The Aston Martin DBR9 is a racing car built by Aston Martin Racing, debuting in 2005 and racing actively in international sportscar racing until the end of GT1 category in 2011. The name DBR9 is derived from the original 24 Hours of Le Mans-winning DBR1 car, named for then-owner David Brown, which not only won the 24 Hour race in 1959 but also the World Sportscar title. The car is most famous for taking two LMGT1 class wins at Le Mans 24 Hours by the Aston Martin Racing factory team.

Aston Martin Racing is a British auto racing team established in 2004 as a partnership between automobile manufacturer Aston Martin and engineering group Prodrive. The partnership was initially created for the purpose of returning Aston Martin to sports car racing with the DBR9, a heavily modified variant of the Aston Martin DB9. Since the DBR9's racing debut in 2005, Aston Martin Racing has expanded to build a variety of cars available to customers, as well as development of Aston Martin's V12 engine for Le Mans Prototype use. Aston Martin Racing's program has earned several successes over the years.