David Alec Gwyn Simon, Baron Simon of HighburyCBE (born 24 July 1939) is a British businessman.
He graduated from the University of Cambridge in 1961 and joined British Petroleum as a management trainee, became chief executive of BP Oil International in 1982, managing director of BP in 1986, chief executive of BP in 1992 and chairman from 1995 to 1997.
In the early years of his career he spent some time at the elite business school INSEAD. He became Advisor to Unilever and was Chairman of the Belgo-British Conference in 2004.