The 2013 Autobacs Super GT Series was the twenty-first season of the Japan Automobile Federation Super GT Championship including the All Japan Grand Touring Car Championship (JGTC) era, and the ninth season under the name Super GT. It marked the thirty-first season overall of a Japanese professional sportscar championship dating back to the All Japan Sports Prototype Championship. It was the final year of the GT500 regulations introduced in 2010 as the 2014 season would see unified technical regulations with the Deutsche Tourenwagen Masters.[1] The season began on April 7 and ended on November 17, 2013 after 8 regular races and 1 non championship event.
Apart the series' 8 points-scoring races, the 3 Hours of Fuji, a part of 2013 Asian Le Mans Series organized by Automobile Club de l'Ouest, also counted for points towards the GT300 class.