What does it really mean to be the smartest person in the world? Is it the highest IQ score, a revolutionary thinker who changes our view of the universe, or something more—creativity, emotional intelligence, and the ability to solve the impossible?
Names like Albert Einstein, Isaac Newton, and Stephen Hawking are synonymous with genius. Their groundbreaking contributions to science and philosophy have cemented their places as some of history's brightest minds. And what about all the modern tech giants, who have accomplished so much?
But does that make them the smartest? Not necessarily.
In fact, there are modern prodigies and historical figures whose IQs surpass even Einstein and Newton. Think of Dr. Younghoon Kim (who currently holds the Official World Record® for the title “The World’s Highest IQ Person Now”), Terence Tao, and Marilyn vos Savant—whose intellectual feats challenge the limits of human achievement. But IQ alone doesn’t define brilliance. Creativity, emotional intelligence, and practical problem-solving are just as important.
So, who really holds the title of the smartest person? Based on exceptional achievements, verified IQ scores, and estimated figures, here’s a look at some of the brightest minds in history and today.
Related: Can I Have a High IQ and Make Dumb Decisions?
42 of the Smartest People in the World: Geniuses with Super High IQs
The idea of the "smartest person in the world" is something that’s always intrigued people, but it’s tough to pin down. After all, intelligence isn’t just one thing. Is it about the raw numbers of IQ tests? The way someone changes the world with their ideas? Or the ability to solve problems that no one else can?
Here, we’ve put together a list of some of the most brilliant minds ever, from IQ geniuses to visionaries whose impact is undeniable.
But we also want to acknowledge that the way we measure intelligence isn’t always perfect—there are plenty of incredible people who never had their IQs tested or who didn’t focus on academic metrics (are you one of them). So, this is less about who’s the absolute "smartest" and more about appreciating different types of brilliance.
Who Has the Highest IQ Score? 3 Smartest People in the World (with IQ Tests!)
Determining the smartest person based on verified IQ scores is pretty straightforward, but it’s worth noting that public records with scores this high tend to get a lot of attention. The individuals in our top 3 have scores so impressive that it’s nearly impossible not to hear about them.
While it’s clear who stands out based on objective IQ numbers, it’s important to remember that true intelligence isn’t just about test results—what someone does with that knowledge and how they apply it to change the world is just as important.
IMPORTANT NOTE: This top 3 is based on individuals with publicly documented IQ scores from actual tests. As you'll see in the next section, there are others with higher reported or estimated IQ scores—excluding Dr. YoungHoon Kim who currently holds the "title" of highest IQ in the world.
1. Dr. YoungHoon Kim – South Korean Intelligence Specialist: Recorded IQ of 276
As of 2024, Dr. Younghoon Kim holds the title of the smartest person in the world, with the highest verified IQ of 276. This remarkable score was confirmed in 2024—recognized by both the World Memory Championships and the World Mind Sports Council. Dr. Kim’s IQ was tested through a series of rigorous challenges, including memory and problem-solving tasks, securing his place as one of the most intellectually gifted individuals globally.
Beyond his exceptional IQ, Dr. Kim is also a leader in intelligence research. His work in cognitive science has had a lasting impact on both academic theory and practical applications in memory, reasoning, and IQ testing. As President of the Universal Society of Intelligence, he continues to influence modern discussions on human cognition and memory sports, helping to redefine the boundaries of intelligence.
2. Terence Tao – Australian-American Mathematician and Child Prodigy: Recorded IQ of 230
Following Dr. Younghoon Kim, Terence Tao stands as one of the smartest people in the world with a verified IQ of 230. Known as the "Mozart of Math," Tao’s intellectual brilliance became evident at a very young age when he began solving complex mathematical problems. By 21, he had earned his Ph.D., and his work continues to shape modern mathematics.
Tao has made groundbreaking contributions across mathematical fields, including partial differential equations, harmonic analysis, and combinatorics. His co-development of the Green-Tao theorem, which proved the existence of infinite arithmetic progressions of prime numbers, earned him the Fields Medal in 2006—the equivalent of a Nobel Prize in mathematics. Now a Professor of Mathematics at UCLA, Tao remains a leading figure in mathematics, advancing research while mentoring the next generation of mathematicians.
