IMHO 2026

IMHO 2026 is an international mathematics olympiad with a national selection stage (USMHO) and an international exam. The USMHO has a registration deadline and an open exam window; top performers are ranked, receive medals, and may receive invitations to the IMHO international exam. The international exam is by invitation and has a scheduled single-day exam.

Rankings, medals, and invitations to the IMHO international exam.

Register on the official IMHO website before the registration deadline.