Didier Theys (born 19 October 1956) is a Belgian sports car driver. He is a two-time overall winner of the 24 Hours of Daytona (1998 and 2002); a winner of the 12 Hours of Sebring (1998); the Sports Racing Prototype driver champion of the Grand-American Road Racing Association (2002) and the winner of the 24 Hours of Spa (1987 in a factory BMW). He was also the polesitter (1996) and a podium finisher at the 24 Hours of Le Mans (1997, 1998 and 1999). The podium finish in 1999 was a third overall in the factory Audi R8R with co-drivers Emanuele Pirro and Frank Biela. Theys' first appearance at Le Mans was in 1982, while his last start in the world's most famous endurance sports car race came 20 years later in 2002.