Junichi Usui (臼井 淳一, Usui Jun'ichi) (born October 6, 1957, in Miyagi) is a retired Japanese long jumper, best known for finishing seventh at the 1984 Olympic Games.

Junichi Usui
Medal record
Men's athletics
Representing  Japan
Asian Championships
Gold medal – first place 1979 Tokyo 4×100 m
Gold medal – first place 1979 Tokyo Long jump
Silver medal – second place 1981 Tokyo Long jump
Bronze medal – third place 1985 Jakarta Long jump

International competitions

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Representing   Japan
Year Competition Venue Position Notes
1978 Asian Games Bangkok, Thailand 2nd
1979 Asian Championships Tokyo, Japan 1st 7.97 m CR
1981 Asian Championships Tokyo, Japan 2nd
1982 Asian Games New Delhi, India 3rd
1984 Olympic Games Los Angeles, United States 7th
1985 Asian Championships Jakarta, Indonesia 3rd
1986 Asian Games Seoul, South Korea 2nd
1987 World Championships Rome, Italy 12th
1988 Olympic Games Seoul, South Korea NM
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