People With the Highest IQ
What would it feel like to be one of the smartest people alive and spend your career working as a bouncer, or to solve problems that baffle entire universities while wrangling cattle in Montana? The individuals on this list achieved exceptional scores, but their lives make these numbers almost irrelevant.
IQ results get a lot of attention, but there is also significant misinformation about them. Many online lists say that celebrities have IQs of 160, 190, or even higher, but almost none of these claims are backed up by real, standardized tests. All this confusion often leads to the neglect of some truly impressive scores.
To really understand intelligence, it is important to distinguish between real test results and those that are just guesses or myths. So, let’s start by looking at people whose very high IQs we can actually prove.
Verified & Documented High IQ Scores:
Terence Tao (IQ 225-230)
Australian-born Terence Tao didn't just show early talent; he was auditing university-level math classes by age nine. He went on to become the youngest full professor in the history of UCLA. Rather than burning out, Tao revolutionized fields like number theory and partial differential equations, earning the Fields Medal - the mathematical equivalent of a Nobel Prize - in 2006.
Marilyn vos Savant (IQ 228)
Marilyn vos Savant gained fame after being listed in the Guinness Book of World Records for one of the highest IQ scores, reportedly 228 on older Stanford-Binet tests.
She later became more famous for her 'Ask Marilyn' column in Parade magazine, where she solved logic puzzles and answered questions from readers. A key moment in her career happened in 1990, when she solved the Monty Hall puzzle. Thousands of people, including hundreds of PhD mathematicians, wrongly insisted she was mistaken. Later, computer tests proved that she was right.
Christopher Hirata (IQ 225)
Like many others on this list, Christopher Hirata showed exceptional intelligence as a child. He won a gold medal at the International Physics Olympiad when he was 13. By age 16, he was working with NASA on Mars-related projects.
Hirata’s interest in cosmology and dark energy led him to become an astrophysicist. He later became a professor and received several international awards for his work on early galaxy formation and cosmology.
Christopher Langan (IQ 195-210)
Often called "the smartest man in America," the Montana-born Christopher Langan taught himself to read by age four and reportedly got a perfect score on the SAT. He has worked as a construction worker, cowboy, forest ranger, and bar bouncer, which is a striking contrast to his intellectual reputation.
Langan is also known for his concept of the Cognitive-Theoretic Model of the Universe (CTMU), which combines philosophy and mathematics. Though not widely accepted in academic circles, his work has both strong supporters and critics.
Kim Ung-yong (IQ 210)
Once praised by Guinness for the world's highest IQ (210), Kim Ung-Yong could read four languages by age three and solved difficult math problems on Japanese TV at five.
At eight, Kim began working with NASA, gaining further acclaim. In 1978, he returned to South Korea to pursue a more private academic life, eventually earning a PhD in civil engineering and focusing on teaching and research at Shinhan University. Kim has described the label of prodigy as 'a complex experience' - two quiet words that probably carry more weight than any IQ number ever could.
Sho Yano (IQ 200)
Yano showed his creativity early, composing music at age four and beginning college at age nine. He graduated from the University of Chicago at twelve - the youngest in school history. Later, he entered medical school directly, earning his degree from the Pritzker School of Medicine at twenty-one, making him one of the youngest doctors in the United States.
Evangelos Katsioulis (IQ 198-205)
Evangelos Katsioulis is a Greek doctor and psychiatrist who is a member of several high-IQ societies and academic groups. He has pursued research in medicine, philosophy and the effects of drugs on the mind, showing his interdisciplinary interests.
Rick Rosner (IQ 192-198)
Rick Rosner is also known for his high IQ and an unusual career path, like Christopher Langan. Before he became a television writer, he worked as a bouncer, a roller-skating waiter, and even a nude model. These jobs make his background stand out among people with high IQs.
Rosner later became known for television quiz shows and public discussions about intelligence testing.
A few more names deserve a mention: Michael Kearney, who holds a Guinness record as the world's youngest college graduate and whose IQ has been reported near 200; and Christopher Harding, an Australian who held the Guinness 'Smartest Man' title for over two decades before Marilyn vos Savant and whose name has since been almost entirely forgotten.
It's worth noting that most of these scores come from older test editions that used different standards than modern assessments. Today's recalibrated scales are far more compressed - a score above 160-180 is exceptional, and anything approaching 200 is almost unmeasurable.
The listed people are only those who have actually taken a test and achieved such high results. Statistically, given the number of people in the world, there are almost certainly others alive today with similar or even greater intelligence who have never taken a formal assessment. They are living ordinary lives and are not on any list.
This makes you wonder what we are really measuring when we try to rank genius. The historical figures below never took a test at all, yet few people would argue they do not belong in this conversation.
Historical Geniuses With Estimated Very High IQs
The IQ test was created in the early 20th century, with Alfred Binet's first version appearing in 1905. All of the people listed here either lived before that or did not take a test at all. Any IQ numbers linked to them are just guesses based primarily on their achievements and historical impact long after they died.
