The Peugeot 908 HDi FAP is a sports prototype racing car built by the French automobile manufacturer Peugeot to compete in the 24 Hours of Le Mans endurance race, starting in 2007 and eventually winning in 2009. This effort, in development since 2005, was publicly unveiled on 15 June 2006. It first competed against the Audi R10 TDI, becoming the second diesel engined sports car from a major manufacturer, and then against the Audi R15 TDI. This was Peugeot Sport's first Le Mans effort since the end of the Peugeot 905 project in 1993. It won 19 from the 28 races in which it raced between 2007 and 2011.

The 24 Hours of Le Mans is an endurance-focused sports car race held annually near the town of Le Mans, France. It is widely considered to be one of the world's most prestigious races, and is one of the races—along with the Monaco Grand Prix and Indianapolis 500—that form the Triple Crown of Motorsport, and is also one of the races alongside the 24 Hours of Daytona and 12 Hours of Sebring that make up the informal Triple Crown of endurance racing. Run since 1923, it is the oldest active endurance racing event in the world.