Association of the Chemistry Olympiad - Founded in Germany in 1992, aims to increase contact among former participants at the International Chemistry Olympiads.

United States National Chemistry Olympiad - Goals and history of the USNCO, and some past exams.

International Chemistry Olympiad Information Center - History, regulations, reports, minutes, and an index of IChO home pages.

32th International Chemistry Olympiad (Denmark, 2000) - Exams, preparatory problems and worked solutions, participating countries, results, and medallists.

30th International Chemistry Olympiad (Australia, 1998) - Exams, preparatory problems and worked solutions, participating countries, regulations, results, and medallists.

26th International Chemistry Olympiad (Norway, 1994) - The official report, theoretical and practical problems, results, and statistics.

29th International Chemistry Olympiad (Canada, 1997) - Exams and solutions, participating countries, results, and medallists.

33rd International Chemistry Olympiad (India, 2001) - Includes program, statutes, syllabus, preparatory problems, contacts, medallists, and general information about India.

IChO Mailing List - Only available to former IChO participants. Includes archives.

Swiss Chemistry Olympiad Server - Information about Swiss Chemistry Olympiad, collection of problems and answers from IChOs.

Australian Chemistry Olympiad - History, syllabus, examination papers, and honour roll.

The International Chemistry Olympiad '95 - Personal page of Antti Niskanen's from Finland. Includes a list of participants contact information and personal pages.

Markku's IChO Home Page - Markku Ursin, from Finland, participated in the 27th IChO in China. The photo gallery is guaranteed to bring fond memories to those who participated in that year's olympiad.