317
| Years: 313 314 315 316 - 317 - 318 319 320 321 | |
| Decades: 280s 290s 300s - 310s - 320s 330s 340s | |
| Centuries: 3rd century - 4th century - 5th century | |
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Events
- Jin Yuan Di succeeds Jin Min Di; end of the western and beginning of the eastern Jin Dynasty
- King Mirian II of Caucasian Iberia declares Christianity the official state religion
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Births
- February - Constantine II, Roman Emperor
- St. Martin of Tours is (presumably) born -> 316
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