is an amateur Japanese Greco-Roman wrestler, who competed in the men's lightweight category. He is a three-time Olympian, a two-time Asian Games medalist (2002 in Busan, South Korea and 2006 in Doha, Qatar), and a bronze medalist at the 2005 Asian Wrestling Championships in Wuhan, China. He also won a silver medal for his division at the 2007 World Wrestling Championships in Baku, Azerbaijan, losing out to Georgia's David Bedinadze. Sasamoto is a member of the wrestling team for Sogokeibi Sports Club in Tokyo, and is coached and trained by Hideo Fujimoto.