John Godolphin Bennett (8 June 1897 – 13 December 1974) was a British mathematician, scientist, technologist, industrial research director and author. He is perhaps best known for his many books on psychology and spirituality, particularly on the teachings of G. I. Gurdjieff. Bennett met Gurdjieff in Istanbul in October 1920 and later helped to co-ordinate the work of Gurdjieff in England after Gurdjieff's arrival in Paris. He also was active in starting the British section of the Subud movement, and co-founded its British headquarters.