ILO 2026
Engage in global logic questions and critical-thinking rounds with real-world recognition
The International Logic Olympiad (ILO) is a global academic competition that challenges students in logical reasoning, critical thinking, and structured problem-solving.
Open to students aged 11–18, ILO provides an opportunity to benchmark thinking skills against international standards. Students participate in regional preliminary rounds, and top performers advance to the international final round, which is held on campus at Stanford University.
The competition focuses not on memorisation, but on the ability to analyse, reason, and solve complex problems systematically — skills that are highly valued in secondary education and beyond.
Focus
Global prestige & partnership with Stanford
International logic competition hosted annually in partnership with Stanford University, drawing thousands of students from 90+ countries and offering globally recognized challenges and experiences.
Develop real analytical and reasoning skills
Participants tackle logic and reasoning problems rooted in set theory and symbolic reasoning, strengthening critical thinking that supports success across academics and future careers.
Multi‑stage competition with international finals
Students first compete in online preliminary rounds and top performers advance to an on‑campus final round at Stanford University, celebrating top achievers and awarding winners on a global stage.
Highlights
Junior Division
Be between the ages of 11-14 by January 1st 2026
Senior Division
Be between the ages of 14-18 by January 1st 2026
