The 2009 Japanese Formula 3 Championship was the 31st edition of the Japanese Formula 3 Championship. It commenced on April 4, 2009 and ended on September 27.
Marcus Ericsson became the first Swedish champion, after a title battle which went down to the final round in Sportsland SUGO. Ericsson won with 112 points, beating his teammates Takuto Iguchi with 103 points, and Yuji Kunimoto with 97 points.[1]