Koichi Morishita (born 5 September 1967) is a retired male long-distance runner from Japan. He competed for his native country at the 1992 Summer Olympics in Barcelona, Spain where he won the silver medal in the men's marathon event.
He is a manager of Toyota Kyūshū Athletic team, based in Miyawaka, Fukuoka, since 1999. He has been instructing many runners including Samuel Wanjiru, who used to be a member of the team from 2005 to early 2008.
| Year | Tournament | Venue | Result | Event |
|---|---|---|---|---|
| 1990 | Asian Games | Beijing, PR China | 1st | 10,000 m |
| 1991 | World Championships | Tokyo, Japan | 10th | 10,000 m |
| 1992 | Olympic Games | Barcelona, Spain | 2nd | Marathon |
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