The RS Spyder is a race car built by Porsche. It marks the return of the Porsche factory to the upper echelons of sports car racing since the Porsche 911 GT1 finished the 1998 season.

The RS Spyder is named after the legendary 550 Spyder of the 1950's (combined with Porsche's common RS designation, for "Renn Sport"). This car marks Porsche's return to the Le Mans-type of sports car racing since the firm abandoned its latest Le Mans prototype in 1999, leaving the category for Audi to dominate.