The 2021 British Superbike Championship season was the 34th British Superbike Championship season. Josh Brookes started the season as the reigning champion. The playoff system was reinstituted. Tarran Mackenzie on a McAMS Yamaha R1 took the 2021 BSB Championship Title over Tommy Bridewell.
The playoff will now consist of eight riders instead of six.
Points are awarded to the top fifteen finishers. A rider has to finish the race to earn points.