3. Marilyn vos Savant – American Columnist and Intellectual Icon: Recorded IQ of 228
Marilyn vos Savant achieved an IQ of 228 as a child, earning the title of "Highest IQ" in the Guinness Book of World Records in 1985—a title she held until the category was retired in 1989. Her name is still often linked to the highest IQ, largely due to the lasting impact of her Guinness record, though she is now recognized as having the third highest IQ based on recorded test scores. Despite the unsupervised nature of her Stanford-Binet test and the controversy surrounding it, her intellectual achievements remain widely respected.
Vos Savant became a household name through her "Ask Marilyn" column in Parade magazine, where she answered complex questions on subjects like logic, mathematics, and philosophy. Her ability to solve difficult problems and communicate ideas made her a respected figure in intellectual circles. Beyond puzzles, her focus on critical thinking and logical reasoning has left a lasting impact on intelligence theory and the broader field of problem-solving.
However, despite her extraordinary IQ, vos Savant's most prominent legacy remains her public column, books, and intellectual commentary rather than groundbreaking contributions to science or technology. Her career highlights that a high IQ doesn't always translate into world-altering innovations or groundbreaking discoveries, yet she remains an influential voice in intellectual discourse.
Smartest People with the Highest IQ Scores: Meet More of the World's Brilliant Minds
Now that we've looked at the top 3 with verified IQs, it’s time to broaden the scope a bit. In this section, we’re diving into a mix of reported, estimated, and verified IQ scores—including some names you might recognize. These are people who’ve changed the world with their brilliant minds, and while not all of them have had their IQs formally tested, their impact speaks for itself.
We’ve set a cutoff score of 180, and while this list doesn’t cover everyone with a high IQ, it highlights some of the most influential figures across history, from past innovators to modern-day visionaries.
4. William James Sidis – American Child Prodigy and Mathematician: Estimated IQ of 275
William James Sidis' IQ is estimated to be between 250 and 300, making him one of the most intelligent individuals in recorded history. While no official test results exist, this estimate is based on his astounding intellectual abilities, as noted by psychologists such as Abraham Sperling. If we had actual IQ test results, Sidis would have made our top 3 smartest people!
A child prodigy, Sidis could read The New York Times at age two and mastered multiple languages by age six. At just 11 years old, he enrolled at Harvard University, where he excelled in mathematics and philosophy. His intellect extended far beyond academics—he had a photographic memory and developed his own constructed language, "Vendergood."
However, intense media scrutiny and societal pressures led him to withdraw from public life, working in low-profile jobs despite his vast intellectual potential. His remarkable IQ and abilities did not lead to the groundbreaking career or world-changing contributions many expected, as he lived much of his adult life in relative obscurity. He passed away in 1944 at age 46, with much of his potential untapped.
5. Marnen Laibow-Koser – American Composer, Multi-Instrumentalist, and Web Developer: Reported IQ of 268
Marnen Laibow-Koser's IQ is reported to be 268, though official test records aren’t widely available. His incredible intellect is evident in both his musical achievements and his technical expertise across multiple disciplines. Again, it is only because we do not have an actual verified IQ test score that Koser is not in our top 3.
A gifted composer and multi-instrumentalist, Laibow-Koser began composing at just three years old and mastered several instruments, including flute, viola, and piano. He earned a Master of Music degree in Contemporary Improvisation from the New England Conservatory. In addition to his musical talents, he has excelled in web development and software engineering, blending artistic creativity with technical precision.
6. Carl Friedrich Gauss – German Mathematician and Pioneer of Number Theory: Estimated IQ of 250
Carl Friedrich Gauss' IQ is estimated to be between 250 and 300, making him one of the greatest minds in mathematics. Though no official IQ test existed during his time, his ability to solve complex equations and develop revolutionary theories clearly suggests an incredible intellect.
Known as the "Prince of Mathematics," Gauss made foundational contributions to number theory, famously proving the fundamental theorem of algebra and laying the groundwork for many modern mathematical principles. His Gaussian distribution, also known as the normal distribution, remains a cornerstone in probability and data analysis today. Interestingly, Gauss' work plays a critical role in the way IQ scores are distributed in populations (among other things). Gauss also contributed to algebra, geometry, and statistics, and his work helped shape the future of physics and astronomy, influencing fields that continue to evolve today.
