Super League XXVI, known as the Betfred Super League XXVI for sponsorship reasons, was the 26th season of the Super League and 127th season of rugby league in Great Britain. The 2021 season was originally scheduled to begin on 11 March 2021, however, on 14 January 2021, it was announced that all clubs had agreed to push the start date back by two weeks, to increase the chances of fans being able to attend matches. St Helens are the reigning champions going into Super League XXVI, after successfully retaining their title against Wigan Warriors, in the Grand Final.