Yoshiharu Yamaguchi

| birth_place = Mihama, Fukui, Japan | height = | weight = | school = Wakasa Higashi High School | university = Nihon University | ru_position = Flanker | amatyears1 = | amatteam1 = Nihon University RFC | years1 = | clubs1 = | apps1 = | points1 = | repyears1 = 1967–1973 | repteam1 = | repcaps1 = 13 | reppoints1 = 94 }} is a former Japanese rugby union player. He made his debut for Japan against a touring New Zealand Universities team in Osaka on 12 March 1967. He last appeared for Japan against England's under 23 team in Twickenham on 13 October 1973.

He inspired the Japanese TV series ''School Wars'' and the film ''School Wars: Hero'' which are based on his true story. Provided by Wikipedia