List of mathematics competitions

Australia

• Australian Mathematics Competition

Bangladesh

• Bangladesh Mathematical Olympiad (Jatio Gonit Utshob)

Belgium

• Olympiade Mathématique Belge — competition for French-speaking students
• Vlaamse Wiskunde Olympiade) — competition for Dutch-speaking students

Brazil

• Olimpíada Brasileira de Matemática (OBM) — national competition open to all students from fifth grade to university
• Olimpíada Brasileira de Matemática das Escolas Públicas (OBMEP) — national competition open to public-school students from fifth grade to high school
• Olimpíada de Matemática do Grande ABC (OMABC) — competition for the Grande ABC region

Canada

• Canadian Mathematical Olympiad — competition whose top performers represent Canada at the International Mathematical Olympiad
• The Centre for Education in Mathematics and Computing (CEMC) based out of the University of Waterloo hosts long-standing national competitions for grade levels 7–12^[1][2]
• MathChallengers (formerly MathCounts BC) — for eighth and ninth grade students

France

• Concours général — competition whose mathematics portion is open to twelfth grade students

Hong Kong

• Hong Kong Mathematics Olympiad
• Hong Kong Mathematical High Achievers Selection Contest — for students from Form 1 to Form 3
• Pui Ching Invitational Mathematics Competition
• Primary Mathematics World Contest

Hungary

• Miklós Schweitzer Competition
• Középiskolai Matematikai Lapok — correspondence competition for students from 9th-12th grade

Indonesia

• National Science Olympiad (Olimpiade Sains Nasional) — includes mathematics along with various science topics

Kenya

• Moi National Mathematics Contest — prepared and hosted by Mang'u High School but open to students from all Kenyan high schools

Pakistan

• Inter School Maths Olympiad — organized nationwide by PakTurk International Schools and Colleges

Saudi Arabia

• KFUPM mathematics olympiad - organized by King Fahd University of Petroleum and Minerals (KFUPM).

Singapore

• Singapore Mathematical Olympiad (SMO) — organized by the Singapore Mathematical Society, the competition is open to all pre-university students in Singapore.

South Africa

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

United Kingdom

• Most competitions are organised by the UK Mathematics Trust.
• The Primary Mathematics Challenge (for primary school pupils) is organised by the Mathematical Association.
• The Junior Mathematical Challenge is a multiple-choice competition for students up to year 8 in England and Wales, year S2 in Scotland, year 9 in Northern Ireland. High scorers in the JMC are invited to compete in the Junior Mathematical Olympiad.
• The Intermediate Mathematical Challenge is a multiple-choice competition for students up to year 11 in England and Wales, year S4 in Scotland, year 12 in Northern Ireland. High scorers in the IMC are invited to compete in the Intermediate Mathematical Olympiad and Kangaroo (for the highest scorers) and in the European Kangaroo (another multiple-choice competition, for other high scorers).
• The Senior Mathematical Challenge (formerly National Maths Contest) is a multiple-choice competition for students up to year 13 in England and Wales, year S6 in Scotland, year 14 in Northern Ireland. High scorers in the SMC are invited to compete in the British Mathematical Olympiad.
• The UCL Maths Challenge is a competition for Year 6 primary school pupils from London organised by UCL student volunteers.

United States

Generally, registering for these contests is based on the grade level of math at which the student works rather than the age or the enrolled grade of the student. Also normally only competitions where the participants write a full proof are called Mathematical Olympiads.