Past IChO Editions

IChO History (2018–2025)

Explore the recent editions of the International Chemistry Olympiad.

  1. 2025 • 57th IChO

    United Arab EmiratesJuly 5 – July 14
    United Arab Emirates

  2. 2024 • 56th IChO

    Saudi ArabiaJuly 21 – July 30
    Saudi Arabia

  3. 2023 • 55th IChO

    SwitzerlandJuly 16 – July 25
    Switzerland

  4. 2022 • 54th IChO

    ChinaJuly 8 – July 18 (remote)
    China

  5. 2021 • 53rd IChO

    JapanJuly 25 – August 2 (remote)
    Japan

  6. 2020 • 52nd IChO

    TurkiyeJuly 6 – July 15 (remote)
    Turkiye

  7. 2019 • 51st IChO

    FranceJuly 21 – July 30
    France

  8. 2018 • 50th IChO

    Slovakia & Czech RepublicJuly 19 – July 29
    Slovakia & Czech Republic