The International Chemistry Olympiad (IChO) is an annual academic competition for high school students. Its aim is to promote friendship and cooperation among young scientific workers, and to facilitate the exchange of pedagogical and scientific experience. The competition consists of both theoretical and experimental parts. Participation is decided at the national level, with each country selecting a team of four students through national competitions.
Checked November 4, 2026 against the Steering Committee’s current calendar and fee statement and the official host’s regulations, valid from August 1, 2023. The international event is July 19–28, 2027 in Chinese Taipei. No exact 2027 national-selection or delegation-registration cutoff was verified.
The current regulations allow secondary students and eligible recent graduates who have not begun university. Graduation must not be earlier than the most recent graduation before July 1 of the competition year; special exceptions may be advised by the Steering Committee. Competitors must be under 20 on July 1, and either hold the represented country’s passport or have spent more than one academic year in its secondary education system. National selection can impose additional conditions.
US$3,000 is a national-team participation fee, not an individual student price. Delegations fund return travel and medical insurance; the host covers other organized-program expenses, including accommodation, under the regulations. Individual national subsidies were not verified.