An IQ of 300 is considered far beyond genius level, representing an almost statistically impossible extreme, though such scores aren't reliably measured by standard tests (which cap around 160) and historical claims (like William James Sidis') are debated; "genius" usually starts at 140+, but true genius also involves experience, knowledge, and significant achievement, not just raw score.
Bearing these caveats in mind, it is generally believed that the highest IQ score ever recorded is that of William James Sidis, who is believed to have had an IQ of between 250 and 300. This would place him in the top 0.000001% of the population in terms of intelligence.
Snoop Dogg has publicly stated he has an IQ of 147, a score that falls into the "highly gifted" or "genius" category, much to his own surprise given his self-described average school performance (straight Cs). While this self-reported score suggests exceptional intellect, IQ tests measure specific cognitive abilities, and success in life and business (like Snoop Dogg's multifaceted career as a rapper, entrepreneur, and media personality) reflects a broader range of intelligence and skills.
Lady Gaga's IQ is widely rumored to be around 166, placing her in the "exceptionally gifted" or genius category, though this is an estimation often cited in celebrity lists, not a officially verified number from a public test. This high estimate is supported by her early academic achievements, like attending a summer program for the top 1% of students, and her demonstrated creative and musical genius as a composer and performer, notes Us Weekly and Brainmanager.io.
Stephen Hawking never officially revealed his IQ, and often dismissed the metric, famously saying, "People who boast about their IQ are losers". While estimates place his IQ around 160, a genius level, this is speculative; Hawking emphasized that creativity, persistence, and passion for science were more important than a single score, despite his profound impact on physics.
Madonna reportedly has a genius-level IQ of around 140, well above the average, with sources citing her intelligence and business acumen, often linking it to her ability to recognize patterns and disrupt culture. This high score is sometimes associated with her academic achievements, like receiving a scholarship to the University of Michigan, and her remarkable career longevity, making her a highly successful artist.
Rappers IQ's, Jay Z has an IQ of 148, Kendrick Lamar has an IQ of 129, Tupac Shakur IQ is 124, Lil Wayne IQ is 120, and last is Eminem with 110 IQ. Archived post.
Kanye West (Ye) publicly claimed to have a 142 IQ in an April 2025 social media post, a score he stated meant he had a "genius intellect," though this remains an unverified, self-proclaimed figure not supported by official test results. While supporters praised the claim, many questioned its accuracy, and there's no official, independently verified IQ score for him, with intelligence being a multifaceted concept beyond a single number.
Matt Damon
The Hollywood heavyweight, who boasts an IQ of 160, famously completed the project with his longtime friend Ben Affleck.
How to spot a genius – the 10 Behaviours Geniuses Display
Careers in the medical field, computer programing, university research positions, and engineering are among the ones with the highest requirements to be smart and have a high IQ.
Although IQ can change for an individual, across a population it is well established that IQ is stable across the lifespan. This does NOT mean that our abilities do not change as we age. IQ (as the name indicates) is a QUOTIENT, i.e., your score is calculated relative to persons of your age.
Leonardo da Vinci: IQ 180–220
While IQ tests weren't around when Leonardo da Vinci was living, some have estimated that his score would have been between 180 and 220. Like other people considered geniuses, he had a wide range of skills, excelling in everything from art and science to music and architecture.
Anything above 130 is considered gifted or very advanced. Some historical IQs that have been reverse-analyzed include Albert Einstein with 160, Leonardo da Vinci with 180, and Isaac Newton with 190. As for William James Sidis, the “smartest person who ever lived,” he had an estimated IQ of around 250 to 300.
We all know that Gaga is a creative genius, but it turns out she's an actual genius too with a widely-estimated IQ of 166, making her “exceptionally gifted” — and we don't disagree!
Snoop Dogg has publicly stated he has an IQ of 147, a score that falls into the "highly gifted" or "genius" category, much to his own surprise given his self-described average school performance (straight Cs). While this self-reported score suggests exceptional intellect, IQ tests measure specific cognitive abilities, and success in life and business (like Snoop Dogg's multifaceted career as a rapper, entrepreneur, and media personality) reflects a broader range of intelligence and skills.
Her songwriting & business smarts suggest above-average intelligence, but real IQ needs a pro test. Taylor Swift's IQ is often cited online as 160, which would place her in the top 0.01% of the population, higher than 99.99% of people.
IQ tests are not perfect, not should they be used to create a class-ist society ruled by high testers. Paris Hilton has a 129 IQ and Andy Warhol's was 86. But who contributed more to society?
Ben Affleck's IQ is often cited as 154, placing him in the highly gifted range, though these figures for celebrities are estimates, with some sources also mentioning high intellect in relation to his work, such as co-writing Good Will Hunting with Matt Damon.
Marilyn Monroe was more than a glamorous icon—she was deeply intelligent and loved literature and philosophy. She reportedly had an IQ of 168, even higher than einstein's estimated 160.
15. William Shakespeare. Often referred to as England's national poet and the "Bard of Avon," William Shakespeare had an estimated IQ of 210 and is widely regarded as the greatest English-speaking writer and dramatist to have ever lived.
Stephen Hawking's "last words" aren't a single phrase but a collection of final messages from his speeches and posthumously published book, emphasizing bravery, hope, curiosity, and the scientific explanation of the universe over divine intervention, with parting advice to "look up at the stars and not down at your feet" and to "be brave, be determined". His final book, Brief Answers to the Big Questions, published after his death in 2018, summarized his lifelong views, stating there is no God and that the laws of nature explain existence, a conclusion stemming from his belief that science provides answers where religion often invoked a creator.
Celebrity Genius 5 - James Woods
Emmy Award winner James Woods is an Oscar-nominee and superstar has a whopping IQ of 180. While in high school, Woods was in a UCLA linear algebra course.