Japan
- Contact
- National MO site: http://www.imojp.org/
- E-mail: 前田 吉昭 <info@imojp.org>
- IMO Host
- IMO 2003, IMO 2023
- Performance at the IMO
- First Participation: 1990
- Number of Participations: 36
- Gold Medals: 51
- Silver Medals: 100
- Bronze Medals: 53
- Honoable Mentions: 6