Albert Einstein
The most recognizable symbol of genius in popular culture. His theories of relativity changed the way we understand space, time, and gravity. Ironically, some of his teachers thought he was slow or unlikely to stand out because he was quiet and different, and he also failed his first university entrance exam.
Nikola Tesla
The Serbian-American inventor whose development of alternating current (AC) electrical systems and induction motors laid the foundation for the modern electrical grid. Despite helping electrify the modern world, Tesla died nearly penniless in a New York hotel room.
Isaac Newton
He formulated the laws of universal gravitation, invented calculus, and explained the mechanics of planetary motion. He did much of this work during a single retreat from Cambridge caused by the plague, which lasted less than two years. Newton was known for becoming so deeply absorbed in his work that he often forgot to eat.
Leonardo da Vinci
Painter of the Mona Lisa and The Last Supper, and simultaneously a scientist, anatomist, engineer, and inventor whose notebooks contained visionary designs for flying machines and armoured vehicles centuries ahead of their time.
Johann Wolfgang von Goethe
Author of Faust, the masterpiece of German literature, and a serious scientist who made significant contributions to plant morphology and colour theory - a rare combination of literary and scientific greatness in a single lifetime.
Other figures frequently cited among history's greatest minds include:
- William Shakespeare - His plays and writings remain among the most influential works in literary history
- Blaise Pascal - He built one of the world's first mechanical calculators at eighteen.
- Gottfried Wilhelm Leibniz - He invented calculus independently of Isaac Newton and pioneered the binary number system.
- John von Neumann - He laid the math, quantum and computing foundations that helped build the modern world.
- Marie Curie - The only person to win Nobel Prizes in two different sciences.
- John Stuart Mill - His documented childhood mastery of Greek, Latin, logic, and political economy by age twelve remains one of the most extraordinary cases of precocity on record.
History is full of extraordinary minds, and these are only some of the most famous examples. If we tried to explore every person who belongs on this list, the article itself would turn into a book.
25 Misattributed & Mythological IQ Scores
The internet is full of confident-sounding IQ claims about famous people that lack credible sources. Mensa has explicitly denied the membership of several celebrities listed in viral articles. The people below are intelligent and accomplished - but the specific numbers attached to their names are either unverified, disputed, or simply fabricated.
The Mythical 160 IQ
Here is perhaps the most telling detail: Albert Einstein, Stephen Hawking, Sylvester Stallone, Bill Gates, Ashton Kutcher, Quentin Tarantino, Dolph Lundgren, and Matt Damon are all said to have an IQ of 160 - a suspiciously round number repeated across different people and fields, suggesting these are myths, not genuine scores.
Neither Einstein nor Hawking ever took a modern standardized IQ test. Hawking was even asked once what his IQ was, famously replying:
“I have no idea what my IQ is. People who boast about their IQ are losers.”
In internet culture, 160 score has almost become shorthand for “genius,” which may explain why the exact same number appears attached to actors, physicists, billionaires, and athletes alike.
The Unverified Celebrity List
The remaining viral claims vary in their numbers but share the exact same problem: no named test, no administrator, no date, and zero original documentation.
The Hyper-Genius Claims: James Woods (180), Benjamin Netanyahu (180), Rowan Atkinson (178), Garry Kasparov (180-190), Bobby Fischer (180+).
Chess grandmasters such as Kasparov, Fischer and others are often said to have extremely high IQs. This shows how people tend to link top-level chess skills with nearly superhuman intelligence, even though there are no verified test scores to support this.
The Hollywood and Entertainment Elites: Lady Gaga (166), Marilyn Monroe (163–168), Cindy Crawford (154), Sharon Stone (154), Elon Musk (155–170), Snoop Dogg (147), Meryl Streep (143), Steve Martin (142), Madonna (140), Shakira (140), and Natalie Portman (140)
You might notice that most of these celebrity scores fall between 140 and 165. This range is the perfect spot for internet hoaxes - impressive enough to attract fans, but not so high that people instantly realize it’s fake.
The Case of William James Sidis (The Fake 250–300)
Let’s end with what might be the most famous fake IQ score, which is linked to William James Sidis. He was a child prodigy in the early 1900s who could read the New York Times at just 18 months old and spoke eight languages by the time he was eight. Many years after his death, articles began claiming his IQ was between 250 and 300. In truth, modern IQ scales don’t give any real meaning to scores above 200, and Sidis’s supposed score was just an estimate made by a biographer who looked at how quickly he learned as a child.
To sum up, whether we consider verified records, historical legends, or modern myths, it is important to keep in mind what IQ measures and what it does not.
IQ gives us a partial window into cognitive ability - emphasis on partial. It doesn't measure creativity, resilience, emotional depth, or the particular stubbornness it takes to spend decades on an unsolved problem. Terence Tao has all of those. So, apparently, does a former bouncer from Montana who built his own theory of the universe in his spare time.
The score is the least interesting thing about most of these people. It just happens to be the number that gets them on the list.
More useful resources:
» What Is IQ?» What Famous People Think About IQ?
» How Is IQ Measured? Understanding Average and High IQ Scores
» Is IQ Important?
» How to improve your cognition and brain function?
» What was Einstein's IQ?