The Brazilian International Olympiads (BIOs) are a series of international academic competitions organised by NOIC, created to bring high-quality Olympiad experiences to students from all around the world.

The project began in 2023 with the launch of the Brazilian Online Olympiads (OBOs), a national initiative designed to make academic Olympiads more accessible to Brazilian students. Building on the success of the OBOs, NOIC organized the first international editions of the OBOF and OBOFE in 2025, welcoming participants from many countries.

Now, in 2026, we are proud to introduce the Brazilian International Olympiads (BIOs), expanding this initiative into a diverse collection of subjects. The BIOs aim to inspire curiosity, reward academic excellence, and connect talented students across the globe through engaging and accessible competitions.

Held entirely online and free of charge, the BIOs are open to students of all backgrounds, whether they are taking their first steps in olympiads or are already experienced competitors. Designed by students, for students, they provide an opportunity to learn, challenge yourself, and become part of a growing international academic community.

We hope you enjoy participating in the BIOs and wish you the very best of luck!

Here you can find the general regulations valid for all BIOs and all relevant dates. Specific regulations for each BIO can be found below.

This year, we are organising the following BIOs (click for specific rules):

• BIOA: Astronomy (IOAA style)
• BIOArt: Arts
• BIOB: Biology (IBO style)
• BIOCh: Chemistry (IChO style)
• BIOEcon: Economics (theoretical exam+business case presentation)
• BIOEPh: Experimental Physics (online simulators)
• BIOI: Informatics (CF contest)
• BIOL: Linguistics (IOL style)
• BIOM: Mathematics (IMO level)
• BIOR: Robotics (team project design)
• BIOS: Sciences (IJSO style)