The registration system is now online! If you would like to register your country and participants via fax request the registration forms from the IChO Office:

Proceed to Online Registration

Please note that the following deadlines apply to the registration procedure.
April 1st 2009: Country registration
May 1st 2009: Mentor and Scientific observer registration
June 1st 2009: Student registration
June 15th 2009: Travel details
June 15th 2009: Guest registration
June 15th 2009 Term of payment

If you are looking to apply to join the IChO then download the following files.

Olympiad Application Procedure

IChO Questionnaire