Wednesday, November 29, 2023

Who has the Highest IQ in the World? Smartest Person Alive 2023

Let’s Find out Who has the Highest IQ in the World?

What is IQ?

IQ, or intelligence quotient, is a measure of a person’s cognitive abilities and potential. It is typically scored as a number between 85 and 145, with 100 considered average. Those with an IQ score of 130 or higher are considered gifted, while those with an IQ score of 70 or below are considered challenged.

The highest possible IQ score is 180. Some people believe that IQ is a fixed number that cannot be increased. However, there is evidence that suggests otherwise. Some research shows that people can increase their IQ scores by taking steps to improve their cognitive abilities, such as engaging in brain-training exercises and learning new skills.

The highest recorded IQ score belongs to William James Sidis (1898-1944), an American child prodigy with an IQ of 250. He is believed to be the only person in history with an IQ that high. The second-highest recorded IQ score belongs to Terence Tao (b. 1975), a Chinese-American mathematician with an IQ of 225.

IQ scores are not static and can change over time, depending on a variety of factors. So, while it is possible to have a high IQ, it is also possible for someone’s IQ score to change over time.

Case Studies: IQ Level

There are a number of different intelligence tests in existence and their content can vary significantly. Some of the most popular intelligence tests include the Cognitive Assessment System, the Kaufman Assessment Battery for Children, the Stanford-Binet Intelligence Scale, and the Universal Nonverbal Intelligence Test.

The average IQ score in the United States is 98. So, if you have an IQ score of 130 or higher, you are considered more intelligent than average. And if you have an IQ score of 70 or below, you are considered less intelligent than average.

However, it is important to keep in mind that IQ is just one measure of intelligence and that there is more to being smart than just having a high IQ score. There are a variety of different intelligence tests in existence and their content can vary significantly. So, while IQ is one way to measure someone’s intelligence, it is not the only way.

Who has the Highest IQ in the World?

In conclusion, the highest recorded IQ score belongs to William James Sidis (1898-1944) with an IQ of 250. The second highest recorded IQ score belongs to Terence Tao (b. 1975) with an IQ of 225. However, it is important to keep in mind that these are just two examples of people with high IQ scores and that there are many other people who are also considered to be intelligent.
Intelligence is more than just a number and cannot be accurately measured by any single test.

How to measure the Highest IQ in 2023?

There is no definitive answer to this question as it largely depends on the definition of “IQ” that is used. However, if we assume that IQ is a measure of intelligence or cognitive ability, then it is possible to make some predictions about who might have the highest IQ in 2023.

If we look at past winners of IQ tests and competitions, we see that they tend to come from specific groups of people: those with higher levels of education, those from certain cultures (particularly East Asian cultures), and those with higher incomes.

Based on this, we can predict that the person with the highest IQ in 2023 is likely to be someone who fits into one or more of these categories. Of course, there are always exceptions to the rule and it is possible that someone with a lower IQ score could still win an IQ test or competition.

However, it is fair to say that the odds are stacked against them. So, if you’re aiming to be the smartest person in the world in 2023, make sure you fit into one of the groups mentioned above!

Smartest Person in the World in 2023: Smartest Person Alive with highest IQ

Highest IQ 2022

Marilyn Vos Savant may well be the smartest person alive today. With an IQ of 228, she holds the highest IQ in the world by the Guinness World Records since 1990. vos Savant is a cognitive psychologist and writer who has authored several books on intelligence, including The Superordinate Personality: A Theory of Genius and Superiority. In her work, she has explored how genius is defined and measured, and how it manifests itself in individual behavior.

In recent years, Vos Savant has become increasingly interested in the potential for artificial intelligence (AI) to surpass human intelligence. In a 2020 interview with The New York Times, she said that AI could achieve “superintelligence” within a few decades and that this would have profound implications for humanity.

