Centuries: 6th century BC - 5th century BC - 4th century BC
Decades: 530s BC 520s BC 510s BC 500s BC 490s BC - 480s BC - 470s BC 460s BC 450s BC 440s BC 430s BC
Years: 485 BC 484 BC 483 BC 482 BC 481 BC - 480 BC - 479 BC 478 BC 477 BC 476 BC 475 BC
- King Xerxes I of Persia sets out to conquer Greece.
- August 11 Battle of Thermopylae.
- Pleistarchus succeeds his father Leonidas as king of Sparta.
- August Battle of Artemisium Persian fleet fights an inconclusive battle with the Greek allied fleet.
- September 23 Battle of Salamis.
- Persian invasion of Corfu.
- Battle of Himera The Carthaginians under Hamilcar are defeated by the Greeks of Sicily, led by Gelon of Syracuse.
- Euripides, Greek playwright.
- Antiphon, Attic orator.
- Philolaus, Greek mathematician and philosopher (+ circa 405 BC) (estimated date).
- Leonidas and 300 Spartans (died at Thermopylae).
- Nabu-rimanni, Chaldean astronomer and mathematician (estimated date).