323
| Years: 319 320 321 322 - 323 - 324 325 326 327 | |
| Decades: 290s 300s 310s - 320s - 330s 340s 350s | |
| Centuries: 3rd century - 4th century - 5th century | |
Events
- July 3 - Battle of Adrianople: Constantine defeats Licinius, forcing Licinius to retreat to Byzantium.
- September 18 - Battle of Chrysopolis: Crispus, defeats Licinius' naval fleet, allowing his father Constantine the ability to cross over the Bosporus into Licinius' Asian provinces.
- Jin Ming Di succeeds Jin Yuan Di as emperor of China
Deaths
- Jin Yuan Di, emperor of China