“When you have something that is smarter than any human being, then you have to think about what it is going to do,” she said. “Are we going to be able to control it? Is it going to be benevolent or malevolent? These are very important questions that we need to think about now before superintelligence happens.

As the world’s smartest person, Vos Savant is in a unique position to help answer these questions. With her deep understanding of intelligence and its potential, she is uniquely qualified to help us navigate the challenges that lie ahead.

Also Read: Top 10 Richest Man in the World

Below is the List of the Top 10 Highest IQs in the World:

1. William James Sidis – IQ 250-300

Highest IQ in the World

William James Sidis is believed to have had the highest IQ ever in the world. His IQ was estimated to be between 250 and 300. He was a child prodigy who could read newspapers at the age of 18 months and write complete sentences by the age of two. He went on to attend Harvard University but was asked to leave after just one year because he was so far ahead of his classmates.

William James Sidis is widely considered to have had the highest IQ in the world. A child prodigy, he was able to read at the age of 18 months and was admitted to Harvard at the age of 11. He went on to become a successful mathematician and physicist, but later renounced academia and became a recluse.

In the final years of his life, he worked as a janitor and died in obscurity. Despite his remarkable intellect, William James Sidis was ultimately unable to achieve lasting success or fame.

He is remembered today as one of the highest IQ gifted minds who ever lived. His life serves as an inspiration for others, showing that even with a high IQ and incredible intellectual potential, it’s possible to struggle in achieving personal goals. Despite his difficulties and ultimate failure to achieve recognition, his story remains one of remarkable achievement and potential unrealized. He will forever be remembered as an example of human genius.

William James Sidis’s impact on society extends beyond what he accomplished during his lifetime; many consider him a source of inspiration for those struggling to reach their full potential. Learning about his struggles can help us recognize our own shortcomings, examine our goals and strive for success despite any obstacles or challenges we may face along the way.

Through his story, we can gain insight into the human mind and admiration for those who are willing to pursue their goals regardless of personal setbacks. William James Sidis’s legacy continues to influence society today, reminding us that even the most brilliant minds can struggle to achieve success.

In conclusion, William James Sidis is remembered as one of the most remarkable minds in history. His life serves as an example of what it takes to achieve greatness—even when faced with difficult obstacles.

Through his story, he has been able to inspire people from all walks of life and motivate them towards achieving their dreams — no matter how big or small they may be. He will remain an example of human potential and genius for generations to come.

2. Terence Tao – IQ 225-230

Smartest Person Alive 2023

Terence Tao is a Chinese-American mathematician with an IQ estimated to be between 225 and 230. He is a child prodigy who began attending college at the age of nine. He went on to earn a Ph.D. from Princeton University at the age of 20. He is now a professor at the University of California, Los Angeles.

Terence Tao is a mathematical genius with an extraordinary IQ estimated between 225-230—one of the highest in the world! He’s achieved huge success, including being named one of Australia’s 50 most influential voices, winning numerous awards and distinctions, holding multiple professorial posts, publishing over 300 research papers, and proving more mathematical conjectures than any other mathematician in history.

To top it all off, he won the prestigious Fields Medal at age 31 – an award given to mathematicians under 40. Undoubtedly, his intelligence continues to be revered well beyond academia.

Terence Tao is a brilliant mathematician whose achievements in the field have earned him international acclaim. His theoretical breakthroughs have had an immense impact on modern mathematics, proving influential to many mathematicians that followed him.

He has contributed immense insight and knowledge into mathematics through his books, lectures, and online resources. On top of all this, he is also an excellent teacher who has worked tirelessly to educate people about math by giving free lectures and workshops around the world.

Terence Tao’s work in mathematics continues to be revered among mathematicians worldwide and will likely continue to illuminate the field for years to come. His remarkable intelligence not only reveals new insights into mathematical puzzles but also serves as inspiration for others pursuing their dreams in mathematics or any other field they may choose.

