What was Lee Kuan Yew’s IQ?
Lee Kuan Yew IQ: a Starred First in Cambridge law, a premiership from 1959 to 1990, and no published test.
Lee Kuan Yew’s IQ is not on record: no IQ test result has been published for him, and no score turned up in the searches and biographies checked for this profile. What is documented is a Starred First in Part II Law at Cambridge in 1949 and a premiership from 1959 to 1990, which support an estimated IQ of about 140–155.
Lee Kuan Yew’s estimated IQ
- At school he came first among all pupils in Singapore and Malaya and won a scholarship to Raffles College (Fitzwilliam College, Cambridge; Roots.gov.sg also records the scholarship).
- Graduated First Class in both parts of the Cambridge Law Tripos, with a Starred First for Part II Law in 1949 that Fitzwilliam College says placed him at the very top of his cohort and earned the college’s Whitlock Prize.
- Singapore’s Prime Minister’s Office records First Class Honours in Law, with a star for distinction in the final examinations (1949), and a call to the Bar at Middle Temple, London, in 1950.
- A founder of the People’s Action Party in 1954, then Prime Minister from June 5, 1959 to November 27, 1990, Senior Minister from 1990 to 2004 and Minister Mentor from 2004 to 2011 (Prime Minister’s Office).
No IQ test, school-leaving mark or Tripos mark has been published for Lee Kuan Yew, so the range is not anchored to any score. A Cambridge class ranks a student against others who sat the same papers; it is an achievement record, not a measurement on an IQ scale. Decades in office reflect judgment, circumstance and opportunity as well as reasoning, so this Lee Kuan Yew IQ estimate is a judgment from a public record, not a test result.
- Born
- September 16, 1923, Singapore
- Died
- March 23, 2015, Singapore, aged 91
- Education
- Telok Kurau English School; Raffles Institution; Raffles College; London School of Economics (one term, 1946); Fitzwilliam, Cambridge (law, from the 1947 Lent term)
- Law result
- First Class in both parts of the Law Tripos; Starred First for Part II Law, 1949 (Fitzwilliam College)
- Called to the Bar
- Middle Temple, London, 1950
- Public record
- A founder of the People’s Action Party, 1954; Prime Minister 1959–1990; Senior Minister 1990–2004; Minister Mentor 2004–2011
- Test on record
- No IQ test result published in the sources checked
- Estimated range here
- 140–155 (achievement and academic record)
What an IQ of 140–155 actually means
Set the claim aside for a moment. If someone genuinely scored in this range, here is what that would represent.
| Score range | Classification | Share of people | What it indicates |
|---|---|---|---|
| 85 – 114 | Average | ~68% | The range most people fall into. |
| 115 – 129 | Above average | ~13.6% | Roughly one person in seven. |
| 130 – 144 | Gifted | ~2% | The threshold most high-IQ societies use. |
| Above 144 | Highly gifted | ~0.1% | Figures above this range are extrapolated from the curve rather than measured. |
Percentages are approximate and describe a normal distribution. The same number means different things on tests with different standard deviations.
Thirty questions gives you a measured position on this exact scale — your score, your percentile and the ability breakdown behind it.
Find out in 30 minutes →Who Lee Kuan Yew was
Lee Kuan Yew was born on September 16, 1923 in Singapore and died there on March 23, 2015, aged 91, according to Roots.gov.sg and Wikidata. Wikipedia records that he enrolled at Telok Kurau English School in 1930. He then attended Raffles Institution, where Fitzwilliam College says he came first among all pupils in Singapore and Malaya, and won a scholarship to Raffles College. Roots.gov.sg says the Japanese Army’s arrival in 1942 disrupted his time there.
After the war he went to England to read law. The LSE history blog says he was registered at the London School of Economics for only one term in 1946, and moved to Cambridge because London was about three times as expensive. Fitzwilliam College, which its own account calls Fitzwilliam House for 1947, admitted him for the Lent term that year. He graduated First Class in both parts of the Tripos, took a Starred First for Part II Law in 1949 and won the college’s Whitlock Prize.
He was called to the Bar at Middle Temple, London, in 1950 and practised law in Singapore. In 1954 he was a founder of the People’s Action Party, and he was its Secretary-General until 1992. The Prime Minister’s Office lists him as Prime Minister from June 5, 1959 to November 27, 1990, Senior Minister from November 28, 1990 to August 11, 2004 and Minister Mentor from August 12, 2004 to May 20, 2011.
Fitzwilliam elected him an Honorary Fellow in 1969, and the Prime Minister’s Office lists him as an Honorary Bencher of Middle Temple in the same year. This profile covers his education, examination results and documented offices only. For how this site handles figures for other heads of government, see world leaders ranked by IQ: the only estimates, degrees and hoax lists.
