World Leaders Ranked by IQ (2026): The Only Estimates, Degrees and Hoax Lists

Search for the IQ of world leaders and you will find ranked lists, with Putin, Xi, Trump or Merkel near the top and a number beside each name. No sitting world leader has a published IQ test score, and no peer-reviewed study estimates one. The only named leaders with IQ-style numbers are 42 US presidents and 85 historic statesmen, soldiers and revolutionaries; every other figure is a guess, an unsourced claim or a hoax. This article ranks what can honestly be ranked, sets out what each of 19 current leaders' checkable record shows as of 27 October 2026, and traces where the viral numbers come from.

Is there an IQ ranking of world leaders?

Not a trustworthy one for anyone alive and in office. We searched Crossref (10 query wordings), OpenAlex (10) and Europe PMC (4), with phrases such as intelligence of heads of state, IQ of political leaders, prime ministers intelligence, cognitive ability of national leaders and intelligence of dictators. No paper estimates IQ for a named leader outside the United States. The United States is the exception because of one study, Dean Keith Simonton's 2006 paper in Political Psychology, which our US presidents ranked by IQ article walks through. A 2024 paper in The Leadership Quarterly included intelligence scores for 41 US presidents, so the American presidents remain the only named leaders in the literature.

Simonton himself is blunt about the popular version. In a 2018 review in the Journal of Intelligence he described the internet's debates about presidents' IQ as "controversies (and hoaxes)". There is no equivalent study for British prime ministers, as our UK prime ministers ranked by IQ article sets out, and the only expert ranking of first ladies stopped scoring intelligence after 2008, as first ladies ranked by intelligence shows.

The only IQ estimates for historic world leaders: Cox, 1926

Catharine Cox's The Early Mental Traits of Three Hundred Geniuses (Stanford University Press, 1926) estimated the childhood and youth IQ of 301 eminent people born between 1450 and 1850, by scoring what the surviving records say they did young. Following Havelock Ellis's scheme, she set aside royalty and the hereditary nobility unless their distinction came from their own performance, so there are no kings or queens in it. There are 85 political and military leaders: 47 statesmen, 9 revolutionary statesmen and 29 soldiers, in our transcription of her tables, which sits behind our IQ of historical geniuses study. Each leader has two estimates, one for childhood to age 17 and one for ages 17 to 26, and each is also corrected for how thin the surviving record was.

Ranked by the corrected estimate for ages 17 to 26, the eight highest are below. Each line gives the two corrected estimates (early, later), with the uncorrected pair in brackets. Six more leaders tie at 170 for the later estimate: Benjamin Constant, Lazare Carnot, Anne Robert Jacques Turgot, Robespierre, Vergniaud and Marat.

• 1. Hugo Grotius, Dutch jurist and statesman (1583-1645): 195 and 200 (uncorrected 185 and 190)
• 2. Thomas Wolsey, English cardinal and statesman (1475-1530): 185 and 200 (165 and 165)
• 3. William Pitt the Younger, British prime minister (1759-1806): 170 and 190 (160 and 180)
• 4. Honore Gabriel Riqueti de Mirabeau, French revolutionary statesman (1749-1791): 180 and 185 (165 and 175)
• 5. Robert Peel, British prime minister (1788-1850): 170 and 180 (155 and 170)
• 5. Henry Brougham, British statesman (1778-1868): 170 and 180 (160 and 170)
• 7. John Quincy Adams, US president (1767-1848): 170 and 175 (165 and 165)

The famous names are lower than the popular lists suggest. Napoleon Bonaparte is rated 140 and 145 after correction (135 and 140 before), and 58 of the 85 leaders have a higher corrected later estimate. George Washington is 130 and 140, the best-rated soldier is Simon Bolivar at 135 and 155, and Winston Churchill, Angela Merkel and every other leader of the last century are absent, because Cox's subjects were born between 1450 and 1850. Across the 85, the uncorrected estimates average 128.6 (to age 17) and 136.0 (ages 17 to 26); the corrected later estimate averages 155.1. That last number is not an average world leader's IQ: Cox chose people because they were eminent, and her correction adds points where the record is thin.

Cox also warned against the use the internet makes of such tables. Beside her count of subjects by nationality she wrote that "National differences in 'brightness' are not to be inferred from the figures in Table 11." We follow her and do not rank countries by their leaders. The estimates are on the old mental-age scale, not on today's mean-100 scale, which is why our explainer on deviation IQ and the old ratio formula matters before you compare any of these numbers with a modern score.

Who is the smartest world leader today? What the checkable record shows

Nobody can say, because no sitting leader has been tested in public. What can be checked is each leader's highest qualification, which says something about training and selection and nothing direct about IQ. We read the biographies of 19 leaders on 27 October 2026 (encyclopaedic sources, so treat each line as a single-source record, not an audit). Two timing notes: the United Kingdom changed prime minister on 20 July 2026, when Andy Burnham succeeded Keir Starmer, and Israel was due to vote on 27 October, the day we checked, so Benjamin Netanyahu is listed as the prime minister in office at that time.