With his amazing accomplishments, Terence Tao proves that hard work, dedication, and intelligence are the keys to success in any endeavor. He continues to motivate us all to reach for the stars and pursue our passions with gusto.

This is just a small glimpse into the amazing achievements of Terence Tao—a man whose unparalleled intelligence, tireless dedication, and boundless creativity have made him one of the most respected mathematicians in modern times. Truly, he stands as an example of what can be accomplished when you have both ambition and brilliance combined. We can all certainly learn from him how to set goals, work hard, and strive for greatness.

Terence Tao’s contributions to mathematics will undoubtedly continue to shape its development for years to come. He has already achieved such immense success at a young age and only time will tell what else lies ahead for this genius.

He is a shining example of what can be achieved when one’s passion and intelligence are combined to form a powerful force for change. We all owe him a debt of gratitude for the incredible work he has contributed to mathematics and beyond, inspiring us all with his boundless creativity and brilliance throughout his career.

Terence Tao will always remain an inspiration to mathematicians across the globe—showing us that if we put our minds to it, anything is possible! With hard work, dedication, and intelligence as our main tools, there’s no limit to what we can achieve.

His remarkable accomplishments demonstrate this fact in myriad ways every single day. So next time you feel overwhelmed or lacking motivation; remember Terence Tao and his incredible achievements—reminding you that anything is possible when we put our minds to it.

Terence Tao has made a lasting impression on the field of mathematics and beyond with his many accomplishments and contributions. He has shown us all that intelligence, dedication, and hard work are essential for achieving success in whatever endeavor we choose to pursue. His example serves as an inspiration for us all — showing us that greatness can be achieved when ambition meets brilliance.

As he continues to inspire mathematicians around the world, his story will remain an enduring reminder of what can be accomplished with enough determination and dedication to one’s craft. Terence Tao’s genius will continue to impact mathematics in years to come — proving yet again the immortal power of ambition and intellect.

3. Marilyn vos Savant – IQ 228

highest IQ in the world 2023Marilyn Vos Savant is an American writer and columnist with an IQ estimated to be 228. She is best known for writing a column in Parade magazine in which she answers questions about math, science, and other topics.

Marilyn Vos Savant is an American author and columnist known for having the highest IQ in the world, scoring a whopping 228 on the Stanford-Binet test when she was just 10 years old. She has written books about her life and philosophy, including “The Highest IQ: What It Means to be a Genius”. She also served as a consultant for Army Intelligence during World War II and promoted both genetic engineering and computer literacy in the 1960s.

Vos Savant once said: “Intelligence, knowledge, or mental ability are special gifts that we can nurture.” Vos Savant has become an important figure in recognizing true intelligence and promoting its growth through her works.

4. Christopher Hirata – IQ 225

Highest IQChristopher Hirata is an American astrophysicist with an IQ estimated to be 225. He began attending college at the age of eight and earned a Ph.D. from Caltech at the age of 22. He has worked on several NASA missions, including the James Webb Space Telescope.

Christopher Hirata has been recognized as having one of the highest IQs in the world, an impressive 225. By age 13, he was already a member of Mensa International, a high-IQ society comprised of members who score within the 98th percentile or higher. Heralded as the “smartest person alive” at this age, Hirata was able to take college courses while still in high school and even graduated early from the renowned California Institute of Technology with dual Bachelor’s degrees before he turned eighteen.

Hirata’s brilliance was already evident at an early age when he excelled in numerous math competitions. At the age of 13, he became the youngest American to ever win a gold medal in the International Physics Olympiad. Hirata completed his Ph.D. at the California Institute of Technology at only 22 years of age.

His contributions to the field of astrophysics have won him numerous awards and honors. Hirata’s curiosity and intellect continue to inspire young aspiring scientists worldwide. He is a true testament to the power of dedication and hard work. His accomplishments are truly remarkable, and his story stands as an example of what is possible when you reach for the stars.