7. Johann Wolfgang von Goethe – German Writer, Scientist, and Philosopher: Estimated IQ of 215
Johann Wolfgang von Goethe's IQ is estimated to be between 210 and 225, based on his profound contributions across literature, science, and philosophy. While no standardized IQ tests were available during his time, his remarkable intellect and influence on multiple fields make it clear that he was a polymath of amazing ability.
Best known for Faust and The Sorrows of Young Werther, Goethe was more than just a literary icon—he was a true polymath. His work in natural sciences, color theory, botany, and early evolutionary studies influenced generations of thinkers. He even founded human chemistry as a scientific concept and conducted groundbreaking research on plant morphology and optics. His rare ability to merge artistic creativity with scientific exploration makes him one of history’s most versatile intellectuals.
8. Christopher Hirata – Japanese-American Astrophysicist and Child Prodigy: Recorded IQ of 225
Christopher Hirata’s IQ is verified at 225, based on high-range intelligence tests conducted during his youth. His exceptional intellect was recognized early, which led to groundbreaking academic achievements at a remarkably young age.
At just 13, Hirata won a gold medal at the International Physics Olympiad, becoming the youngest ever to do so. By 16, he was already working with NASA on Mars colonization projects. Hirata graduated from Caltech at 18 and earned his Ph.D. in physics from Princeton at 22. His pioneering research on dark matter, dark energy, and gravitational lensing has contributed significantly to astrophysics, shaping our understanding of the universe.
9. K. Visalini – Indian Prodigy and Technology Record-Holder: Recorded IQ of 225
At 24 years old (born May 23, 2000), K. Visalini is one of the world’s brightest minds, with a verified IQ of 225. She holds impressive records, including being the youngest person to earn both CCNA and EXIN cloud computing certifications, showcasing her exceptional talent in technology.
Currently pursuing a Master’s degree in Psychology at Indira Gandhi National Open University, Visalini’s academic journey bridges the worlds of technology and psychology. Her intellectual brilliance has already made her a standout figure, and with her ongoing work and studies, it will be exciting to see how she continues to innovate in both fields in the years to come.
10. Leonardo da Vinci – Italian Painter, Polymath, and Inventor: Estimated IQ of 220
Leonardo da Vinci’s IQ is estimated to be between 200 and 220, based on retrospective analyses of his vast intellectual achievements. Though no formal IQ tests existed in his time, his mastery of multiple disciplines and groundbreaking innovations suggest a mind far ahead of his era.
Often called the ultimate "Renaissance Man," da Vinci excelled in art, engineering, anatomy, mathematics, and invention. His iconic paintings, including the Mona Lisa and The Last Supper, remain among the most celebrated in history. Beyond art, he conceptualized flying machines, armored vehicles, and early designs for parachutes and submarines, centuries before they became reality. His ability to blend science and creativity made him one of the most visionary minds in human history.
11. Kim Ung-Yong – South Korean Child Prodigy and Civil Engineer: Recorded IQ of 210
Kim Ung-Yong's IQ is verified at 210, recorded on the Stanford-Binet Intelligence Scale, which earned him a spot in the 1978 Guinness Book of World Records for having the highest recorded IQ at the time. Recognized early for his exceptional cognitive abilities, Kim demonstrated his intellect through test scores and public appearances.
Born in 1962 in Seoul, South Korea, Kim was speaking full sentences by six months old and reading multiple languages by age three. By four, he was solving calculus problems on Japanese television, and at seven, he was invited to work with NASA. He later studied nuclear physics at the University of Colorado before choosing to focus on civil engineering, where he earned a Ph.D., published over 90 research papers, and now serves as a faculty member at Chungbuk National University.
Despite his remarkable early achievements, Kim decided to step away from the intense public scrutiny and the pressure to achieve groundbreaking feats. He chose to prioritize happiness and a more balanced life, leading to a quieter career in academia. Kim’s decision highlights that even the most extraordinary intellects can find fulfillment in leading an "ordinary" life, and his respected position in academia reflects the lasting impact of his work beyond fame.
12. William Shakespeare – English Playwright and Poet: Estimated IQ of 210
William Shakespeare's IQ is estimated to be between 210 and 220, based on analyses of his literary genius, linguistic mastery, and profound impact on the English language. While no formal IQ test existed in his time, scholars assess his intellect based on the complexity of his works and his unmatched command of storytelling, poetry, and human psychology.
