Ryukyu Kobudo Hozon Shinko Kai
http://www.ryukyu-kobudo.com/

Okinawa Traditional Kobudo Preservation Society Bunbukan http://www2.tontonme.ne.jp/users/bunbukan/index(english).htm

Ryukyu Kobudo Tesshinkan Association http://www.geocities.com/isshintesshinkobudo/

World Oshukai Okinawa Kobudo Federation http://www.oshukai.com/