Tony Southgate (born 25 May 1940, Coventry, England) is an English engineer and former racing car designer. He designed many successful cars, including Jaguar's Le Mans-winning XJR-9, and cars for almost every type of circuit racing. He was responsible for the chassis design of Ford's RS200 Group B rally car. Southgate was employed as chief designer or technical director for many Formula One teams for over twenty years. These teams included BRM, Shadow and Arrows. Southgate retired after producing the Audi R8C, which was a major influence in the Bentley Speed 8, which won Le Mans in 2003. He continues to be a regular visitor to current and historic race meetings.
Southgate is the only chief engineer to have won the Triple Crown of Motorsport with his cars: Indianapolis 500 with Eagle TG2 in 1968, the Monaco Grand Prix with the BRM P160B and the 24 Hours of Le Mans in 1988 and 1990 with Jaguar XJR-9 and Jaguar XJR-12.