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IOI 2025 took place in Bolivia. Visit the official website to learn more.

Just finished   IOI 2025 in Bolivia

IOI Videos

September 10th, 2025 in Contests

IOI 2019

Day 1 Highlights

Day 2 Highlights

Day 3 Highlights

Day 4 Highlights

Day 5 Highlights

Day 6 Highlights

Day 7 Highlights

IOI 2018

Arrival Day

Opening Ceremony

Contest Day 1

Excursion 1

Contest Day 2

Excursion 2

Closing Ceremony

Full Opening Ceremony

IOI 2017

Day 1 Highlights

Day 2 Highlights

Day 3 Highlights

Day 4 Highlights

Day 5 Highlights

Day 6 Highlights

Day 7 Highlights

IOI 2016

Closing ceremony 1

Closing ceremony 2

Excursion 1

Excursion 2

Excursion 3

IOI 2015

First Day

Second Day

Third Day

Fourth Day

Fifth Day

Sixth Day

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Beginners

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.

Statistics

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

Journal

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

About

The IOI is one of five international science olympiads. The primary goal of the IOI is to stimulate interest in informatics (computing science) and information technology.

Another important goal is to bring together exceptionally talented pupils from various countries and to have them share scientific and cultural experiences.

Contestants

Administration