|319 by topic|
|Ab urbe condita||1072|
|Balinese saka calendar||240–241|
|Chinese calendar||戊寅年 (Earth Tiger)|
3015 or 2955
— to —
己卯年 (Earth Rabbit)
3016 or 2956
|- Vikram Samvat||375–376|
|- Shaka Samvat||240–241|
|- Kali Yuga||3419–3420|
|Iranian calendar||303 BP – 302 BP|
|Islamic calendar||312 BH – 311 BH|
|Minguo calendar||1593 before ROC|
|Seleucid era||630/631 AG|
|Thai solar calendar||861–862|
445 or 64 or −708
— to —
446 or 65 or −707
Year 319 (CCCXIX) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Constantinus and Licinius (or, less frequently, year 1072 Ab urbe condita). The denomination 319 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
- Emperor Constantine the Great prohibits the separation of the families of slaves, during a change in ownership.
- King Chandragupta I succeeds his father Ghatotkacha, as ruler of the Gupta Empire.
- Christianity is introduced in Colchis, present-day Georgia.
- Arius travels to Nicomedia at the invitation of Bishop Eusebius, after having been accused of heresy and condemned by Alexander, the Patriarch of Alexandria. This gives rise to the Arian Controversy.
- Murong Jun, Chinese emperor of the Former Yan (d. 360)
- Du Zeng, Chinese general and rebel leader
- Ghatotkacha, Indian ruler of the Gupta Empire
- Theodore Stratelates, Greek general and martyr (b. 281)