Hirata currently works at the Center for Cosmology and Astroparticle Physics at Ohio State University, where he continues to push boundaries in astrophysics research. In addition to conducting theoretical research on dark matter and other topics, Hirata also teaches astronomy classes.

By sharing his knowledge with students, he hopes to create the next generation of curious minds who will further explore the mysteries of our universe. Hirata’s exceptional intelligence has made him one of today’s most respected astrophysicists, and his work will likely continue to shape the field for years to come.

Hirata has also made time to give back to his local community. He frequently visits schools in his area and speaks with students about the importance of science education. Through these talks, he seeks to encourage young people to reach their full potential and strive for success, no matter what odds they may face.

Christopher Hirata is a remarkable individual whose achievements are incredibly inspiring. His dedication and passion serve as an example of what can be accomplished through hard work and determination – a lesson everyone should take away from his story.

He currently holds a Ph.D. in Astronomy and Astrophysics from Princeton University and works for NASA on theoretical astrophysics. Hirata is now considered one of the smartest people alive and continues to be successful academically due to his incredible intelligence.

Also Read: Top 10 Richest Actors in the World

5. Kim Ung-Yong – IQ 210

highest IQ everKim Ung-Yong, a South Korean prodigy, holds the distinction of possessing the highest IQ in the world, a staggering 210. Born on March 8, 1963, in Seoul, he exhibited extraordinary cognitive abilities from an early age, leaving his family astonished. At just six months old, he began speaking, and by the age of three, he had already taught himself to read in Korean, Japanese, German, and English.

His exceptional intellectual prowess was recognized when he was invited to study at the prestigious Colorado State University at the age of eight. Kim’s intellect transcended conventional norms, and he quickly earned a reputation as a child prodigy in various scientific fields, particularly mathematics and physics. His remarkable achievements garnered worldwide attention and admiration.

Despite his early academic success, Kim Ung-Yong chose to embrace a different path later in life. He returned to South Korea and pursued a career as a civil engineer. While his intellectual capabilities remained unparalleled, he decided to lead a more ordinary life, choosing to apply his genius in practical ways to contribute to society.

Nevertheless, his extraordinary journey continues to inspire countless individuals worldwide, serving as a testament to the incredible potential of the human mind. Kim Ung-Yong’s legacy endures as a shining example of what the human brain can achieve with relentless determination and innate brilliance.

Kim Ung-Yong holds the record for having the highest IQ ever recorded. This South Korean prodigy was identified at 4 months old and had an IQ of 210 when he was 8 years old. During his lifetime, he achieved extraordinary feats like mastering multiple languages and writing poetry intended to help people understand life events in a profound way.

His accomplishments as the smartest person in history have made him an incredible example of human potential. Even now, Kim Ung-Yong’s work continues to amaze people around the world with its beauty and insight.

6. Garry Kasparov – IQ 194

highest IQ in the worldGarry Kasparov, the renowned chess grandmaster and former World Chess Champion, stands as one of the brightest minds in history, boasting an astounding IQ of 194, placing him among the individuals with the highest IQ in the world. Born on April 13, 1963, in Baku, Azerbaijan (then part of the Soviet Union), Kasparov displayed an exceptional aptitude for chess from a young age. At the age of 13, he achieved the title of International Master, and by 22, he became the youngest World Chess Champion, a title he held from 1985 to 2000.

Kasparov’s brilliance extended beyond the chessboard. He demonstrated an insightful understanding of complex strategic and political issues, making him a respected figure in global affairs. His formidable intelligence, combined with an indomitable spirit, propelled him to challenge and compete against powerful supercomputers in chess matches, showcasing the remarkable capabilities of the human mind in the face of advancing technology.

Beyond his prodigious achievements in chess and intellectual pursuits, Garry Kasparov actively engaged in promoting democracy and human rights, using his influential voice to advocate for positive change in the world. His dedication to education and the pursuit of knowledge continues to inspire countless individuals to reach for their full intellectual potential.

