The 2021 European Le Mans Series was the eighteenth season of the Automobile Club de l'Ouest's (ACO) European Le Mans Series. The six-event season began at Circuit de Barcelona-Catalunya on 18 April and finished at Algarve International Circuit on 24 October.[1]
The series was open to Le Mans Prototypes, divided into the LMP2 and LMP3 classes, and grand tourer-style racing cars in the LMGTE class.