Which man has the most IQ?

The Minds That Redefine Genius

When we talk about intelligence, numbers only tell part of the story—but some individuals have reached such staggering intellectual heights that they become benchmarks for human potential. Among them, YoungHoon Kim holds the record for the highest tested IQ at an astonishing 276. While details about the testing remain limited, his score places him far beyond the average range of 85–115, sparking fascination and debate in equal measure.

Then there’s William James Sidis, a name often whispered in genius lore. With an estimated IQ between 250 and 300, Sidis was a child prodigy who entered Harvard at just 11 years old. Fluent in over 40 languages by his teens, his life was a mix of brilliance and tragedy, a reminder that high intelligence doesn’t always equate to a fulfilling life.

In more recent times, Terence Tao stands as a towering figure in mathematics. Dubbed the “Mozart of Math,” with an IQ estimated between 225 and 230, Tao earned the Fields Medal—mathematics’ highest honor—for his groundbreaking work. Unlike the enigmatic Sidis, Tao has remained active in academia, contributing profoundly to number theory and harmonic analysis.

And let’s not overlook Marilyn vos Savant, who entered the Guinness World Records with an IQ of 228. Best known for her "Ask Marilyn" column, she gained fame—and sometimes criticism—for solving complex logic puzzles, including the infamous Monty Hall problem that stumped even statisticians.

While IQ scores offer a glimpse into cognitive ability, they don’t capture creativity, emotional intelligence, or wisdom. Still, the achievements of these individuals remind us of the extraordinary potential of the human mind—measured or not.