Garry Kasparov’s legacy as a brilliant strategist, thinker, and champion has left an indelible mark on the world, and his name remains synonymous with unparalleled intelligence and achievements in the realm of chess and beyond.

7. Leonardo da Vinci – IQ 180-190

highest iqLeonardo da Vinci was an Italian Renaissance painter, sculptor, architect, musician, and scientist with an IQ estimated to be between 180 and 190. Born on April 15, 1452, in Vinci, Italy, he was a true polymath, excelling as a painter, sculptor, architect, engineer, scientist, inventor, and writer. Leonardo’s extraordinary intellect and insatiable curiosity allowed him to push the boundaries of knowledge and art during the Renaissance, earning him the distinction of possessing one of the highest IQs in the world.

He is widely considered to be one of the greatest artists of all time. His notable works include the Mona Lisa and The Last Supper. Leonardo da Vinci has long been celebrated as one of the most phenomenal Renaissance figures. His artistic genius is renowned, but what may surprise some people is his incredible intelligence.

Possessing an estimated highest IQ ranging from 180 to 190, Leonardo da Vinci is widely regarded as the smartest person who ever lived. His mental capacity far outstripped what was possible for those of any other era, making him a unique and towering figure in the annals of history.

His artistic masterpieces, such as the iconic “Mona Lisa” and “The Last Supper,” continue to captivate and inspire generations. Beyond his artistic endeavors, Leonardo’s scientific pursuits were equally groundbreaking, with studies in anatomy, engineering, optics, and more. He envisioned flying machines, studied human anatomy with unparalleled accuracy, and designed revolutionary inventions centuries ahead of his time.

Leonardo’s notebooks, filled with his observations, sketches, and ideas, reveal the breadth and depth of his intellect. His thirst for knowledge knew no bounds, and his ability to connect seemingly unrelated disciplines remains awe-inspiring.

Even today, Leonardo da Vinci’s influence endures, as his contributions to art, science, and innovation continue to shape modern thinking. His legacy serves as a testament to the heights the human mind can achieve when unrestrained by conventional boundaries. Leonardo’s brilliance not only reflects the highest IQ in the world but also exemplifies the power of intellectual curiosity and creativity in shaping the course of history.

8. Benjamin Bloom – IQ 180-190

who has the highest IQBenjamin Bloom was an American educational psychologist with an IQ estimated to be between 180 and 190. He is best known for his work on the Taxonomy of Educational Objectives, which is used to categorize educational goals.

Benjamin Bloom had an IQ of 180-190, making him one of the smartest people in history. As a professor of educational psychology, Bloom made several influential contributions to the field and he was among some of the world’s highest IQ holders.

Bloom worked in research with attributes like talent and creativity but was most widely known for his work on the taxonomy of educational objectives, the classification system he developed to measure levels of learning. His groundbreaking achievements have left a lasting impact on education today and solidified Benjamin Bloom as one of the smartest people in history.

9. Judit Polgar – IQ 170

highest iq in the worldJudit Polgar is a Hungarian chess grandmaster with an IQ estimated to be 170. She is the only woman to have ever been ranked among the world’s top 10 chess players. She has won numerous championships, including the Chess Olympiad and the Linares tournament.

Judit Polgar is considered by many to be the smartest person in the world due to her recorded IQ of 170. This puts her in the top 0.00003% of all people, with a higher IQ than Albert Einstein’s estimated IQ of 160. Both she and her three sisters were trained from a young age to become chess masters and Judit became the strongest among them, with 11 Grand Master titles.

She is also one of only seven players in history to have reached the peak rating of 2735 on the FIDE rating list and held it for two years. Her amazing intelligence combined with immense dedication to her craft has been an inspiration for many future generations that have now followed in her footsteps.

