OBIBrazilian Olympiad in Informatics
Registration – Programming category (reopened until 17/06 for Session B) · Mar 25 – Jun 17, 2026
2026–2030 calendar
Competition calendar
Tech competitions highlighted (⚡), science olympiads, hackathons and more. Filter by age and click an event for details.
⚡ Upcoming tech dates
48h HackathonsMLH GHWOnline hackathon weekNov 6–12, 2026happening now</> ProgrammingBebrasWorld-Wide Bebras Week of computational thinkingNov 9–13, 2026happening now🔐 CybersecurityCSAWCSAW Cybersecurity Games Global FinalsNov 12–14, 2026in 2 days48h HackathonsJunctionHackathon (48 h)Nov 13–15, 2026in 3 days
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Long registration periods appear only on the days they open and close.
This month's competitions
June 2026
4 dates
OBIBrazilian Olympiad in Informatics
Phase 1 (Local) – Programming category (Session A) · Jun 10–12, 2026
OBIBrazilian Olympiad in Informatics
Phase 1 (Local) – Programming category (Session B, alternative date) · Jun 18–19, 2026
OBIBrazilian Olympiad in Informatics
Phase 1 final results · Jun 26, 2026
Confirmed: official days · Month announced: days to be confirmed · Estimate: the month it is usually held, not announced yet · No forecast: date unknown.
Dates checked on the organizers' official websites and calendars (last review on November 6, 2026). They may change: always confirm on the official website before registering or traveling.