Sir Gilbert Samuel Inglefield GBE KCB (13 March 1909 – 14 October 1991) was a British architect and Lord Mayor of London from November 1967 to November 1968. Inglefield was the son of Admiral Sir Frederick Samuel Inglefield KCB FRGS DL, and Millicent Evelyn Cecilia Crompton the heiress of the Derbyshire banker John Gilbert Crompton He was an Alderman of the City of London. In 1957, he was appointed chairman of the Barbican Committee, responsible for building the Barbican Estate, replacing , who had died. He appeared as a castaway on the BBC Radio programme Desert Island Discs on 1 July 1968.