Geoffrey Bertram Robert Feilden CBE FRS FREng FIMechE (20 February 1917 – 1 May 2004) was a mechanical engineer, and an important part of the Power Jets team that developed the first jet engine with Frank Whittle in the early 1940s. He was Chair of the Committee on Engineering Design from 1961 and authored the 1963 'Report of the Feilden Committee on Engineering Design'.