Welcome to the International Junior Science Olympiad (IJSO). IJSO 2026 will be held in Sofia, Bulgaria, as the next IJSO. The registration link will be open from 1st August to 31st August 2026.

IJSO 2026 Bulgaria Latest Updates

IJSO 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

Executive Committee Meeting

Photos taken during the period of EC meeting in April 2015

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