2009 Super GT Series

The season opener on March 22, was moved to Okayama, due to the continued renovation of Suzuka in preparation for the 2009 Japanese Grand Prix.

Manabu Orido and Tatsuya Kataoka won the GT300 title in the Racing Project Bandoh IS350 by three points from Nobuteru Taniguchi and Ryo Orime.

Honda continued to use their mid-engine NSX with performance ballast as the regulations originally planned to mandate front-engine cars.

Honda returned with the NSX in 2014 following the unveiling of the second-generation concept car in 2014, later revised to be based on the production model in 2017; both of which ran midship engine layout until 2019 season.

In order to combat sandbagging, where a team would intentionally perform poorly in order to secure a more favorable weight handicap, the success ballast formula was changed starting from this season: the ballast would be halved in the penultimate race and lifted altogether in final race for teams that participated in every round of the season.