Just finished

IOI 2023 was hosted by Hungary. Visit the official website to learn more.

Just finished   IOI 2023 in Hungary


Before contacting any member of the IOI, please make sure you research the details available on our website.
Almost everything (including the minutes of every meeting) is published and available online.


To contact the president, please refer to the Organization Page.

Office and Secretary of the IOI:

Please refer to the Office and Secretary details on the Organization Page.


To contact the webmaster of this site, please send an email to editor_at_ioinformatics.org or bojankostadinov_at_gmail.com.

Members of the IOI:

To contact any member country of the IOI, please refer to the Members page.

Mailing lists:

There are several mailing lists maintened by the IOI, and to which you can subscribe to:

  • IOI-announce – a moderated list for distribution of various announcements. The contact persons of all countries should be subscribed in this list.
  • IOI-discuss – general unmoderated discussion.
  • IOI-training – connects organizers of national/regional training camps with people who are interested in teaching in the camps.

Please refer to this page for details: https://lists.ioinformatics.org/

Need more info?


Not sure where to go? Click here to view some basic information on how to learn programming and prepare to win a medal at the IOI.


A couple of volunteers maintain a separate page with stats about people who participated at the International Olympiad in Informatics.


The IOI publishes a journal every year, with original high-quality scientific papers related to education, contests and algorithms.