Balkan Mathematical Olympiad was created in 1984.
Junior Balkan Mathematical Olympiad was created in 1997.
International Mathematical Olympiad was created in 1959.
Bangladesh Mathematical Olympiad was created in 2001-04.
China Girls Mathematical Olympiad was created in 2002.
Mathematical Olympiad Summer Program was created in 1974.
United States of America Mathematical Olympiad was created in 1972.
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Computer Olympiad was created in 1989.
United States Junior Mathematical Olympiad
Chinese Chemistry Olympiad was created in 1984.
International Olympiad in Informatics was created in 1989.
World Robot Olympiad was created in 2004.