330
| Years: 326 327 328 329 - 330 - 331 332 333 334 | |
| Decades: 300s 310s 320s - 330s - 340s 350s 360s | |
| Centuries: 3rd century - 4th century - 5th century | |
Events
- May 11 - Constantine I refounds Byzantium, renames it New Rome, and moves the capital of the Roman Empire there from Rome. It is later known as Constantinople.
- Frumentius is the first bishop of Ethiopia (approximate date).
- Eustathius, patriarch of Antioch, is banished to Trajanopolis
- Basil of Caesarea, Eastern Orthodox saint (approximate date)
- St. Moses the Black, Christian monk
- Saint Macrina the Younger, Christian nun