The 310s decade ran from January 1, 310, to December 31, 319.
Significant people
- Tiridates III, King of Armenia (287–330)
- Ousanas, King of Axum (c.310-c.320)
- Huai, Emperor of China (307 - 313)
- Min, Emperor of China (313 - 317)
- Yuan, Emperor of China (317 - 322)
- Fíacha Sroiptine, High King of Ireland (285-322)
- Ōjin, Emperor of Japan, 270-310
- Nintoku, Emperor of Japan, 313-399
- Shapur II, Sassanid dynasty King of Persia (309-379)
- Galerius, Roman Emperor (305-311)
- Constantine, Roman Emperor (306-337)
- Maxentius, Roman Emperor (306-312)
- Licinius, Roman Emperor (308-324)
- Maximinus II, Roman Emperor (311-313)
- Alexander of Byzantium, Bishop of Byzantium (314-337)
- Pope Eusebius, Pope of the Roman Catholic Church (309-310)
- Metrophanes of Byzantium, Bishop of Byzantium (306-314)
- Miltiades, Pope of the Roman Catholic Church (311-314)
- Sylvester I, Pope of the Roman Catholic Church (314-335)
- Girim, King of Silla (298–310)
- Heulhae, King of Silla (310–356)