The 2015 British Supersport Championship was the 28th British Supersport Championship season. It began at Donington Park on 5 April and ended at the Brands Hatch GP circuit on 18 October. It was won by Luke Stapleford, riding a Triumph Daytona 675. Defending champion Billy McConnell moved to the British Superbike Championship for 2015, and did not defend his title.