The 2015 F4 Japanese Championship was the inaugural season of the F4 Japanese Championship. It began on 4 April in Okayama and finished on 15 November on Twin Ring Motegi after seven double header rounds.[1]
^"サード、来季F4/S耐参戦を決定。NRAと提携強化" [SARD, to determine the competing in next season F4 and Super taikyu. NRA affiliated with strengthening]. as-web.jp. 29 October 2014. Retrieved 19 February 2015.
^ ab"ZAP SPEED、FIA-F4参戦ドライバー3名を発表" [ZAP SPEED, announced the three FIA-F4 drivers]. as-web.jp. 7 January 2015. Retrieved 19 February 2015.
^ ab"全日本カートFS125クラス王者がFIA-F4に参戦" [All-Japan cart FS125 class champion, joined FIA-F4]. as-web.jp. 17 February 2015. Retrieved 19 February 2015.
^ abc"B-MAX、FIA-F4に2台を投入。初代王者目指す" [B-MAX Participated two to FIA-F4. Aim the first champion.]. as-web.jp. 9 February 2015. Retrieved 19 February 2015.
^ ab"2015年Le Beausset Motorsports参戦体制を発表!" [2015 Le Beausset Motorsports Announces competed order.] (PDF). Le Beausset Motorsports. 20 February 2015. Retrieved 2 March 2015.