James Duncan Hamilton was a British racing driver. He was known for his colourful and extroverted personality. After fighting in the Second World War, he took up motorsport. Although adept in single-seaters, he was more successful in sportscars, winning the 1953 24 Hours of Le Mans, two Coupe de Paris events, and the 12 heures internationals Reims race in 1956. He retired in 1958 and ran a garage in Bagshot, Surrey for many years. He died of lung cancer in 1994.

The 1953 24 Hours of Le Mans was the 21st Grand Prix of Endurance, and took place on 13 and 14 June 1953, at the Circuit de la Sarthe, Le Mans (France). It was also the third round of the F.I.A. World Sports Car Championship.