Hanoi Open Mathematics Competition (HOMC) was first organized in 2004 by the Hanoi Mathematical Society for Junior (Grade 8) and Senior (Grade 10) students. As the original regulation of HOMC, all questions, problems, and contestant’s presentation should be presented in English. From 2013 Hanoi Department of Education and Training became the co-organizer and promoted the competition as nationwide with nearly 1,000 contestants participated every year from 50 cities across the country.

From 2018, with the support of the Hanoi People’s Committee, the competition will open to international teams to participate by invitation only.