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Register or find your IMO observer code

Don't worry if you think you already have an IMO observer code. We will check the database for existing registrations in the next step and let you know! If you already know your IMO observer code, then click here to request a password.

First names and optionally also the middle name. All characters from the extended latin alphabet may be used. For other alphabets, use the English transcription (but avoid nicknames).
Last name(s). Again, only characters from the extended latin alphabet should be used.