330

330 (CCCXXX) was a common year starting on Thursday of the Julian calendar, the 330th year of the Common Era (CE) and Anno Domini (AD) designations, the 330th year of the 1st millennium, the 30th year of the 4th century, and the 1st year of the 330s decade. As of the start of 330, the Gregorian calendar was 1 day ahead of the Julian calendar, which was the dominant calendar of the time.

• May 11 – Emperor Constantine the Great dedicates Constantinople, or Nova Roma (modern Istanbul), and moves the capital of the Roman Empire there from Rome. He spent 4 years building the city on the site of ancient Byzantium. He chose the site for its location (a seaport with easy access to Anatolia and the Danube).
• The Goths devastate the city of Tanais in the Don River delta.

• Ezana, king of Axum, extends his area of control to the west. He defeats the Nobates, and destroys the kingdom of Meroë.

• Frumentius is the first bishop of Ethiopia (approximate date).
• Eustathius, Patriarch of Antioch, is banished to Trajanopolis.
• The Bible is translated into the Gothic language by Wulfila.
• Pagan temples are starting to be abandoned, destroyed or left to fall into disrepair, except those that are turned into Christian churches.

• Basil the Great, bishop of Caesarea Mazaca (d. 379)
• Macrina the Younger, Christian nun and saint (d. 379)
• Moses the Black, Christian monk and priest (d. 405)
• Victricius, missionary and bishop of Rouen (approximate date)

for more information, see Category:330 deaths.

• Iamblichus, neoplatonist philosopher