Average IQ Japan

In 2023 and 2024, Japan is recognized as the smartest country in the world, with an impressive average IQ score of 106.5 and 106.48, respectively.

Discover more about the world's smartest countries on our 2023's smartest countries and 2024's smartest countries page.

Elon Musk or Bill Gates is smarter? Visit our Celebrity IQs page to learn.

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Why Japan?

Genetic Factors: Research suggests genetic predispositions play the main role in the intelligence levels observed.1

Education: Success in Japan's educational system is strongly influenced by the high intelligence of its populace, as supported by recent genetic research.2

Economy: Japan's culture of hard work, combined with high intelligence, leads to the creation of better and higher-quality products, significantly contributing to the economy.3


  1. Plomin, R., von Stumm, S. The new genetics of intelligence. Nat Rev Genet 19, 148–159 (2018). https://doi.org/10.1038/nrg.2017.104.
  2. Okbay, A., Wu, Y., Wang, N. et al. Polygenic prediction of educational attainment within and between families from genome-wide association analyses in 3 million individuals. Nat Genet 54, 437–449 (2022). https://doi.org/10.1038/s41588-022-01016-z.
  3. Magnier-Watanabe, R., Benton, C., Orsini, P., & Uchida, T. (2023). Predictors of subjective wellbeing at work for regular employees in Japan. International Journal of Wellbeing, 13(1), 36-58. https://doi.org/10.5502/ijw.v13i1.2177.


What is Average IQ Japan?
Average IQ in Japan is 106.5. Japan has the highest average IQ in the world.