholic faith after reading Darwin's On the Origin of Species.