Francis Thomas "Tom" Bacon OBE FREng FRS[1] (21 December 1904 – 24 May 1992) was an English engineer who in 1932 developed the first practical hydrogen–oxygen fuel cell. It is used to generate power for space capsules and satellites.
Bacon was awarded an OBE by Queen Elizabeth II in the 1967 New Year Honours. In 1976, Bacon was a founder fellow of the Fellowship of Engineering (now the Royal Academy of Engineering), the United Kingdom's national academy of engineering.