Welcome to IMO2023

The Mathematical Olympiad Foundation (IMO) is pleased to confirm
that the 64th International Mathematical Olympiad will be held in Chiba on July 2-13, 2023.

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:

(change [at] to @)