Year 519 (DXIX) was a common year starting on Tuesday of the Julian calendar. At the time, it was known in the Roman Empire as the Year of the Consulship of Iustinus and Cillica (or, less frequently, year 1272 Ab urbe condita). The denomination 519 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.

• Cerdic becomes the first king of the Kingdom of Wessex^[1] (according to the Anglo-Saxon Chronicle).

• The synagogues of Ravenna are burnt down in a riot; Theodoric the Great orders them to be rebuilt at Ravenna's expense.
• August 28 – The end of Theodoric's tricennium, a thirty year statute of limitations after which unlawful seizures of land during his 489 invasion of Italy can no longer be contested.

• Anjang becomes ruler of the Korean kingdom of Goguryeo.^[2]

• March 28 – The Eastern and Western churches reconcile their differences, ending the Acacian Schism.
• Jacob of Serugh becomes bishop of Batnan (near modern Diyarbakir, Turkey).
• The Memoirs of Eminent Monks is compiled.
• In Ireland, the Diocese of Kildare is erected.

• Xuan Di, emperor of the Liang Dynasty (d. 562)

• Munjamyeong of Goguryeo, 21st king of Goguryeo^[2]