Ronald Harold Hardy (born 16 November 1919) is an English novelist and screenwriter. His first novel The Place of Jackals was published in 1954 to general acclaim. Hardy drew on his experiences as a liaison officer in Indochina during World War II in the writing of this novel. A review in Time magazine claimed that the novel "establishes him as Graham Greene's No. 1 disciple."
Hardy won the 1962 James Tait Black Memorial Prize for his fifth novel Act of Destruction. Besides his seven works of fiction, he wrote one non-fiction book about the construction of the Uganda Railway entitled The Iron Snake.
Hardy was also a TV screenwriter, with Suspense and Armchair Theatre among his credits. He qualified as a Certified Public Accountant before turning to writing. He married Joyce Cook and had two children.