Juan Manuel Fangio Déramo (Spanish pronunciation: [ˈfanχjo], Italian pronunciation: [ˈfandʒo]; 24 June 1911 – 17 July 1995), nicknamed El Chueco ("the bowlegged one", also commonly translated as "bandy legged") or El Maestro ("The Master"), was a racing car driver from Argentina. He dominated the first decade of Formula One racing, winning the World Drivers' Championship five times.

From childhood, he abandoned his studies to pursue auto mechanics. In 1938, he debuted in Turismo Carretera, competing in a Ford V8. In 1940, he competed with Chevrolet, winning the Grand Prix International Championship and devoted his time to the Argentine Turismo Carretera becoming its champion, a title he successfully defended a year later. Fangio then competed in Europe between 1947 to 1949 where he achieved further success.

He won the World Championship of Drivers five times—a record which stood for 47 years until beaten by Michael Schumacher—with four different teams (Alfa Romeo, Ferrari, Mercedes-Benz and Maserati), a feat that has not been repeated. A member of the Formula 1 Hall of Fame, he is regarded by many as one of the greatest F1 drivers of all time and holds the highest winning percentage in Formula One - 46.15% - winning 24 of 52 Formula One races he entered. Fangio is the only Argentine driver to have won the Argentine Grand Prix, having won it four times in his career—the most of any driver.