International Olympiads

The International Olympiads, or International Science Olympiads, are a group of worldwide annual competitions in various areas of the formal sciences, natural sciences, and social sciences. The competitions are usually designed for a team of several best pre-college students from each participating country selected through national competitions. The International Linguistics Olympiad, the International Olympiad on Informatics, and the International Olympiad in Artificial Intelligence allow two teams if certain conditions are met.[1][2][3] The International Junior Science Olympiad is designed specifically for junior secondary students and also allows two teams from the hosting country.

Early editions of the first Olympiads were limited to the Eastern Bloc, but later they gradually spread to other countries.[4] They are unrelated to the International Olympic Committee.

International Olympiads are not organized by a single governing body. Competitions listed here are those which have been widely discussed as part of this group in reliable and independent sources.

Formal and natural sciences

# Science Olympiad Abbreviation Years 2025 host country 2026 host country References
1International Mathematical OlympiadIMOsince 1959 Australia China[5][6]
2International Physics OlympiadIPhOsince 1967 France Colombia[6][7]
3International Chemistry Olympiad IChOsince 1968 United Arab Emirates Uzbekistan [6][8]
4International Olympiad in InformaticsIOIsince 1989 Bolivia Uzbekistan [9][10]
5International Biology OlympiadIBOsince 1990 Philippines Lithuania [6][11]
International Astronomy Olympiad[a]IAOsince 1996 Bangladesh
 [6][12]
6International Junior Science OlympiadIJSOsince 2004 Russia Bulgaria [6][13]
7International Earth Science OlympiadIESOsince 2007 China Italy [6][14]
8International Olympiad on Astronomy and AstrophysicsIOAAsince 2007 India Vietnam [6][15]
9 International Olympiad in Artificial Intelligence IOAI since 2024 China Kazakhstan [6][16]

Social sciences

# Science Olympiad Abbreviation Years 2025 host country 2026 host country References
10International Philosophy OlympiadIPOsince 1993 Italy Poland [6][17]
11International Geography OlympiadiGeosince 1996 Thailand Turkey [6][18]
12International Linguistics OlympiadIOLsince 2003 Taiwan Romania [6][19]
13International Economics OlympiadIEOsince 2018 Azerbaijan China [6][20]

See also

Notes

  1. ↑ shrunk in favor of the IOAA and now held online

References

  1. ↑ "Participating Countries and Territories". International Linguistics Olympiad. Retrieved 2026-08-23.
  2. ↑ "How can I compete?". International Linguistics Olympiad. Retrieved 2026-08-23.
  3. ↑ "Registration". International Olympiad in AI. Retrieved 2026-08-23.
  4. ↑ "THE EÖTVÖS COMPETITION". Archived from the original on 2017-04-21. Retrieved 2016-06-06.
  5. ↑ "International Mathematics Olympiad (IMO)". 2008-02-01.
  6. 1 2 3 4 5 6 7 8 9 10 11 12 13 Gal-Ezer, Judith; Zohar, Doron; Rolnik, Anat (2025). "International Science Olympiads: The Israeli Teams" (PDF). OLYMPIADS IN INFORMATICS: 45–62. doi:10.15388/ioi.2025.04.
  7. ↑ "IPhO - The International Physics Olympiad, Singapore". www.ipho-new.org. Retrieved 2022-07-03.
  8. ↑ "International Chemistry Olympiad". International Chemistry Olympiad. Retrieved 2026-08-23.
  9. ↑ "Korea wins Olympiad gold, but why no Nobel yet?". Korea JoongAng Daily. 2026-07-23. Retrieved 2026-08-23.
  10. ↑ "International Olympiad in Informatics". ioinformatics.org. Retrieved 2026-08-23.
  11. ↑ "International Biology Olympiad". International Biology Olympiad. Retrieved 2026-08-23.
  12. ↑ "The International Astronomy Olympiad: main page". www.issp.ac.ru. Retrieved 2026-08-23.
  13. ↑ "IJSO - International Junior Science Olympiad | IJSO Official Website | IJSO Official Webpage | International Junior Science Olympiad Official". IJSOWeb.org. Retrieved 2026-08-23.
  14. ↑ "International Geoscience Education Organisation | promoting GeoScience education worldwide". Retrieved 2026-08-23.
  15. ↑ "IOAA - International Olympiad on Astronomy and Astrophysics - IOAA". ioaastrophysics.org. Retrieved 2026-08-23.
  16. ↑ "Home AI". International Olympiad in AI. 2026-08-10. Retrieved 2026-08-23.
  17. ↑ "International Philosophy Olympiad". www.philosophy-olympiad.org. Retrieved 2026-08-23.
  18. ↑ "iGeo - The International Geography Olympiad - Geography Competition for Students Ages 16-19". International Geography Olympiad. Retrieved 2026-08-23.
  19. ↑ "International Linguistics Olympiad". International Linguistics Olympiad. Retrieved 2026-08-23.
  20. ↑ "IEO | International Economics Olympiad | Official Website". ieo-official.org. Retrieved 2026-08-23.
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