You cannot apply directly to the international IMO as an individual. Your country’s recognised programme selects its delegation. Your first task is therefore to find the right national competition and its entry conditions.
1. Find the national organiser
Use our country guides or the official IMO delegation directory. Similar names can refer to different competitions. Check that the organiser describes a route to the International Mathematical Olympiad.
2. Check the first round you can enter
Look for the permitted school years, date-of-birth range, residence or citizenship conditions, application method, fee and deadline. Some countries use school registration; others permit individual entry. A country may also have invitation exceptions or separate junior categories.
3. Read the whole selection route
A strong first-round score usually leads to further assessment. Later stages may include proof exams, training camps, homework or team-selection tests. Selection can run across two calendar years. Do not assume that winning a national prize guarantees a place in the international delegation.
4. Prepare for the next examination
Use the official syllabus and a released paper from the stage you are entering. Check whether answers are multiple choice, numerical or complete proofs. Our topic map explains the broader mathematics, and the country paper directory helps you find the right practice material.
5. Recheck after qualifying
Read the next-round notice promptly. Qualification may require a separate registration, document check or acceptance of an invitation. Keep the organiser’s messages and proof of registration.
Studying abroad or considering another country?
Open entry to a contest and eligibility to represent a country are separate questions. Start with the international eligibility rules and then ask the recognised national organiser about your circumstances. Never assume that paying for an overseas contest creates national-team eligibility.
Need help finding an entry route?
Help for missing country instructions, non-participating schools and cross-border students