Baltic Chemistry Olympiad was created in 1993.
Iranian Biology Olympiad was created in 1999.
International Mathematical Olympiad was created in 1959.
Chinese Chemistry Olympiad was created in 1984.
World Robot Olympiad was created in 2004.
International Olympiad in Informatics was created in 1989.
Balkan Mathematical Olympiad was created in 1984.
Mind Sports Olympiad was created in 1997.
International Chemistry Olympiad was created in 1968.
International Biology Olympiad was created in 1990.
USA Biology Olympiad was created in 2002.
Bangladesh Mathematical Olympiad was created in 2001-04.