International Mathematical Olympiad was created in 1959.
Balkan Mathematical Olympiad was created in 1984.
Bangladesh Mathematical Olympiad was created in 2001-04.
China Girls Mathematical Olympiad was created in 2002.
Mathematical Olympiad Summer Program was created in 1974.
Junior Balkan Mathematical Olympiad was created in 1997.
United States of America Mathematical Olympiad was created in 1972.
International Olympiad in Informatics was created in 1989.
International Chemistry Olympiad was created in 1968.
International Biology Olympiad was created in 1990.
International Junior Science Olympiad was created in 2004.
International Mathematical Union was created in 1919.
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