IOI 2025 Call for Tasks
Dear IOI Community, The Call for Tasks for the International Olympiad in Informatics (IOI) 2025 is now open. IOI is the most prestigious...
Italian Olympiad in Informatics 2024
For the eight time, the Italian national contest (valid for the selection of the Italian IOI team) will be mirrored into an online contest. The...
IOI response to the conflict in Gaza
Dear Colleagues and members of the IOI community, This message is being sent to provide an update on a significant decision of the General Assembly...
Call for hosts for IOI 2028 and 2027
Greetings to the IOI community, I am writing to you now regarding the future of IOI. During each Olympiad, we take bids for future hosts: this...
Online practice session and grading environment
Dear IOI leaders, The online practice session is starting now. Both the leaders and the contestants will receive CMS access instruction in a...
Singapore hosted IOI 2021
You can read more about the previous organizers of the IOI on the Editions page.
IOI 2022 took place in Indonesia
Several other Olympiads have also been scheduled, including IOI 2023 in Hungary and IOI 2024 in Egypt.
IOI 2023 was held in Hungary
The Olympiad took place in Szeged between August 28th and September 4th.
IOI 2024 was hosted by Egypt
IOI 2024 was organized by Egypt, from September 1-8. Visit the official website of the event to learn more.
Bolivia will host IOI 2025
Bolivia and Uzbekistan will host IOI 2025 and IOI 2026, respectively. Check out the Editions page for more information. Future event
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.
Several International Olympiads in Informatics have been organized so far, hosted by a number of different countries.
The International Olympiad in Informatics is organized according to the IOI Regulations, and the decision made by the General Assembly.
On this site, you can find all regulations, minutes, and people involved with the organization.