Short answer: No IQ test or scholarly IQ estimate exists for Hannibal Barca. He lived from 247 BC to about 183–181 BC, long before the 1450–1850 window of Catharine Cox's 1926 study, the main source for historical estimates. The evidence is his record: the Alpine crossing of 218 BC, the double envelopment at Cannae in 216 BC, 15 years in southern Italy, and sweeping reforms as Carthage's chief magistrate.
At a glance
| Estimated IQ | No scholarly estimate |
|---|---|
| Basis of estimate | None; he predates the 1450–1850 sample of Cox (1926) |
| Measured score | None on record |
| Born – died | 247 BC, Carthage – 183–181 BC, Libyssa, Bithynia |
| Field | Military command, statecraft |
| Signature achievement | Cannae, 2 August 216 BC |
| Education | Greek, taught by the historian Sosylus of Lacedaemon |
| Comparable minds | Alexander the Great, Julius Caesar, Napoleon |
No Score, and No Way to Build One
Hannibal died more than two millennia before the first IQ test in 1905. A retrospective estimate would need childhood records, letters and school performance. Catharine Cox's 1926 study, the only systematic attempt at historical IQ estimation, limited itself to people born between 1450 and 1850 for exactly that reason. Hannibal is not in it, and we found no later published figure.
The source problem is worse than age. Rome razed Carthage in 146 BC. What we know of Hannibal comes chiefly from Polybius and Livy, writers on the side that defeated him. Any IQ number online for Hannibal is a guess with no method behind it.
For his life in full, see our Hannibal profile. For why ancient figures cannot be scored, read historical IQ estimates explained.
Cannae, 2 August 216 BC
The best evidence of Hannibal's mind is a single day in Apulia. Rome fielded roughly 86,000 men. Hannibal had about 50,000.
He drew up his line in a crescent that bulged toward the enemy, then let the center fall back as the Roman infantry pressed forward. His African infantry, held on the flanks, closed inward. His cavalry, having driven off the Roman horse, struck the legions from behind. The Romans were surrounded in open country by a smaller army.
Polybius put Roman and allied dead at 70,000; Livy gives 45,500 infantry and 2,700 cavalry killed. Either way, it was one of the worst single-day defeats in Roman history. The Prussian strategist Alfred von Schlieffen built his operational doctrine around Cannae, and Dwight Eisenhower later observed that commanders never stop trying to repeat it. The plan required reading the enemy's likely behavior in advance and coordinating infantry and cavalry across the whole field.
The Alps and 15 Years in Italy
In 218 BC Hannibal marched from Spain over the Pyrenees and the Alps into Italy. Ancient figures put his army at about 38,000 infantry, 8,000 cavalry and 38 elephants before the mountains. He emerged with roughly 20,000 infantry and 6,000 cavalry, and few elephants survived.
With that reduced force he defeated a Roman army at the Trebia in December 218 BC and another at Lake Trasimene in 217 BC, a year before Cannae. He then held most of southern Italy for some 15 years, deep in enemy territory. Before he sailed home, he left a record of his campaign engraved on bronze tablets, in Punic and in Greek, at the temple of Juno Lacinia near Croton.
A Carthaginian Educated in Greek
Hannibal's military thinking came partly from his father's campaigns and partly from Greek tutors. The most famous was Sosylus of Lacedaemon, who taught him Greek and later wrote a seven-book history of his deeds, now lost except for fragments.
The bilingual tablets at Croton confirm he worked comfortably across two languages and two cultures. That fluency suited his later career as an adviser at the Hellenistic courts of Antiochus III and Prusias I of Bithynia. This is the profile of a cosmopolitan, well-schooled aristocrat, not a battlefield natural who stumbled into greatness.
The Reformer Carthage Elected
After Rome's victory, Hannibal turned to politics. Elected suffete, Carthage's chief magistrate, he attacked the entrenched oligarchy. Members of the powerful court of One Hundred and Four had served for life; he cut their terms to one year and barred consecutive terms. He reformed the city's finances and paid the war indemnity owed to Rome.
