The 2015 Catalunya GP2 and GP3 Series round was a pair of motor races held on May 9 and 10, 2015 at the Circuit de Catalunya in Spain as part of the GP2 and GP3 Series. It was the second round of the 2015 GP2 Series season and the first round of the 2015 GP3 Series season. The race weekend supported the 2015 Spanish Grand Prix.