C. S. Lewis IQ

Clive Staples Lewis was born in Belfast in 1898. He was tutored privately by William Kirkpatrick, served in the trenches in 1917 and was wounded, then took a rare triple first at Oxford in classics, philosophy and English. He taught at Oxford for nearly 30 years and became professor at Cambridge in 1954. A convert from atheism, he wrote Mere Christianity and The Chronicles of Narnia. He died on 22 November 1963.

No figure exists. LifeScore lists about 155 as an editorial marker, range 140 to 170. It rests on three first-class degrees at Oxford, a famously powerful memory and a career as a leading scholar of medieval and Renaissance literature.

Friends and students reported that he could recall long passages of books he had read, often down to the page. That is anecdotal, but it fits his ability to quote widely across classical and English literature from memory.

Yes. They met at Oxford in 1926 and became close friends. Tolkien helped bring Lewis back to Christianity in 1931, and Lewis encouraged Tolkien to finish The Lord of the Rings. Their friendship cooled in later years.

Lewis published The Lion, the Witch and the Wardrobe first, in 1950, and The Magician's Nephew, a prequel, in 1955. Later editions number the books in story order, starting with The Magician's Nephew. Lewis once said in a letter that he slightly preferred story order, but many readers still start with the Wardrobe.

Lewis argued like a logician. His apologetics set out premises and alternatives, as in his "liar, lunatic or Lord" argument. Whatever readers think of his conclusions, the structure is deliberate deductive reasoning in plain prose.

What supports it

• Oxford records his triple first.
• He held a chair at Cambridge in medieval and Renaissance literature.
• His scholarly books remain cited in literary studies.

What it cannot prove

• Accounts of his memory are anecdotal.
• Literary genius is mostly verbal and creative; an IQ test samples only part of that, and style cannot be scored.
• An editorial marker is a comparison aid built from achievement, not a measurement, and two careful readers could place it ten points apart.

C. S. Lewis's IQ is represented here by a retrospective estimate of 155, not a verified test result. C. S. Lewis is best known for exceptional logical argument. The useful question is what the surviving evidence shows, not whether a precise modern score can be recovered.

Combative in argument, warm in friendship. A logician who wrote fairy tales.

The dominant archetype here is The Debater. This archetype shapes decision patterns: what feels natural, what creates friction, and what blind spots tend to emerge.

Estimated IQ is 155. This is a rough estimate based on documented accomplishments and contemporary accounts, not a literal measurement.

He died on the same day as John F. Kennedy and Aldous Huxley, so his death was barely reported.

C. S. Lewis' estimate of 155 falls in the genius level IQ range. Want your own number rather than C.'s? Take the free IQ test or the quick IQ test. See what an IQ of 155 means, place it on the IQ chart or check how rare it is with the IQ rarity calculator.