His political enemies struck back, and around 195 BC he fled into exile. He advised Antiochus III, then Prusias I of Bithynia. When Roman soldiers surrounded his refuge at Libyssa, he took poison. The reforms show a mind that could diagnose an institution as clearly as a battlefield.
Hannibal Beside Alexander, Caesar and Napoleon
Hannibal himself ranked the great generals. According to Appian, he named Alexander first, Pyrrhus of Epirus second and himself third. Neither Alexander nor Julius Caesar has a scholarly IQ estimate either.
Among commanders, only those born after 1450 have research-based figures. Napoleon is the benchmark: Catharine Cox rated him 135 in childhood and 140 in early adulthood, a level described on our IQ 140 page. For the full comparison, see military leaders ranked by IQ.
Brilliant Battles, a Lost War
Hannibal won the famous battles and lost the war. Rome refused to make peace after Cannae, raised new armies and wore him down. When Scipio carried the war to Africa, Carthage recalled Hannibal, and Scipio defeated him at Zama in 202 BC.
That outcome is the strongest argument against ranking commanders by imagined IQ scores. Tactical brilliance could not overcome Rome's manpower, its alliances in Italy or the politics of Carthage. An IQ figure, even a real one, would explain Cannae. It could not explain Zama.
How We Assessed This
We found no published historiometric IQ estimate for Hannibal from any named researcher, so we report none. Casualty and army figures are ancient estimates and vary between Polybius and Livy; we give both where they differ.
Frequently asked questions
What was Hannibal's IQ?
It is unknown. Hannibal Barca lived from 247 BC to about 183–181 BC, and no IQ test or scholarly estimate exists. The main study of historical IQ, by Catharine Cox in 1926, covered only people born between 1450 and 1850. Online numbers for Hannibal have no documented source.
Was Hannibal a genius?
As a tactician, the record says yes. At Cannae in 216 BC he surrounded and destroyed a Roman army far larger than his own, a maneuver still taught at military academies. He also spoke Greek, reformed Carthage's government and finances, and advised two Hellenistic kings. His raw intelligence, however, cannot be measured.
Who had a higher IQ, Hannibal or Alexander the Great?
Neither has a scholarly IQ estimate, so the question cannot be answered with data. Hannibal himself, according to Appian, ranked Alexander as the greatest general, Pyrrhus second and himself third. Compare their records on our Alexander the Great IQ page.
Why did Hannibal lose the Second Punic War after winning at Cannae?
Rome refused to make peace after Cannae and kept raising new armies. Hannibal held much of southern Italy for about 15 years but never took Rome. When Scipio invaded Africa, Carthage recalled Hannibal, and Scipio defeated him at Zama in 202 BC.
Did Hannibal speak Greek?
Yes. His tutor Sosylus of Lacedaemon taught him Greek and later wrote a history of his campaigns. Before leaving Italy, Hannibal set up bronze tablets recording his expedition in both Punic and Greek at the temple of Juno Lacinia near Croton.
Sources
- Wikipedia: Hannibal — Dates, Alps figures, Trebia, Trasimene, suffete reforms, exile, death, Appian's ranking
- Wikipedia: Battle of Cannae — Date, army sizes, Polybius and Livy casualty figures, Schlieffen and Eisenhower
- Wikipedia: Sosylus of Lacedaemon — Hannibal's Greek tutor and historian
- Simonton, Galton, Terman, Cox (Gifted Child Quarterly, 2020) — Cox's 1450–1850 sample rule
- Riot IQ: What Was Napoleon's IQ? — Cox's figures for Napoleon, used for comparison
Editorial standard: IQ figures for historical figures are retrospective estimates and are labeled as such; scores for living people appear only when the person disclosed them or a reputable outlet reported them. Corrections: contact the editors.