List of Famous people named Guy

Guy Dollé is a French businessman. He was the CEO of the European steel manufacturer Arcelor until 2006. He was ousted as CEO following Arcelor's merger with Mittal Steel, at the end of a protracted takeover contest.

Guy Sibille is a former French racing cyclist. He won the French national road race title in 1976. He also competed in the team time trial at the 1972 Summer Olympics.

Guy Stewart Callendar was an English steam engineer and inventor. His main contribution to knowledge was developing the theory that linked rising carbon dioxide concentrations in the atmosphere to global temperature. He was the first to demonstrate that the Earth’s land temperature had increased over the previous 50 years in 1938. This theory, earlier proposed by Svante Arrhenius, has been called the Callendar effect. Callendar thought this warming would be beneficial, delaying a "return of the deadly glaciers."

Guy Dufaux is a French-born Canadian cinematographer. The majority of his works have been in Canadian cinema; he immigrated to Canada in 1965 and became a Canadian citizen in 1971. He is also the father of Montréal-based sculptor Pascal Dufaux and the brother of the late Canadian documentary filmmaker, Georges Dufaux.