John G. Bennett, English mathematician and technologist (d. 1974)
John Godolphin Bennett (8 June 1897 – 13 December 1974) was a British scientist, technologist, industrial research director, and author. He is best known for his 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 the guru had moved to Paris. He also was active in starting the British section of the Subud movement, and co-founded its British headquarters.

Bennett was born in London, England; educated at King's College School, London; Royal Military Academy, Woolwich; School of Military Engineering, Chatham; and the School of Oriental Studies, London.

He was a Fellow of the Institute of Fuel, London, from 1938 onwards; Chairman, Conference of Research Associations, 1943–1945; Chairman, Solid Fuel Industry, British Standards Institution, 1937–1942; Chairman and Director, Institute for the comparative study of History, Philosophy, and the Sciences, Kingston upon Thames, 1946–1959.