The 2023 Super GT Series was a motor racing championship based in Japan for grand touring cars, sanctioned by the Japan Automobile Federation (JAF) and ran by the GT Association (GTA). It was the thirty-first season of the JAF Super GT Championship, which included the All Japan Grand Touring Car Championship era, and the nineteenth season under the Super GT name. It was also the forty-first overall season of a national JAF sportscar championship dating back to the All Japan Endurance/Sports Prototype Championship.

Super GT is a sports car racing series that began in 1993. Launched as the Zen Nihon GT Senshuken (全日本GT選手権), generally referred to as the All Japan Grand Touring Car Championship (JGTC), the series was renamed to Super GT in 2005. It is the top level of sports car racing in Japan.