Who has the highest IQ in the world 2020? The person with the highest IQ score in the world is American magazine columnist Marilyn vos Savant, 74, according to the Guinness Book of Records. She has an IQ of 228. Copyright 2021 WDRB Media.
Whos the smartest person in the world 2020? San Francisco, California, U.S. Christopher Michael Langan (born March 25, 1952) is an American horse rancher and autodidact who has been reported to score very highly on IQ tests.