Guillaume Moreau (born 8 March 1983 in Limoges, France) is a French former racing driver who competed in the Le Mans Series. In 2008, Moreau shared the GT1 class championship with teammate Patrice Goueslard in the Le Mans Series driving a Luc Alphand Corvette.
After beginning his career in single-seaters, Moreau switched to sports car racing. He competed in five consecutive editions of the 24 Hours of Le Mans race, from until , with a best result of seventh overall and second in class in the event. He was also scheduled to drive in the race, but withdrew after crashing heavily during the test day preceding the event, sustaining damage to his twelfth vertebra and compressing his spinal cord. After successful surgery, he began recuperating from his injuries. By 2014, Moreau had regained the ability to walk, and even returned to the seat of a race car with two private tests. Despite this, he chose to end his racing career, later taking over his father's company "La Scierie du Limousin" after he himself had been involved in a serious motorcycle accident.
Moreau now reportedly manages the insurance of around 100 racing drivers.
() (Races in bold indicate pole position) (Races in italics indicate fastest lap)