The 2023 British Supersport Championship season was the 35th British Supersport Championship season, incorporating the 2023 British GP2 Cup. Jack Kennedy was the reigning series champion, but did not return to defend his title as he moved up to the 2023 British Superbike Championship. The season was marred by the sudden death of rider Damon Rees following a short illness.
Points are awarded to the top fifteen finishers in the respective classes. A rider has to finish the race to earn points.
Points are awarded to the top fifteen finishers in the respective classes. A rider has to finish the race to earn points.