|Centuries:||3rd century – 4th century – 5th century|
|Decades:||280s 290s 300s – 310s – 320s 330s 340s|
|Years:||310 311 312 – 313 – 314 315 316|
- February 3 – Edict of Milan: Constantine the Great and co-emperor Licinius give religious freedom for all. They end the persecution of Christians in the Roman Empire.
- Emperor Maximinus II fights at Bosphorus.
- April 30 – Battle of Tzirallum: Licinius defeats his rival Maximinus II. He becomes Emperor of the Eastern Roman Empire. Maximinus runs away to Nicomedia and commits suicide.
- March 14 – Emperor Jin Huidi is killed by Liu Cong, ruler of the Xiongnu state (Han Zhao).
- Crown prince Jin Mindi, age 13, becomes the new emperor of the Jin Dynasty.