The 2013 British Superbike season was the 26th British Superbike Championship season. Shane Byrne stayed in the championship to defend his title from the previous season on the Paul Bird Kawasaki; Ryuichi Kiyonari returned to the championship on board the Samsung Honda to challenge for his fourth British Superbike Championship, with new teammate Alex Lowes looking to win his first championship after showing his pace at the end of the previous season. Josh Brookes stayed on board the Tyco Suzuki and James Ellison returned to try to win the illusive British title riding the Milwaukee Yamaha in what was billed to be the biggest title fight for years.