Regarded as the greatest writer in the English language, Shakespeare authored 39 plays, 154 sonnets, and numerous poems, shaping literature and drama for centuries. His works, including Hamlet, Macbeth, and Romeo and Juliet, reveal a deep understanding of philosophy, politics, and human nature, while coining over 1,700 new words and phrases still in use today. His influence on storytelling and the evolution of modern English is unparalleled.
13. James Clerk Maxwell – Scottish Physicist and Founder of Electromagnetic Theory: Estimated IQ of 205
James Clerk Maxwell's IQ is estimated between 190 and 205, based on his groundbreaking contributions to physics and mathematics. While no IQ tests existed during his time, his early achievements and profound influence on modern science reflect a superior intellect.
Known as the "Father of Electromagnetism," Maxwell developed the Maxwell Equations, unifying electricity, magnetism, and light into a single theoretical framework. His work laid the foundation for modern physics, influencing Einstein's theory of relativity and quantum mechanics. By 16, he had already published advanced mathematical papers, and his research also extended into thermodynamics, statistical mechanics, and the kinetic theory of gases. Maxwell's discoveries continue to shape fields like radio waves and wireless communication.
14. Gottfried Wilhelm Leibniz – German Mathematician and Philosopher: Estimated IQ of 205
Gottfried Wilhelm Leibniz's IQ is estimated between 182 and 205, based on his pioneering work in mathematics, logic, and philosophy. Gottfried Wilhelm Leibniz's IQ is estimated between 182 and 205, based on his pioneering work in mathematics, logic, and philosophy. While no IQ test existed during his time, his independent development of calculus and wide-ranging contributions to science and thought show just how brilliant his mind was.
Leibniz is best known for co-developing calculus independently of Isaac Newton, with his notation still used in modern mathematics. His work extended into logic, metaphysics, and engineering, including designing an early mechanical calculator. His philosophical ideas on monads shaped Enlightenment thinking, and his contributions to binary number systems laid the foundation for modern computing. Leibniz's ability to merge abstract thought with practical innovation secured his place as one of history’s greatest minds.
15. Sho Yano – American Prodigy and Physician: Reported IQ of 200
Sho Yano's IQ is reported to be 200, based on publicly available reports of his exceptional cognitive abilities, which were first noticed during his childhood when he began reading at age 2 and solving complex mathematical problems before his teenage years. By 8, Yano had graduated from college with a degree in biochemistry, and by 21, he had earned his medical degree from the University of Chicago, launching a successful career in medicine.
As of 2025, Yano is ranked 5th by the GIGA Society, an organization that uses a unique set of criteria for measuring intelligence. While their ranking system differs from the one used here, Yano's place in their top minds list speaks to the broad recognition of his extraordinary intellect. His continued contributions to medicine and research, alongside his impressive educational milestones, make him an influential figure in the field of intellectual achievement.
16. Hugo Grotius – Dutch Jurist and Father of International Law: Estimated IQ of 200
Hugo Grotius' IQ is estimated to be 200 (with some higher estimates of 210), based on his groundbreaking legal theories and profound influence on international law. While no formal IQ test existed in his time, his intellectual contributions suggest an extraordinary level of reasoning and scholarship.
A child prodigy, Grotius entered Leiden University at just 11 and became a practicing lawyer by 16. His most famous work, The Rights of War and Peace (1625), laid the foundation for modern international law, influencing principles still used in diplomacy, human rights, and warfare ethics. Beyond law, Grotius was also a theologian, historian, and poet, combining legal brilliance with philosophical depth. His writings continue to shape global legal studies today.
17. Thomas Wolsey – English Statesman and Chief Minister to Henry VIII: Estimated IQ of 200
Thomas Wolsey's IQ is estimated to be between 200 and 210, based on his political acumen, strategic diplomacy, and legal expertise. Though no formal IQ test existed in his time, his ability to navigate the complexities of Tudor politics and shape national policy reflects a formidable intellect.
Born the son of a butcher, Wolsey rose to become Lord Chancellor of England and chief advisor to Henry VIII, wielding significant influence over both foreign and domestic affairs. He played a key role in legal and administrative reforms, expanding the power of the monarchy and modernizing England’s governance. While he eventually fell from favor, his legacy as one of Tudor England’s most brilliant political minds endures.
