Contestants

Following are contestants of the 16th IOAA:

Afghanistan
Armenia
Austria
Azerbaijan
Bangladesh
Brazil
Bulgaria
Canada
China

Colombia
Croatia

Cyprus
Czechia
Ecuador

El Salvador
Estonia
France
Georgia

Germany
Greece

Hungary
India

Indonesia
Iran

Japan
Kazakhstan

Kyrgyzstan
Latvia
Lithuania

Malaysia
Nepal
Norway

Pakistan
Peru
Philippines
Poland
Portugal
Romania
Saudi Arabia
Serbia
Singapore
Slovakia
Slovenia

South Korea

Sri Lanka
Sweden
Thailand

Türkiye
Ukraine
United Arab Emirates

United Kingdom
United States of America
Vietnam