| content |
| Millennia: | 1st millennium BC |
| Centuries: | 6th century BC - 5th century BC - 4th century BC |
| Decades: | 450s BC 440s BC 430s BC - 420s BC - 410s BC 400s BC 390s BC |
| Years: | 429 BC 428 BC 427 BC 426 BC 425 BC 424 BC 423 BC 422 BC 421 BC 420 BC |
| Categories: | Births - Deaths - State leaders - Sovereign states Establishments - Disestablishments |
Events and trends
- Peloponnesian War
- 429 BC — Battle of Chalcis — Chalcidians and their allies defeat Athens.
- 429 BC — Battle of Naupactus — Phormio defeats the Peloponnesian fleet.
- 429 BC — An outbreak of plague kills over one-third of the population of Athens.
Deaths
Significant people