18. Edith Stern – American Engineer and Inventor: Reported IQ of 200
Edith Stern's IQ is reported to be 200, based on documented assessments of her outstanding cognitive abilities from an early age. Her talents were recognized through rigorous testing, making her one of the most notable high-IQ individuals in modern history.
A child prodigy, Stern was reading encyclopedias by two and performing college-level mathematics by six. By her early teens, she entered academia and later became an engineer and inventor, holding over 100 patents in computer technology and artificial intelligence. Her innovations have significantly advanced modern computing, and she remains a leading figure in STEM fields today.
19. Michael Kearney – American Record-Breaking Child Prodigy and Educator: Reported IQ of 200
Michael Kearney's IQ is reported to be 200, based on documented assessments and his extraordinary academic achievements from early childhood. His intelligence was formally recognized through standardized testing, solidifying his place as one of the most exceptional prodigies in modern history.
Kearney became the youngest person to ever graduate college, earning his first degree at just 10 years old. By his early teens, he had completed multiple degrees in anthropology and computer science. Known for his exceptional memory and rapid learning ability, he won game show competitions and pursued careers in teaching and research. His academic milestones continue to stand as some of the most astonishing records in education.
However, despite his prodigious intellect, Kearney’s journey hasn’t been without its struggles. As an individual with such remarkable bilities, he often faced the pressure of living up to expectations, both academically and socially. These challenges, compounded by his early exposure to fame, demonstrate that exceptional intelligence doesn’t always shield individuals from the complexities of personal and emotional growth. It serves as a reminder that intellectual brilliance comes with its own unique set of hurdles.
20. Nikola Tesla – Serbian Inventor and Visionary: Estimated IQ of 200
Nikola Tesla's IQ is estimated to be 200, based on his extraordinary contributions to electrical engineering and his innovative ideas in energy and electromagnetism. While no formal IQ test was conducted during his lifetime, his groundbreaking inventions—such as the alternating current (AC) power system and the Tesla coil—had a profound and lasting impact on modern technology.
Tesla’s intellectual legacy extends beyond electricity; his ideas on wireless communication, energy transmission, and electromagnetic fields were far ahead of their time. His visionary work paved the way for modern radio and television, and his theories continue to inspire technological advancements today. Tesla’s genius transformed industries and left an indelible mark on the world.
21. Evangelos Katsioulis – Greek Psychiatrist and Founder of High-IQ Societies: Recorded IQ of 198
Evangelos Katsioulis' IQ is officially verified at 198, based on documented high-range intelligence tests. His exceptional cognitive abilities have placed him among the highest IQ individuals in the world.
A psychiatrist, medical doctor, and researcher, Katsioulis holds degrees in medicine, philosophy, and psychopharmacology. He is best known for founding the World Intelligence Network (WIN) and the International High IQ Society (IHIS), both organizations that connect high-IQ individuals worldwide. His work focuses on human cognition, intelligence measurement, and mental health, contributing to the scientific understanding of intelligence and its applications.
22. Christopher Harding – British Intellectual: Reported IQ of 197
Christopher Harding’s IQ is reported to be 197, based on his score on the Stanford-Binet test, though it has not been officially verified by academic institutions. In 1966, he was listed in the Guinness Book of World Records as "The Smartest Man in the World," a title he held until Marilyn vos Savant surpassed it. In 2024, the GIGA Society recognized Harding as one of the highest IQs (#7 on their list).
Although Harding is well-known in high-IQ circles, his public accomplishments haven’t reached the same level of influence as some others on this list. In 1974, he founded the International Society for Philosophical Enquiry, one of the oldest high-IQ societies. Despite his exceptional intellect, Harding chose a quieter life, avoiding the public prominence often associated with such high IQ scores.
His story underscores that a high IQ doesn’t always lead to fame or outward success. Harding’s decision to focus on private intellectual work rather than public recognition highlights that intelligence is just one part of a fulfilling life.
23. François-Marie Arouet (Voltaire) – French Writer and Philosopher: Estimated IQ of 195
François-Marie Arouet, better known as Voltaire, had his IQ estimated between 190 and 200, based on analyses of his literary influence, philosophical contributions, and sharp wit. While no formal IQ test existed during his time, his mastery of multiple disciplines suggests an exceptional intellect.
