- January 19 - Theodosius I is elevated as Roman Emperor at Sirmium.
- Ardeshir II becomes King of Persia.
- Gratianus refuses title of eastern Roman Emperor.
- Nun Yax Ayin become ruler of Tikal.
- War of Feishui in China.
- Theodosius I makes peace with king Fritigern of the Visigoths
- Celtic village of Cularo renamed Gratianopolis, later becomes Grenoble
- Settlement of Jew Town in India by Jews.
- Niall becomes King of Ireland