Top 10 people with the highest IQ: Average is 100; #1 scored 276

One of the most exclusive groups in the world of high intelligence is the Giga Society, which only admits members who score 190 or above on approved high-range IQ tests. According to its 2025 report, the society listed the top 10 individuals with the highest verified IQs. These extraordinary minds have made remarkable contributions across disciplines—from mathematics and physics to medicine—pushing the boundaries of what we understand as intellectual brilliance.

Top 10 people with the highest IQ

YoungHoon Kim, IQ 276

YoungHoon Kim

According to reports, South Korean native YoungHoon Kim has the highest recorded IQ in the world as of 2024, with an incredible score of 276. Official recognition of his extraordinary intelligence has come from reputable organisations like the World Genius Directory and the Giga Society. In addition to his extraordinary cognitive prowess, Kim is well-known for his vast work in a variety of fields, including psychology, neuroscience, and linguistics, where he has made significant contributions that highlight the depth of his brilliance.

Terence Tao, IQ 230

Terence Tao

Australian-American mathematician Terence Tao is well-known for his contributions to number theory and harmonic analysis. A youthful prodigy, he became a professor at UCLA by the age of 24 after earning his PhD at the age of 20. Tao, who received the Fields Medal in 2006, is respected for his ability to solve problems both individually and collaboratively. He has also written a great deal to simplify difficult math.

Marilyn Vos Savant, IQ 228

Marilyn Vos Savant

Marilyn Vos Savant is an American writer and columnist who is best known for her long-running “Ask Marilyn” column in Parade magazine. She is included in the Guinness Book of World Records for having an extraordinarily high IQ. She is a well-known, though occasionally disputed, voice in public debates on intelligence and critical thinking because of her keen intellect and careful answers to questions about logic, physics, and philosophy.

Christopher Hirata, IQ 225

Christopher Hirata

Christopher Hirata, a Japanese-American astrophysicist, made headlines early by winning a gold medal at the International Physics Olympiad at just 13. He began studying at Caltech at 14 and earned a PhD from Princeton by 22. Known for his work on dark energy and the structure of the universe, Hirata has received major honors like the MacArthur Fellowship and remains a key figure in modern cosmology.

Sho Yano, IQ 200

Sho Yano

Sho Yano is a child prodigy who made headlines by earning his bachelor’s degree from the University of Chicago at just 12 years old. He later became one of the youngest US doctors after graduating from medical school at 21. His research in genetics and molecular biology has made notable contributions to science, making him a global inspiration for young scholars.

Evangelos Katsioulis, IQ 198

Evangelos Katsioulis

Greek psychiatrist Evangelos Katsioulis, who belonged to prestigious high IQ societies, is well-known for possessing one of the highest IQs ever measured. Having earned degrees in philosophy, research methodology, and medicine, he blends a strong interest in intellectual inquiry with practical experience. Through international conferences and scholarly forums, he actively supports education and thought leadership.

Christopher Harding, IQ 197

Christopher Harding

Christopher Harding, an Australian intellectual born in 1944, was once dubbed the “Smartest Man in the World” by the Guinness Book of World Records (1966–1988) with an IQ between 196 and 197. He founded the International Society for Philosophical Enquiry (ISPE) in 1974, a prestigious high-IQ group that admits only those scoring in the top 0.1 per cent on intelligence tests.

Christopher Langan, IQ 195

Christopher Langan

Despite having a difficult childhood and no formal higher education, Christopher Langan, who is frequently quoted as having an IQ of almost 195, became well-known as a “self-educated autodidact.” He has worked as a forest ranger and a cowboy, but his most well-known contribution is the “Cognitive-Theoretic Model of the Universe” (CTMU), an ambitious hypothesis that combines philosophy, theology, and science. His mystery is heightened by his life, which has been characterised by both genius and personal struggles.

Rick Rosner, IQ 192

Rick Rosner

Rick Rosner, with a reported IQ of 192, is known for his unconventional life and sharp intellect. He’s held unusual jobs, from bouncer to stripper, and later wrote for shows like Jimmy Kimmel Live! and Who Wants to Be a Millionaire. His game show appearances and work on consciousness and intelligence reflect his eccentric yet deeply analytical mind.

Garry Kasparov, IQ 190

Garry Kasparov

In 1985, at the age of 22, renowned Russian chess grandmaster Garry Kasparov became the youngest undisputed World Champion. He ruled the chess world for more than ten years and was well-known for his audacious, calculated play. Beyond the game, he is a respected figure in chess and international politics because of his vocal involvement and attempts to advance democracy in Russia.