Some single-seater series, most mentioned above -
Japan:
Formula Nippon -
http://www.f-nippon.co.jp
All-Japan F3 [unofficial results site] -
http://isweb34.infoseek.co.jp/motor/fndc/fndce.html
Formula Dream -
http://www.f-dream.gr.jp
Other:
Asian F3 -
http://www.asianf3.net/
Asian Formula 2000 -
http://www.afos.com
China Formula 2000 -
http://www.ghiasports.com
Asia & China Formula Renault -
http://www.frdsports.com
Asian Formula Renault [Asian F3 site] -
http://www.asianf3.net/
China Formula Campus -
http://www.frdsports.com
Anyone know if there is there an official All-Japan F3 site?