The 2012 Silverstone GP3 Series round was a GP3 Series motor race held on 7 and 8 July 2012 at Silverstone Circuit in Silverstone, United Kingdom. It was the fourth round of the 2012 GP3 Season. The race supported the 2012 British Grand Prix. Trident Racing entered a third car for Giovanni Venturini in the GP3 category, making the Silverstone rounds the first time the GP3 Series had been run with a full twenty-seven car grid in 2012.