Yuka Sato
Japan has qualified a total of four triathletes for the following events at the Games. Incoming four-time Olympian Hirokatsu Tayama and Ai Ueda secured their Olympic spots in the men's and women's triathlon, respectively, as a result of their gold medal triumph at the 2016 Asian Championships in Hatsukaichi. Meanwhile, Ueda's teammates Yurie Kato and 2010 Youth Olympic gold medalist Yuka Sato were ranked among the top 40 eligible triathletes in the women's event based on the ITU Olympic Qualification List as of May 15, 2016.