Decades: 440s BC 430s BC 420s BC 410s BC 400s BC - 390s BC - 380s BC 370s BC 360s BC 350s BC 340s BC

Years: 404 BC 403 BC 402 BC 401 BC 400 BC - 399 BC - 398 BC 397 BC 396 BC 395 BC 394 BC

• The Greek philosopher Socrates is condemned for impiety and corrupting the youth. He refuses to flee into exile, and is sentenced to death by drinking hemlock. He does so with good cheer as friends look on.
• Agasilaus II succeeds his brother Agis II as king of Sparta.