The 2021 European Le Mans Series was the eighteenth season of the Automobile Club de l'Ouest's (ACO) European Le Mans Series.
The Red Bull Ring returned to the series after a two-year absence, while Silverstone was not featured on the calendar.
[2] All cars in the LMP2 class used the Gibson GK428 V8 engine and Goodyear tyres.
[3] Entries in the LMP2 Pro-Am Cup, set aside for teams with a Bronze-rated driver in their line-up, are denoted with Icons.
All cars in the LMP3 class used the Nissan VK56DE 5.6L V8 engine and Michelin tyres.