Guy James Mutlow Smith is a British professional racing driver and IB English teacher and coordinator in Brazil, who has competed in various levels of motorsport, most notably the 24 Hours of Le Mans, which he won in 2003, and the American Le Mans Series, which he won in 2011.

The 2003 24 Hours of Le Mans was a non-championship 24-hour automobile endurance race from 14 to 15 June 2003 at the Circuit de la Sarthe near Le Mans, France for teams of three drivers each entering Le Mans Prototype and Grand Touring cars before approximately 220,000 people. It was the race's 71st edition, as organised by the automotive group, the Automobile Club de l'Ouest (ACO) since 1923. A test day was held seven weeks prior to the race on 4 May.