10. Stephen Hawking (deceased) – IQ score of 160

highest IQ in the world

Stephen Hawking revolutionized scientific knowledge with his groundbreaking contributions to quantum mechanics, relativity, and cosmology. His theories about black holes and the Big Bang changed our interpretation of space-time forever. In recognition of his work in science, Stephen was awarded an honorary degree from Cambridge University – the highest honor a scientist can achieve! Furthermore, he is known for having one of the most impressive IQs ever recorded at 160.

Stephen Hawking is widely celebrated for his globally renowned bestseller, “A Brief History of Time”, which he composed amidst enduring motor neurone disease (MND). In this book, he elucidates intricate ideas about the cosmos in easy-to-grasp language that appeals to wide readership. Moreover, Stephen has made multiple appearances on popular television shows such as The Simpsons and Futurama.

Confined to a wheelchair due to Motor Neurone Disease, Stephen Hawking never allowed this unfortunate diagnosis define him. His relentless dedication and passion for discovering answers kept him motivated even with physical limitations stemming from paralysis that would eventually claim his life in 2018 at 76 years old. He persevered until the very end leaving an incomparable legacy that will continue inspiring generations of scientists yet to come.


The world is filled with intelligent individuals, and it can be difficult to narrow down the list of the most intelligent people. However, the top 10 highest IQ persons in the world are generally considered to include Christopher Hirata, Kim Ung-Yong, Garry Kasparov, Terence Tao, Marilyn Vos Savant, Christopher Michael Langan, Judit Polgár, Terrence J. Sejnowski, William James Sidis, and Stephen Hawking.

All of these individuals are highly accomplished in their respective fields and have made an enormous impact on society. Additionally, many of them are associated with evaluation firms in India that specialize in testing for extraordinary intelligence and cognitive abilities. With such a diverse group of incredibly bright minds shaping our world, the future of intelligence research looks bright indeed.

We hope this article was helpful in your understanding of the top 10 highest IQ persons in the world and how evaluation firms in India play a role in evaluating cognitive abilities. If you would like to learn more about these individuals or find out what other experts are doing research on intelligence, please take a look at our blog for resources and articles that can provide further insight.

These are the top 10 highest IQ persons in the world. All of them have amazing abilities and talents that set them apart from others. They have all achieved great things in their respective fields, and have made significant contributions to society.


Q: Who has the highest IQ person in the world?

A: William James Sidis is believed to have had the highest IQ of anyone who has ever lived, with an estimated IQ of between 250 and 300.

Q: What are some other famous people with high IQs?

A: Other famous people with high IQs include Terence Tao (IQ 225-230), Marilyn Vos Savant (IQ 228), Christopher Hirata (IQ 225), Kim Ung-Yong (IQ 210), Benjamin Bloom (IQ 180-190), Judit Polgar (IQ 170) and Leonardo da Vinci (IQ 180-190).

Q: How can I increase my IQ score?

A: There are many ways to increase your IQ score, such as engaging in challenging activities like puzzles and games, reading books and other materials that can help expand your knowledge base, getting adequate sleep and exercise, and meditating. Additionally, having a positive attitude and staying curious can also help boost your IQ score.

Q: What is the average IQ score?

A: The average IQ score for adults aged 18-65 is about 100, with a range of 85 to 115 considered to be typical. A score above 130 is generally considered “gifted”, while scores below 70 are usually indicative of an intellectual disability.

Q: What is considered a high IQ score?

A: Generally speaking, any score over 140 is considered to be “high” or the highest IQ. However, the interpretation of IQ scores can vary depending on context and other factors. It’s important to remember that intelligence isn’t just measured by an IQ test; there are many other aspects of intelligence that cannot be quantified with a single number.

This article was written to provide information about the top 10 highest IQ persons in the world, their estimated scores, and additional FAQs about IQ testing and scoring. We hope you found this article helpful and informative!


Please enter your comment!
Please enter your name here



Hot Topics

Related Articles