Canadian Mathematical Olympiad & Junior Olympiad

The Canadian Mathematical Olympiad (CMO) and Canadian Junior Mathematical Olympiad (CJMO) are national mathematics competitions organised by the Canadian Mathematical Society. Participation is by invitation, with roughly 75–100 students invited to the CMO and up to 20 to the CJMO each year. Invitations are determined primarily from performance on the Canadian Open Mathematical Challenge (COMC) and a Repêchage take-home qualifying round. The programs identify top high-school mathematics students and select teams for international competitions.

There is no participation fee; travel or optional materials may still apply.

Participation is by invitation from the Canadian Mathematical Society, typically based on performance in the Canadian Open Mathematical Challenge (COMC), Repêchage, and certain provincial competitions; CJMO invitations are for students in grade ten or less. Anyone invited to the CMO is not invited to the CJMO.

Students are invited based on results from the COMC, the Repêchage (a take-home qualifying exercise), top performers in certain provincial contests, and selection for international teams; there is no general open application.