9. Albert Einstein – IQ 160-190

Interestingly enough, Albert Einstein never took an IQ test, which is why the 160-190 is mostly presumed by experts and scholars across the world. Known for his essential work in the field of theoretical physics, professor Einstein is viewed as not only one of the most influential physicists in history, but also as one of the smartest people who have ever lived. Famous for developing the theory of relativity, the word ‘Einstein’ has rightfully become synonymous with the word genius over the years.