The 2005 FIA GT RAC Tourist Trophy was the third race for the 2005 FIA GT Championship season, and was the first time the RAC Tourist Trophy was held as a round of the FIA GT Championship. It took place on 15 May 2005 at the Silverstone Circuit. The Aston Martin DBR9 made its debut in the FIA GT Championship here. However, since both cars were entered by the factory, they were ineligible for scoring points.