Just finished

Due to the COVID-19 pandemic, IOI 2020 was hosted by Singapore online. Visit the official website to learn more.

Just finished   IOI 2020 was held online

Members

Here is a list of the countries and regions which have participated in the last three International Olympiads in Informatics.

It is intended that each country or region have a website or e-mail (or both) for contact purposes. 

Argentina
Email, Web

Armenia
Email

Australia
Email, Web

Austria
Email, Web

Azerbaijan
Email, Web

Bangladesh
Email, Web

Belarus
Email, Web

Belgium
Email, Web

Bolivia
Email, Web

Bosnia and Herzegovina
Email, Web

Brazil
Email, Web

Bulgaria
Email, Web

Canada
Email, Web

Chile
Email, Web

China
Email, Web

Colombia
Email, Web

Croatia
Email, Web

Cuba
Email, Web

Cyprus
Email, Web

Czech Republic
Email, Web

Denmark
Email, Web

Dominican Republic
Email, Web

Egypt
Email, Web

El Salvador
Email, Web

Estonia
Email, Web

Finland
Email, Web

France
Email, Web

Georgia
Email, Web

Germany
Email, Web

Greece
Email, Web

Hong Kong
Email, Web

Hungary
Email, Web

Iceland
Email, Web

India
Email, Web

Indonesia
Email, Web

Iran
Email, Web

Ireland
Email, Web

Israel
Email, Web

Italy
Email, Web

Japan
Email, Web

Jordan
Email, Web

Kazakhstan
Email, Web

Kyrgyzstan
Email, Web

Latvia
Email, Web

Lithuania
Email, Web

Luxembourg
Email, Web

Macau
Email, Web

Macedonia
Email, Web

Malaysia
Email, Web

Mexico
Email, Web

Moldova
Email, Web

Mongolia
Email, Web

Montenegro
Email, Web

Morocco
Email, Web

Netherlands
Email, Web

New Zealand
Email, Web

Nigeria
Email, Web

Norway
Email, Web

Palestine
Email, Web

Philippines
Email, Web

Poland
Email, Web

Portugal
Email, Web

Republic of Korea
Email, Web

Romania
Email

Russia
No contacts

Saudi Arabia
Email, Web

Serbia
Email, Web

Singapore
Email, Web

Slovakia
Email, Web

Slovenia
Email, Web

South Africa
Email, Web

Spain
Email, Web

Sri Lanka
Email, Web

Sweden
Email, Web

Switzerland
Email, Web

Syria
Email, Web

Taiwan
Email, Web

Tajikistan
Email

Thailand
Email, Web

Tunisia
Email, Web

Turkey
Email, Web

Turkmenistan
Email

Ukraine
Email, Web

United Kingdom
Email, Web

United States of America
Email, Web

Uzbekistan
Email

Venezuela
Email

Vietnam
Email


Former members

Albania

Gabon

Ghana

Kuwait

Libya

Madagascar

Malta

Mauritius
Email

Mozambique

Sudan
Email

Trinidad and Tobago

United Arab Emirates
Email

Zimbabwe

 

According to S2.1 of IOI Regulations: "For the IOI, a Country is a state that has an officially recognised relationship with the United Nations, UNESCO, or which has already taken part in one or more past IOIs".

Need more info?

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.