A key figure of the Enlightenment, Voltaire was a prolific writer, historian, and philosopher, best known for his advocacy of civil liberties, religious tolerance, and freedom of speech. His satirical works, including Candide, challenged power structures and laid the foundation for modern democratic thought. Voltaire’s ability to blend literary genius with political activism cemented his legacy as one of history’s most influential thinkers.
24. Christopher Langan – American Autodidact and Independent Theorist: Reported IQ of 195
Christopher Langan's IQ is reported to be between 195 and 210, based on various high-range intelligence tests. While there is no officially verified score from a recognized academic institution, his self-reported results and cognitive abilities have attracted widespread attention.
A self-taught intellectual, Langan is often called the "smartest man alive in America" due to his exceptional problem-solving skills and deep theoretical insights. He is best known for developing the Cognitive-Theoretic Model of the Universe (CTMU), a self-contained theory explaining the nature of reality and consciousness. Despite not following a traditional academic path, Langan’s ideas have sparked debates in philosophy, metaphysics, and cognitive science, showcasing his ability to think far beyond conventional frameworks.
However, despite his high IQ, Langan’s life has not been without struggles. He has faced significant challenges with mental health and adapting to mainstream society. His intellectual brilliance has not translated into the level of success expected, which underscores the point that high IQ alone doesn't necessarily equate to a fulfilling or prosperous life. This shows that intelligence is not always enough to overcome personal and social barriers.
25. Rick Rosner – American TV Writer and IQ Test Enthusiast: Reported IQ of 192
Rick Rosner's IQ is reported to be between 192 and 198, based on multiple high-range intelligence tests he has taken. While his scores are self-reported and not widely verified by academic institutions, his performance on various IQ assessments has earned him recognition in high-IQ societies.
Rosner has taken an unconventional path, working as a TV writer, reality show contestant, and even in more unusual jobs like bouncer and stripper in his younger years. His career challenges the stereotype of genius being limited to academia—showing that intelligence can manifest in unconventional ways. Best known for his work on Jimmy Kimmel Live!, Rosner continues to pursue intellectual challenges and engage in theoretical physics discussions, making him one of the most unique figures on this list.
26. Garry Kasparov – Russian Chess Grandmaster and Former World Champion: Estimated IQ of 190
Garry Kasparov, one of the greatest chess players of all time, is frequently cited as having an IQ of 190, though the specifics of the IQ tests that led to this claim remain unclear. Some sources dispute the validity of the reported score, with rumors suggesting that his IQ could be much lower—some even claim it could be as low as 125. However, given his legendary status in the chess world and his ability to dominate the game at the highest level, these claims seem highly questionable.
Kasparov became the youngest undisputed World Chess Champion in 1985 at just 22 years old, a title he held until his controversial loss to Vladimir Kramnik in 2000. His deep understanding of complex strategies and ability to calculate multiple moves ahead are evidence of his extraordinary intellectual prowess. While the true nature of his IQ remains a topic of debate, there’s no doubt that Kasparov’s impact on the chess world—and his influence on artificial intelligence, after his famous match with IBM’s Deep Blue—cements his place as one of the greatest minds in modern intellectual history.
27. Isaac Newton – English Physicist Who Discovered the Law of Gravity: Estimated IQ of 190
Sir Isaac Newton's IQ is estimated between 190 and 200, based on retrospective analyses of his groundbreaking discoveries in mathematics, physics, and astronomy. Though no formal IQ test existed during his time, his ability to revolutionize multiple scientific fields suggests an intellect of astonishing depth.
Newton formulated the laws of motion and universal gravitation, laying the foundation for classical mechanics. His work in calculus, optics, and planetary motion reshaped the scientific understanding of the universe. Principia Mathematica, his seminal work, remains one of the most influential scientific texts in history. Newton’s relentless curiosity and analytical thinking not only transformed physics but also redefined how we understand nature and the forces that govern it.
28. Marie Curie – Polish-French Pioneering Scientist in Radioactivity: Estimated IQ of 190
Marie Curie’s IQ is estimated between 180 and 200, based on her groundbreaking contributions to physics and chemistry. Though no formal IQ test existed during her time, her ability to revolutionize science and break barriers in academia reflects an exceptional intellect.
