American Mathematics Olympiad (AMO)
Open to all eligible students
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International Youth Math Challenge (IYMC)
First-round submission in Nov - Dec
International Teenagers’ Mathematics Olympiad (ITYM)
Open to all eligible students
SEAMO-X
Only for invitees from SEAMO winners
Southeast Asian Mathematical Olympiad (SEAMO)
Open to all eligible students
Singapore and Asian Schools Math Olympiad (SASMO)
Open to all eligible students