Doctorates (four). These are the leaders whose highest qualification is a research degree:

• Mark Carney, Canada: DPhil in economics, Oxford, 1995, after an economics degree at Harvard
• Claudia Sheinbaum, Mexico: PhD in energy engineering, UNAM, 1995, with thesis work at the Lawrence Berkeley National Laboratory
• Pedro Sanchez, Spain: doctorate in economics, Universidad Camilo Jose Cela, 2012; the thesis has faced plagiarism allegations since 2018
• Pope Leo XIV, Vatican City: bachelor's degree in mathematics (Villanova, 1977), then a doctorate in canon law (1987)

Law degrees (five). Law is the commonest professional route in this group:

• Friedrich Merz, Germany: law at Bonn and Marburg, law school finished 1985, then judge and corporate lawyer
• Vladimir Putin, Russia: law at Leningrad State University, 1975, plus a 1997 "Candidate of Economic Sciences" thesis that Igor Danchenko and Clifford Gaddy call plagiarised
• Volodymyr Zelensky, Ukraine: law degree, Kryvyi Rih Institute of Economics, then a career in comedy
• Lee Jae-myung, South Korea: law degree, Chung-Ang University, 1986, then a human-rights lawyer
• Mohammed bin Salman, Saudi Arabia: bachelor's degree in law, King Saud University, second in his class

Another degree or course (eight). The rest took a first degree or professional course in another field:

• Donald Trump, United States: BSc in economics, Wharton School, University of Pennsylvania, 1968
• Andy Burnham, United Kingdom: BA in English, Fitzwilliam College, Cambridge, 1991 (upper second)
• Sanae Takaichi, Japan: BA in business administration, Kobe University, 1984
• Anthony Albanese, Australia: studied economics at the University of Sydney
• Benjamin Netanyahu, Israel: BSc in architecture, MIT, 1975, and a master's from the MIT Sloan School, 1976
• Xi Jinping, China: chemical engineering at Tsinghua University, 1975 to 1979; our profile covers his later in-service study
• Emmanuel Macron, France: master's in public affairs at Sciences Po, then the Ecole nationale d'administration, 2004
• Narendra Modi, India: BA (1978) and MA (1983) in political science, the MA as an external student at Gujarat University; the authenticity of both degrees is the subject of a long-running controversy that we have not tried to settle

No university degree (two). Brazil's Luiz Inacio Lula da Silva left school after the second grade to work as a metalworker, and Italy's Giorgia Meloni holds a diploma from a hospitality institute; a claim on her CV that it was a language diploma drew controversy. No university appears twice across the 19.

How many world leaders have a university degree?

We found no source that gives a share of world leaders with a degree or a postgraduate degree, so our 19 are a checklist, not a sample, and the counts above should not be read as a rate. The nearest research is on where leaders studied and what that predicts. The Higher Education Policy Institute analysed 377 serving world leaders in 2017 and found that 58 had received higher education in Britain and 57 in the United States. An American Political Science Review study by Timothy Besley and Marta Reynal-Querol used data on more than 1,400 leaders between 1848 and 2004 and found that democracies are around 20% more likely to select highly educated leaders. A degree is a signal of selection; it is not a measured score. See also average IQ by education level for how far degrees and test scores overlap.

What is the average IQ of a world leader?

Nobody knows, because no one has measured it for heads of government. The nearest hard evidence is for politicians and executives as groups, not leaders of countries. A 2025 paper in the Journal of the European Economic Association linked Finnish men's military-conscript test results to later elections and found that local politicians score on a par with people in high-skill jobs or with an undergraduate degree, and national politicians higher still. In Swedish draft data, the median large-company chief executive scored above about 83% of men his age, roughly IQ 114 on the usual scale, as our article on the IQ sweet spot for leaders explains. Both say leaders as a group probably sit above average; neither gives a number for a president or prime minister.

For scale, an IQ of 120 sits at the 90.9th percentile, so about 1 person in 11 scores at or above it; our percentile calculator converts any score, and what an IQ of 120 means describes it. Simonton's presidential estimates average 134.5, but they come from biographies and expert ratings, not tests.

Where do the "smartest world leader" IQ lists come from?

Almost always from one of three places, none of which is a test:

• A hoax: in July 2001 an email credited an institute that did not exist with ranking the IQs of 12 US presidents (Clinton 182, George W. Bush 91); the Guardian printed it and later retracted it
• A list with no method: Netanyahu's "180" traces to a Business Insider list of the 19 smartest people the world has ever seen, published on 27 December 2011, which named him seventh and gave no source for the number; see his IQ profile
• A calculation from a guess: Trump's 156 was derived from an assumed SAT score that has never been released, as his IQ profile explains

Other figures online for Putin, Xi or Merkel appear on lists that cite no test or method, and we could not trace them to a source. Our profiles of Putin, Xi Jinping, Angela Merkel, Zelensky and Kim Jong Un state what the record supports; the ranges on them are our estimates, labelled as such. Our note on where celebrity IQ numbers come from explains how to read any of them, and the politicians hub lists them all.

Does a higher IQ make a better leader?

Not in the way the lists imply. In Simonton's 2006 study the IQ estimates correlated with historians' ratings of presidential greatness at between .31 and .35, about a tenth of the variation, and in his 2018 review a model with Intellectual Brilliance as the major predictor left out both IQ and Openness. The 2017 study behind the "IQ 120 sweet spot" measured how colleagues rated managers, not results. What the evidence supports is modest: intelligence helps, it is one trait among many, and no leader's number is known.

The honest answer to "who is the smartest world leader?" is that nobody can say. The one defensible ranking is of historic leaders from a 1926 study, the one defensible group is the 42 US presidents, and for everyone else the record is a degree. To read any score you meet, use our IQ bell curve and the note on why a score is a range. Related lists on this site: the US presidents, the UK prime ministers and the Founding Fathers.

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