The 2021 Autobacs Super GT Series was a motor racing championship based in Japan for grand touring cars.
The series is sanctioned by the Japan Automobile Federation (JAF) and run by the GT Association (GTA).
TGR Team au TOM'S and drivers Yuhi Sekiguchi and Sho Tsuboi won the GT500 class championships, driving the Toyota Supra, after overcoming a 16-point deficit in the final round of the season.
[1] The titles were secured in controversial circumstances as championship leader Naoki Yamamoto of Team Kunimitsu was taken out from a title-clinching position by GT300 class driver Ren Sato with 15 laps remaining in the final race of the season.
The Fuji GT 500km Race also returned to its traditional calendar slot on the Golden Week holiday of 3-4 May.