: 5th century BC
- 4th century BC
- 3rd century BC
Decades: 440s BC 430s BC 420s BC 410s BC 400s BC - 390s BC - 380s BC 370s BC 360s BC 350s BC 340s BC
Years: 403 BC 402 BC 401 BC 400 BC 399 BC - 398 BC - 397 BC 396 BC 395 BC 394 BC 393 BC
- With the death of Amyrtaeus, the Twenty-eighth Dynasty ends. Nepherites I becomes king of Egypt, and founds the Twenty-ninth Dynasty.
- Dionysius, tyrant of Syracuse, breaks his peace treaty with Carthage and attempts to seize control of Sicily; Himilco, king of Carthage, responds and lays siege to Syracuse