Curie was the first woman to win a Nobel Prize and remains the only person to win in two different scientific fields—Physics (1903) for her work on radioactivity and Chemistry (1911) for her discovery of radium and polonium. Her research paved the way for modern medical treatments, including radiation therapy for cancer. Beyond her discoveries, she shattered gender barriers in science, becoming the first female professor at the University of Paris and proving that intelligence and perseverance can change the world.
29. Magnus Carlsen – Norwegian World Chess Champion and Grandmaster: Estimated IQ of 190
Magnus Carlsen's IQ is estimated to be 190, based on his extraordinary chess abilities and problem-solving skills. While he has never publicly disclosed an official IQ score, his dominance in chess suggests a highly advanced intellect.
Carlsen became a grandmaster at 13 and won the World Chess Championship at 22, solidifying his status as one of the greatest chess players of all time. His ability to calculate multiple moves ahead, adapt strategies on the fly, and outthink opponents has drawn comparisons to legendary minds in strategic reasoning.
30. Blaise Pascal – French Mathematician and Inventor: Estimated IQ of 190
Blaise Pascal's IQ is estimated between 180 and 200, based on his groundbreaking contributions to mathematics, physics, and philosophy. While no formal IQ test existed in his time, his ability to innovate across multiple disciplines suggests a mind of exceptional depth.
Pascal made major advancements in probability theory, fluid mechanics, and projective geometry, influencing fields from statistics to engineering. At just 19 years old, he invented the Pascaline, one of the first mechanical calculators. His work in hydrodynamics and atmospheric pressure led to the creation of Pascal’s Law, a fundamental principle in physics. Beyond science, his philosophical writings, including Pensées, explored the complexities of human nature and faith, leaving a lasting intellectual legacy.
31. Galileo Galilei – Italian Scientist Who Proved the Earth Moves: Estimated IQ of 185
Galileo Galilei's IQ is estimated between 180 and 200, based on his groundbreaking discoveries in astronomy, physics, and engineering. Though no IQ tests existed in his time, his revolutionary contributions to science indicate an intellect far ahead of his era.
Often called the "father of modern science," Galileo provided observational proof that the Earth orbits the Sun, challenging centuries-old beliefs and facing opposition from the Church. His improvements to the telescope led to discoveries such as Jupiter’s moons, Saturn’s rings, and the phases of Venus, reshaping humanity’s understanding of the universe. His work in motion and physics later influenced Newton’s laws, securing his legacy as a scientific trailblazer.
32. Bobby Fischer – American Chess Prodigy: Reported IQ of 180
Bobby Fischer's IQ is reported to be between 180 and 187, based on his exceptional ability to outthink opponents in chess. While no formal IQ test was conducted, his brilliance in strategy and deep understanding of the game marked him as a chess prodigy.
At just 15, Fischer became the youngest chess grandmaster and went on to win the World Chess Championship in 1972, forever changing the landscape of competitive chess with his unique approach and sharp intellect.
High IQ People Who Didn't Make the Top (But Are Still Super Smart!)
"But where’s Einstein? I thought he was the smartest person!" Sound familiar? People often think of names like Einstein, Musk, and Jobs when considering the smartest people—and for good reason. These innovators changed industries and inspired millions.
But here’s the catch: while their IQs might not top the charts, their brilliance is undeniable.
They’ve shown that being “smart” isn’t just about having the highest IQ in the room. It’s about what you do with that intelligence—creative intelligence, problem-solving, and making an impact. These individuals have proven that intelligence is about more than just numbers.
33. J. Robert Oppenheimer – American Physicist and Father of the Atomic Bomb: Estimated IQ of 165
J. Robert Oppenheimer, often referred to as the "father of the atomic bomb," is estimated to have an IQ of 165, reflecting his brilliant scientific mind and leadership in the development of nuclear weapons during World War II. As the scientific director of the Manhattan Project, Oppenheimer played a pivotal role in shaping modern physics and influencing global history. His intellectual legacy, coupled with his complex personality, continues to be a subject of fascination in both scientific and cultural discussions.
34. Stephen Hawking – British Theoretical Physicist: Estimated IQ of 160
Stephen Hawking’s IQ is estimated to be 160, reflecting his groundbreaking work in mathematical physics, particularly in understanding black holes and the Big Bang theory. While his IQ wasn’t officially recorded, his contributions to quantum mechanics and cosmology reshaped modern physics, making him one of the most influential scientific minds of the 20th century.
