The following countries have offered to host the International Olympiad on Astronomy and Astrophysics in future years. Three of these have confirmed their intentions with official letters of support from the Ministry of Education or equivalent body; we are awaiting confirmation from the remainder. The list of hosts remains open beyond 2024.
14th IOAA (2020) Bogota, Colombia
15th IOAA (2021) Ukraine
16th IOAA (2022) St. Petersburg, Russia
17th IOAA (2023) Kazakhstan
18th IOAA (2024) Minsk, Belarus