427 BC

Millennium:	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:	430 BC 429 BC 428 BC – 427 BC – 426 BC 425 BC 424 BC

Year 427 BC was a year of the pre-Julian Roman calendar.

Events

Sparta's King Archidamus II is succeeded by his son Agis II.
Cleon says Mytilene must be destroyed. He decides not to kill the people.
Plataea surrenders to the Spartans and Thebans. Over 200 prisoners are put to death and Plataea is destroyed.
The civil war in Corcyra results in a victory of the democrats over the oligarchs.
The Quaestorship is opened to the Plebs.

for more information, see Category:427 BC births.

Plato, Greek philosopher (d. c. 347 BC)
Xenophon, Greek historian, soldier, mercenary and an admirer of Socrates (d. 354 BC)