The 2001 All Japan Grand Touring Car Championship was the ninth season of Japan Automobile Federation GT premiere racing. It was marked as well as the nineteenth season of a JAF-sanctioned sports car racing championship dating back to the All Japan Sports Prototype Championship. The GT500 class drivers' champions of 2001 were Yuji Tachikawa and Hironori Takeuchi, who had not won a single race during the season driving the No. 38 au Cerumo Toyota Supra, while Nismo won the teams' championship. In the GT300 category, the class champions were the No. 81 Advan Team Daishin Nissan Silvia driven by Takayuki Aoki and Noboyuki Oyagi.
This season marked the final competitive race victory for the McLaren F1 GTR, when Team Take One won the CP Mine GT Race.
For teams that entered multiple cars, only the best result from each round counted towards the teams' championship.
For teams that entered multiple cars, only the best result from each round counted towards the teams' championship.