420s BC

Millennium: 1st millennium BC
Centuries: 6th century BC5th century BC4th century BC
Decades: 450s BC 440s BC 430s BC420s BC410s 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 – Architecture
Establishments – Disestablishments

Events and trends

Deaths

Significant people