Akihiro Yamaguchi

Akihiro Yamaguchi (山口 観弘) is a retired Japanese swimmer and former world record holder who specializes in the breaststroke.

At the 2011 World Junior Swimming Championships in Lima, Yamaguchi won a total of four medals: one gold and three silvers. His gold came in the 200-meter breaststroke with a time of 2:11.70.

On September 15, 2012, at the National Sports Festival of Japan, he set a new world record in the 200-meter breaststroke (long course) with a time of 2:07.01, bettering the previous record of 2:07.28.