Math Buddy: Problems for all Math Contest

International mathematics competitions

China Girls Mathematical Olympiad (CGMO) — olympiad held annually in different cities in

Interdisciplinary Contest in Modeling (ICM) — team contest for undergraduates

International Mathematical Modeling Challenge

International Mathematical Olympiad (IMO)

(IMC) — international competition for undergraduate students.

Mathematical Contest in Modeling (MCM) — team contest for undergraduates

Mathematical Kangaroo — worldwide competition.

Mental Calculation World Cup — contest for the best mental calculators

Primary Mathematics World Contest (PMWC)

Regional mathematics competitions

Asian Pacific Mathematics Olympiad (APMO) — Pacific rim

Balkan Mathematical Olympiad — for students from Balkan area

Baltic Way — Baltic area

European Girls' Mathematical Olympiad (EGMO)

ICAS-Mathematics (formerly Australasian Schools Mathematics Assessment)

Mediterranean Mathematics Competition.

Nordic Mathematical Contest (NMC) — the five Nordic countries

North East Asian Mathematics Competition (NEAMC) — North-East Asia

SEAMEO Mathematics Olympiad (SEAMEO) — South-East Asia

South East Asian Mathematics Competition (SEAMC) — South-East Asia

William Lowell Putnam Mathematical Competition — United States and Canada

Australian Mathematics Competition

Bangladesh Mathematical Olympiad

MathChallengers (formerly MathCounts BC) — for eighth and ninth grade students

Hong Kong Mathematics Olympiad

Hong Kong Mathematical High Achievers Selection Contest — for students from Form 1 to

Pui Ching Invitational Mathematics Competition

Primary Mathematics World Contest

National Secondary School Academic Competition - Mathematics

Indonesia

National Science Olympiad (Olimpiade Sains Nasional)

KFUPM mathematics olympiad

Singapore

Singapore Mathematical Olympiad (SMO)

University of Cape Town Mathematics Competition — open to students in grades 8 through 12 in the Western Cape province.

The Primary Mathematics Challenge (for primary school pupils) is organised by the Mathematical Association.

National elementary school competitions (K–5) and higher

Math League (grades 4–12)

Mathematical Olympiads for Elementary and Middle Schools (MOEMS)

National middle school competitions (grades 6–8) AND lower/higher

American Mathematics Contest 8 (AMC->8), formerly the American Junior High School Mathematics Examination (AJHSME)

Math League (grades 4–12)

Mathematical Olympiads for Elementary and Middle Schools (MOEMS)

Rocket City Math League[1] (pre-algebra to calculus)

United States of America Mathematical Talent Search (USAMTS)

National high school competitions (grade 9–12) AND lower

American Invitational Mathematics Examination (AIME)

American Mathematics Contest 10 (AMC->10)

American Mathematics Contest 12

Mathematics Examination (AHSME)

American Regions Mathematics League (ARML)

Harvard-MIT Mathematics Tournament (HMMT)

High School Mathematical Contest in Modeling (HiMCM)

Mandelbrot Competition

Math League

Math-O-Vision

United States of America Mathematical Olympiad (USAMO)

United States of America Mathematical Talent Search (USAMTS)

Rocket City Math League (pre-algebra to calculus)

AMATYC Mathematics Contest

Mathematical Contest in Modeling (MCM)

William Lowell Putnam Mathematical Competition