Dec 26 IJSO 2024 at Romania Jan 28 IJSO 2023 at Thailand May 28 IJSO 2022 at Colombia Dec 07 IJSO 2021 at Dubai 18th International Junior Olympiad will be held in Dubai, Dec 04 IJSO 2019 at Qatar 16th International Junior Olympiad was held in Qatar Dec 04 IJSO 2018 at Botswana 15th International Junior Olympiad was held in Botswana Dec 26 IJSO 2024 at Romania Jan 28 IJSO 2023 at Thailand May 28 IJSO 2022 at Colombia Dec 07 IJSO 2021 at Dubai 18th International Junior Olympiad will be held in Dubai, Dec 04 IJSO 2019 at Qatar 16th International Junior Olympiad was held in Qatar Dec 04 IJSO 2018 at Botswana 15th International Junior Olympiad was held in Botswana IJSO 2016 at Indonesia 13th International Junior Olympiad was held in Indonesia IJSO 2017 at Netherland 14thInternational Junior Olympiad was held in Netherland IJSO 2018 at Botswana 15th International Junior Olympiad was held in Botswana IJSO 2019 at Qatar 16th International Junior Olympiad was held in Qatar IJSO 2021 at Dubai 18th International Junior Olympiad will be held in Dubai, IJSO 2022 at Colombia IJSO 2016 at Indonesia 13th International Junior Olympiad was held in Indonesia IJSO 2017 at Netherland 14thInternational Junior Olympiad was held in Netherland IJSO 2018 at Botswana 15th International Junior Olympiad was held in Botswana