Canadian Mathematical Olympiad (CMO)

Organization: Canadian Mathematical Society

Quick Answer

Canadian Mathematical Olympiad (CMO) is a free STEM program run by Canadian Mathematical Society for high school students in grades 9–12. It takes place in person. Applications are due March 11, 2027. See the key facts table below for cost, eligibility, and application details, and always confirm specifics on the official program site.

Program Overview

A national proof-based math competition for top high school students in Canada, serving as a key step toward international math Olympiads.

The Canadian Mathematical Olympiad (CMO) is a national, proof-based mathematics competition organized by the Canadian Mathematical Society for top high school students in Canada. Held annually, the CMO features challenging problems in areas such as algebra, number theory, combinatorics, and geometry, and is designed to test deep problem-solving ability and mathematical creativity rather than routine calculation. Participation is by invitation only, typically based on strong performance in earlier contests such as the Canadian Open Mathematics Challenge (COMC) and the Canadian Mathematical Olympiad Qualifying Repêchage. The CMO plays a central role in selecting and training students who may represent Canada at the International Mathematical Olympiad (IMO). Students who participate gain experience with advanced mathematics, develop rigorous proof-writing skills, and strengthen their applications for competitive university programs in math, science, and engineering.

Program Details

Key facts about Canadian Mathematical Olympiad (CMO)
OrganizerCanadian Mathematical Society
CategorySTEM (Science, Technology, Engineering, Math)
FormatIn-Person
LocationVarious locations
CostFree
EligibilityGrades 9–12
Application deadlineMarch 11, 2027
CountryCA
Listing last updatedJuly 4, 2026

Frequently Asked Questions

How much does Canadian Mathematical Olympiad (CMO) cost?

Canadian Mathematical Olympiad (CMO) is completely free — there is no participation fee. Costs like travel or optional materials may still apply; check the official site for details.

What is the application deadline for Canadian Mathematical Olympiad (CMO)?

The application deadline is March 11, 2027. Always confirm on the program's official site, as dates can shift between cycles.

Who is eligible for Canadian Mathematical Olympiad (CMO)?

Canadian Mathematical Olympiad (CMO) is open to high school students in grades 9–12. Some programs have additional requirements (GPA, coursework, essays, or recommendations) — the full criteria are on the official site.

Is Canadian Mathematical Olympiad (CMO) online or in person?

Canadian Mathematical Olympiad (CMO) is an in-person program.

How do I apply to Canadian Mathematical Olympiad (CMO)?

Apply directly through Canadian Mathematical Society's official website. ExtracurricularHub links to the official application — we list and verify programs but don't process applications.

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Visit the official program website: Canadian Mathematical Society