Tadanori Koshino

is a retired judoka who competed in the 60 kg division.

Biography Koshino began learning judo with a local sports team while he was in elementary school, and became the Hokkaidō Prefecture champion for his weight class in junior-high school. He placed third in the inter-highschool tournament during his senior year, and entered Tōkai University in 1985. and placed second in the World Judo Championships in 1989 before winning the world championships in 1991. He retired from competitive judo after finishing with a bronze medal at the 1992 Summer Olympics. He became an instructor for the International Budo University in April, 1993.