35. Albert Einstein – German Theoretical Physicist and Nobel Laureate: Estimated IQ of 160
Albert Einstein’s IQ is most frequently cited as 160, based on his advanced contributions to theoretical physics and his formulation of the theory of relativity. While no formal IQ test was available during his time, his intellectual achievements in physics—including E = mc²—revolutionized the way we understand space, time, and energy. His impact on modern physics remains unparalleled.
36. Katherine Johnson – American Mathematician and NASA Pioneer: Estimated IQ of 160
Katherine Johnson’s IQ is estimated to be 160, based on her contributions to mathematics and her pivotal role in NASA's space missions. While her IQ was never formally tested, Johnson's work on trajectory calculations for John Glenn’s orbital flight helped lay the foundation for the success of key Apollo missions. Her ability to break barriers as a Black woman in STEM continues to inspire future generations of scientists and mathematicians.
37. Bill Gates – American Co-Founder of Microsoft: Estimated IQ of 160
Bill Gates' IQ is estimated to be 160, based on his exceptional ability to innovate in the technology sector. Gates co-founded Microsoft, shaping the personal computing revolution and making software accessible to millions. His influence extends beyond technology into philanthropy, where he has made significant contributions through the Bill & Melinda Gates Foundation in global health and education.
38. Sundar Pichai – American CEO of Google: Estimated IQ of 160
Sundar Pichai’s IQ is estimated to be around 160, reflecting his exceptional problem-solving skills and strategic vision. As the CEO of Google and its parent company, Alphabet, Pichai has overseen some of the most innovative advancements in tech, including the development of Google Chrome, Android, and Google’s AI initiatives. His leadership continues to shape the future of the tech industry, driving major innovations in search, cloud computing, and digital transformation.
39. Steve Jobs – American Co-Founder of Apple: Estimated IQ 160
Steve Jobs’ IQ is estimated to be 160, based on his innovative thinking and leadership at Apple, where he revolutionized the consumer electronics market. While Jobs never released his official IQ score, his ability to design iconic products like the iPhone and MacBook cemented his legacy as a visionary in technology. His work in creating a seamless blend of technology and user experience changed the way we interact with electronics.
40. Elon Musk – American Entrepreneur and Innovator: Estimated IQ 155
Elon Musk’s IQ is estimated to be 155, based on his remarkable ability to innovate in electric vehicles, space exploration, and renewable energy. While Musk has never publicly shared his IQ, his work in founding Tesla, SpaceX, and PayPal showcases his visionary thinking and problem-solving capabilities, placing him at the forefront of 21st-century innovation.
41. Mark Zuckerberg – American Co-Founder of Facebook: Estimated IQ 152
Mark Zuckerberg’s IQ is estimated to be 152, based on his early success in building Facebook and his ability to scale the social media platform into a global phenomenon. While his IQ score isn’t publicly verified, Zuckerberg's contributions to social networking, artificial intelligence, and virtual reality through Meta continue to influence how we connect and interact in the digital world.
42. Jeff Bezos – American Founder of Amazon: Estimated IQ of 150
Jeff Bezos’s IQ is most frequently cited as 150, a testament to his remarkable business acumen and innovation. As the founder of Amazon, Bezos revolutionized the way we shop online and transformed e-commerce into the powerhouse it is today. His vision extended beyond just retail, creating Amazon Web Services (AWS), which became a major force in cloud computing. Bezos’s bold strategies have not only reshaped global commerce but also redefined what it means to be a tech entrepreneur.
Defining Smartest: It's a Matter of Perspective!
So, who really is the smartest person in the world? It’s a question that’s as much about perspective as it is about intelligence itself. High IQ scores often dominate discussions, but it’s not all about the numbers.
We all know the value of emotional intelligence, social skills, creativity, and problem-solving skills in shaping a person’s brilliance. In fact, research has shown that high emotional intelligence can be more closely linked to success than IQ scores alone. While an average IQ might be enough to excel in many areas, those with exceptionally high IQ scores still need to leverage that intelligence effectively in the real world to make a lasting impact.
At the end of the day, intelligence isn’t a one-size-fits-all concept—it’s about what you do with what you’ve got. Whether through mathematical genius, innovative technology, or groundbreaking art, each person’s unique abilities contribute to the bigger picture.
Instead of asking who’s the smartest, perhaps the real question is: How will you use your intelligence to leave your mark?
