Olimpíada Nacional de Ciências (ONC)

The Olimpíada Nacional de Ciências (ONC) is a national science olympiad for primary and secondary school students in Brazil, covering multiple areas of science. It is organized under the Programa Ciência na Escola by major Brazilian scientific institutions and universities. The competition runs through multiple phases (first and second phase exams), with national results and a ceremony awarding medals to top participants.

Medals and national awards for medalists; certificates available via the ONC portal.

Students in primary (Ensino Fundamental) and secondary (Ensino Médio) school may participate; schools register to enter students.

Schools register participants via the ONC registration portal (teachers register their school through the official application link).