ABACUS International Math Challenge (Popularity: )

Monthly contest available in 3 age groups from 3rd grade to 8th grade.

Australian Primary Schools Mathematical Olympiads Inc. (Popularity: )

Open to primary schools in Australia, New Zealand and surrounding countries.

Math Olympiad Problems from Around the World (Popularity: )

In particular, from Iran.

Valentin Vornicu's MathLinks (Popularity: )

Math Olympiad Problem Solving site with a weekly contest, resembling IMO in difficulty, with a ...

Crux Mathematicorum with Mathematical Mayhem (Popularity: )

Problem-solving journal at the senior secondary and university undergraduate levels.

Mathematics Archives (Popularity: )

links to contests, problem sets, journals sites.

American Mathematics Competitions (Popularity: )

Organization that administers the AMC, the AIME, and the USAMO, with information about the contests, ...

Putnam Exam Information (Popularity: )

Results from the Putnam competition, old exams, and problem archives. Includes problem of the day, ...

Australian Mathematics Trust (Popularity: )

Sponsors a number of competitions in the Australian continent.

Madras College Mathematics Department Resources (Popularity: )

Assortment of materials including British Mathematics Olympiad papers and Mathematics Higher Course Notes.

Greg Martin (UBC) (Popularity: )

Syllabus and practice problems from Rajiv Gupta and Greg Martin's Putnam practice sessions.

Math Competitions in USA (Popularity: )

Sample problems, information and links from multiple contests.

Problem Solving References & Resources (Popularity: )

Overview of seminars oriented towards problem solving. Includes sample problem sets, list of online resources, ...

Problem Writing For Mathematics Competitions (Popularity: )

Mathematics problems for middle school and high school math competitions with topics range from algebra ...

Kalva (Popularity: )

Complete set of all International Mathematical Olympiad problems with solutions. Also includes problems sets from ...

AMATYC Student Math League (Popularity: )

Series of mathematical contests organized by The American Mathematical Association of Two-Year Colleges (AMATYC).

Math Olympiad for Elementary Schools (Popularity: )

Contest open to all students grade 8 to 4. Offers resources for students and school ...

Stanford Math Tournament (Popularity: )

Annual math event sponsored by the Stanford Mathematics Department. Site contains results, past tests and ...

Ravi Vakil (Stanford) (Popularity: )

Training resources for the Putnam competition. Practice problems, notes on mathematical theories, and recommended reading.

Bay Area Math Circle (Popularity: )

Features The Bay Area Mathematical Olympiad (BAMO) and weekly program for San Francisco Bay Area ...