Learn more about 500s BC
 Events and trends
- September 13, 509 BC - The temple of Jupiter on Rome's Capitoline Hill is dedicated on the ides of September.
- 508 BC - Office of pontifex maximus created in Rome.
- 507 BC - Cleisthenes, Greek reformer, takes power and increases democracy.
- 506 BC - Battle of Bai ju: Forces of the Kingdom of Wu under Sun Tzu defeat the forces of Chu.
- 505 BC - First pair of Roman consuls elected.
- December 4, 502 BC - Solar eclipse darkens Egypt. (computed, no clear historical record of observation)
- 502 BC - The Latin League defeats the Etruscans under Lars Porsenna at Aricia.
- 502 BC - Naxos rebels against Persian domination sparking the Ionian Revolt.
- 501 BC - Cleisthenes reforms democracy in Athens.
- 501 BC - Naxos is attacked by the Persian Empire.
- 501 BC - In response to threats by the Sabines, Rome creates the office of dictator.
- 501 BC - Confucius is appointed governor of Chung-tu.
- 501 BC - Gadir (present-day Cádiz) is captured by Carthage. (approximate date)
- 500 BC - Bantu-speaking people migrate into south-west Uganda from the west. (approximate date)
- 500 BC - Refugees from Teos resettle Abdera.
- 500 BC - Darius I of Persia proclaims that Aramaic be the official language of the western half of his empire.
- 500 BC - Signifies the end of the Nordic Bronze Age civilization in Oscar Montelius periodization system and begins the Pre-Roman Iron Age.
- 500 BC - Foundation of first republic in Vaishali Bihar India.
- 500 BC - World population: 100,000,000 <ref>an average of figures from different sources as listed at the US Census Bureau's Historical Estimates of World Population</ref>
- The Gutaii tribe began around this time, in Middle and Southern Africa.
 Significant people
See also: List of state leaders in 500 BC
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