Highest IQ Child Prodigies in History — Ranked

The most extraordinary young minds ever documented.

1. Marnen Laibow-Koser

   1970–None · US
   268
2. Ainan Celeste Cawley

   1999–None · SG
   250
3. William James Sidis

   1898–1944 · US
   250
4. Michael Grost

   1954–None · US
   200
5. Michael Kearney

   1984–None · US
   200
6. Sho Yano

   1990–None · US
   200
7. Adragon Eastwood De Mello

   1976–None · US
   185

How we ranked this list

Scores draw from cited estimates in published biographies and psychometric literature. Historical IQ figures are reconstructions, not test results.