The 2015 6 Hours of Silverstone was an endurance sports car racing event held at the Silverstone Circuit near Silverstone, England on 10–12 April 2015. The event served as the opening round of the 2015 World Endurance Championship. The race was won by the No. 7 Audi R18 e-tron quattro entered by Audi Sport Team Joest.
Pole position winners in each class are marked in bold.
The minimum number of laps for classification (70% of the overall winning car's race distance) was 141 laps. Class winners in bold.