By Elora Mercer, Celebrity Research WriterFigures checked by Leon Falkner, Data & Research AnalystReviewed by Aarav Vardhan, Editor-in-Chief · Last reviewed October 2026
Lee Kuan Yew: the documented record
The estimate above rests on this record. Every entry here is a matter of public fact, which is more than can be said for the number itself.
- 1923Born on September 16 in Singapore.
- 1930Enrolls at Telok Kurau English School; later attends Raffles Institution and wins a scholarship to Raffles College.
- 1942Studies at Raffles College are disrupted when the Japanese Army arrives in Singapore.
- 1947After one term at the London School of Economics in 1946, is admitted to Fitzwilliam, Cambridge, for the Lent term to read law.
- 1949Graduates First Class in both parts of the Law Tripos, with a Starred First for Part II Law.
- 1950Called to the Bar at Middle Temple, London.
- 1954A founder of the People’s Action Party.
- 1959Becomes Prime Minister of Singapore on June 5.
- 1990Leaves the premiership on November 27 and becomes Senior Minister on November 28.
- 2004Becomes Minister Mentor on August 12; holds the post until May 20, 2011.
- 2015Dies on March 23, aged 91.
Why no figure circulates
Following a claim back to its first appearance is the part almost nobody does — and it is what most people are actually asking.
Lee Kuan Yew’s IQ is not on record: no IQ test result has been published for him, and no score turned up in the searches and biographies checked for this profile. What Fitzwilliam College and the Prime Minister’s Office do record is a first place among pupils in Singapore and Malaya at school, a Starred First for Part II Law at Cambridge in 1949 and a premiership from 1959 to 1990, which support an estimated IQ of about 140–155.
The usual place to find a circulating number is an IQ-listing site or a forum thread. Searches for “Lee Kuan Yew IQ,” “Lee Kuan Yew IQ level” and “how smart is Lee Kuan Yew” return biographies and ranking-style articles, and none of them names a test, a date or an examiner. Opinions about someone’s intelligence, admiring or dismissive, are not test results. See where celebrity IQ numbers come from.
The usual proxy for an estimate, an entrance-exam or school-leaving mark, is missing too. No such mark, Tripos mark or class rank beyond the class itself appears in the sources checked, only the outcomes: first place among pupils in Singapore and Malaya, First Class in both parts of the Law Tripos, and a Starred First for Part II Law in 1949. Those are achievement records, not IQ tests: they rank a student against others who sat the same papers.
Among this site’s politics profiles, the record puts the Lee Kuan Yew IQ level close to Margaret Thatcher (135–150), who also qualified as a barrister and was Prime Minister from 1979 to 1990, and to Angela Merkel (138–155), whose estimate rests on a doctorate. His range starts five points above Thatcher’s because the Cambridge result was a Starred First. Like Xi Jinping, he has no published test. A score near 145 is what an IQ of 145 means: far above the average of 100.
How we read a number →Biodata page. Records First Class Honours in Law in 1949 with a star for distinction in the final examinations; called to the Bar, Middle Temple, London, in 1950; a founder of the People’s Action Party in 1954 and Secretary-General until 1992; Prime Minister June 5, 1959 – November 27, 1990, Senior Minister November 28, 1990 – August 11, 2004, Minister Mentor August 12, 2004 – May 20, 2011; died March 23, 2015. Gives no IQ or exam score.
Admitted for the 1947 Lent term (the page says Fitzwilliam House); graduated First Class in both parts of the Tripos; Starred First for Part II Law in 1949, placing him at the very top of his cohort; Whitlock Prize; Honorary Fellowship in 1969; at school in 1940 he came first among all pupils in Singapore and Malaya and won a scholarship to Raffles College. The words “double first” do not appear.
Gives his dates as September 16, 1923 – March 23, 2015 and records that he died at 3:18 am on March 23, 2015, aged 91; an academically gifted student at Raffles Institution who won a scholarship to Raffles College, disrupted by the arrival of the Japanese Army in 1942; a first-class law degree in 1949; called to the bar at Middle Temple in 1950.
Says he was registered at the London School of Economics for only one term in 1946, asked about a transfer to Cambridge in January 1947, and gave cost as the reason (London about three times as expensive as Cambridge).
Orientation and cross-check: born September 16, 1923; enrolled at Telok Kurau English School in 1930; “Starred First for Part II Law in 1949”; called to the bar at the Middle Temple in 1950; office dates (Prime Minister, Senior Minister and Minister Mentor; its Prime Minister end date is November 28, 1990, one day after the Prime Minister’s Office page). Wikidata Q131248 is the human, born 1923-09-16, died 2015-03-23, born and died in Singapore.
