United States of America Junior Mathematical Olympiad

USAJMO is an invitation-only, proof-based national mathematics olympiad for top younger participants in the Mathematical Association of America competition pathway. Qualification combines AMC 10 and AIME performance. In 2026, approximately 600 students across USAMO and USAJMO were invited to 31 official sites in the United States and Canada. Competitors solved six proof problems over two days—three problems in each 4.5-hour session—on March 21–22, creating a nine-hour examination experience aligned with the international olympiad format.