Welcome to IMO2023

The 64th International Mathematical Olympiad, where math enthusiasts from all over the world compete to solve challenging problems, took place from July 2 (Sunday) to July 13 (Thursday) in Makuhari, Chiba Prefecture. This event marks the first time Japan has hosted the event in 20 years since the 44th competition in 2003. Six hundred eighteen participants (including 67 female students) from 112 countries and regions attended. Including accompanying officials, over 1000 people gathered in Japan. Please enjoy the lively scenes from the opening and closing ceremonies.

Opening Ceremony

Closing Ceremony

Hosted by

The Mathematical Olympiad Foundation of Japan

Co-hosted by

Japan Science and Technology Agency (JST)

In association with

  • Ministry of Education, Culture, Sports, Science, and Technology (MEXT) - Japan
  • Mathematical Society of Japan
  • Japan Society of Mathematical Education
  • Chiba Convention Bureau and International Center (CCB-IC)

You can read the Annual Regulation for IMO2023 from here.


Contact Information for IMO2023

For questions about IMO2023 in general, please contact:
For questions by participating countries or regions, and confirmed individual participants including contestants, please contact:
For questions about sponsorship, event management and media support, please contact:

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