Used only for the comparison in the text: Thatcher 135–150 (barrister 1954, Prime Minister 1979–1990), Merkel 138–155 (doctorate), Xi Jinping 115–130 (no published test).
Looked for an IQ, school-leaving mark, Tripos mark or class rank in the official biographies above and in web searches for “lee kuan yew iq”, “lee kuan yew iq level”, “lee kuan yew iq estimate” and “how smart is lee kuan yew”. None gives a score or names a test.
The sources behind our estimate
The figures that circulate for Lee Kuan Yew, what we were able to confirm, and where the two diverge.
No IQ score for Lee Kuan Yew turned up under searches for “Lee Kuan Yew IQ,” “Lee Kuan Yew IQ level,” “Lee Kuan Yew IQ estimate” and “how smart is Lee Kuan Yew.” What turned up instead were biographies and ranking-style articles that give no test, date or examiner.
No published IQ test result exists for Lee Kuan Yew. The official biographies from Singapore’s Prime Minister’s Office, Roots.gov.sg and Fitzwilliam College record schooling, a degree class and offices held, and none gives an IQ or an examination mark. People also type “lee kuan yew iq reddit”; a forum post that names a number would be a guess, not a test result.
There is no circulating IQ score to weigh against this range, so the two numbers are only the ends of our own estimate. The 140–155 band is what his school, university and career record supports on its own, and nothing in the record tests it.
Want a number that does hold up? Every figure on this page is somebody’s claim. Take the 30-question test and get a percentile you can check rather than a figure you have to trust.
Lee Kuan Yew — frequently asked
What is Lee Kuan Yew’s IQ?
No IQ test result has ever been published for Lee Kuan Yew, so his IQ is not on record and no sourced figure circulates. His documented record — first place among pupils in Singapore and Malaya, a Starred First for Part II Law at Cambridge in 1949 and a premiership from 1959 to 1990 — supports an estimated IQ of about 140–155.
Is there a Lee Kuan Yew IQ estimate anywhere online?
None that cites a test. The biographies and ranking-style articles checked for this profile give no IQ score for him. A forum post that names a number would be a guess, not a test result.
How smart is Lee Kuan Yew?
“Smart” is a judgment, and no test score exists to settle it. What can be documented is first place among pupils in Singapore and Malaya at school, a Starred First for Part II Law at Cambridge in 1949 and a career from 1954; on that record this page estimates an IQ of about 140–155.
Did Lee Kuan Yew take an IQ test?
No IQ test result or IQ score for Lee Kuan Yew appears in any source checked for this profile. The record holds school and university results instead: a scholarship to Raffles College, First Class in both parts of the Cambridge Law Tripos and a Starred First in 1949. None of these is an IQ score.
What degree did Lee Kuan Yew earn at Cambridge?
He read law at Fitzwilliam, Cambridge, from the 1947 Lent term. Fitzwilliam College says he graduated First Class in both parts of the Tripos, with a Starred First for Part II Law in 1949. Singapore’s Prime Minister’s Office records First Class Honours in Law with a star for distinction.
Did Lee Kuan Yew study at the London School of Economics?
Briefly. The LSE history blog says he was registered at the London School of Economics for only one term in 1946, then moved to Cambridge, giving cost as the reason. He read law there and was called to the Bar at Middle Temple, London, in 1950.
How does Lee Kuan Yew’s estimated IQ compare with Margaret Thatcher’s and Angela Merkel’s?
IQ Metrics estimates Lee Kuan Yew at 140–155 from his academic and career record, against 135–150 for Margaret Thatcher and 138–155 for Angela Merkel. All of these figures are estimates from public records, not test scores.
How does my IQ compare with Lee Kuan Yew?
You can find out in about fifteen minutes. The IQ Metrics assessment is 30 questions, scored on the same 100-mean scale used throughout this page, so your result and the estimate above are at least expressed in the same units — one measured, one inferred. Once you have a number, the leaderboard shows where it would sit, and how we score and norm it explains the benchmarking.
Where does this estimate come from?
From the documented record rather than a test — the method is named above and set out in full under how we read a number. Compare it against the other politics profiles, starting with Thomas Jefferson.
- Take the 30-question IQ test — get a measured score and percentile of your own
- Average IQ by country — how the scale behaves across populations
- How IQ Metrics scores its assessment — the method behind our own number
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- More politics profiles — same field, same method
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Photograph by Rob Bogaerts, Nationaal Archief, CC0. Background removed for the portrait above. · Photograph by Raimond Spekking, CC BY-SA 4.0. Background removed for the portrait above. · Photograph by Yousuf Karsh, Ottawa, 1941 — public domain in Canada and the United States; the Library and Archives Canada scan is CC BY 2.0.
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