The 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 designed for the 4-6 best high school students from each participating country selected through internal National Science Olympiads, with the exception of the International Linguistics Olympiad, which allows two teams per country, the International Olympiad on Informatics, which allows two teams from the hosting country, and the International Junior Science Olympiad, which is designed 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.
International Science Olympiads
There are 11 commonly recognized International Science Olympiads:
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!Science Olympiad
!Abbreviation
!Years
!2025 host country
!2026 host country
!Reference
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|1|| International Mathematical Olympiad || IMO || since 1959 || || ||
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|2|| International Physics Olympiad || IPhO || since 1967 || || ||
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|3|| International Chemistry Olympiad || IChO || since 1968 || ||
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|4|| International Olympiad in Informatics || IOI || since 1989 || ||
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|5|| International Biology Olympiad || IBO || since 1990 || ||
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|6|| International Philosophy Olympiad || IPO || since 1993 || ||
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| || International Astronomy Olympiad|| IAO || since 1996 || ||
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|7|| International Geography Olympiad || iGeo || since 1996 || ||
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|8|| International Linguistics Olympiad || IOL || since 2003 || ||
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|9|| International Junior Science Olympiad || IJSO || since 2004 || ||
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|10|| International Earth Science Olympiad || IESO || since 2007 || ||
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|11|| International Olympiad on Astronomy and Astrophysics || IOAA || since 2007 || ||
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See also
- RoboCup
- Tuymaada
- WorldSkills