|Centuries:||5th century – 6th century – 7th century|
|Decades:||520s 530s 540s – 550s – 560s 570s 580s|
|Years:||554 555 556 – 557 – 558 559 560|
|557 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||1310|
|Bahá'í calendar||−1287 – −1286|
|English Regnal year||N/A|
|Chinese calendar||丙子年 (Fire Rat)
3253 or 3193
— to —
丁丑年 (Fire Ox)
3254 or 3194
|- Vikram Samvat||613–614|
|- Shaka Samvat||479–480|
|- Kali Yuga||3658–3659|
|Igbo calendar||−443 – −442|
|Iranian calendar||65 BP – 64 BP|
|Islamic calendar||67 BH – 66 BH|
|Minguo calendar||1355 before ROC
|Thai solar calendar||1100|
|Wikimedia Commons has media related to 557.|
Year 557 (DLVII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. The denomination 557 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.
- The Avars arrive in the northern region of the Caucasus between the Black Sea and the Caspian Sea. They send envoys to the Byzantines in Lazica (modern Georgia). Like the Huns, the Avars are the former elite of a central Asian federation who has been forced to flee westwards.
- December 14 – 557 Constantinople earthquake.
- The Western Wei dynasty ends: Yuwen Hu deposes emperor Gong Di and places Yuwen Tai's son Xiaomin on the throne. Yuwen Hu becomes regent and establishes the Northern Zhou dynasty in China.
- Ming Di is made emperor after his younger brother Xiao Min Di is arrested while trying to assume power. Xiao Min Di is deposed and executed by Yuwen Hu.
- The Liang dynasty ends: Chen Wu Di, a distinguished general, becomes the first emperor of the Chen dynasty in Southern China.
- The Göktürks under Muqan Qaghan ally with the Persian Empire and destroy the Hephthalites (White Huns) in Central Asia.
- King Chlothar I of the Franks founds the Abbey of St. Medard at Soissons (Northern France).
- The Jiming Temple in Nanjing is built. The Buddhist pagoda is located near Xuanwu Lake.
- Dushun, Chinese (Buddhist) patriarch (d. 640)
- Gao Wei, emperor of Northern Qi (d. 577)
- Ouyang Xun, Confucian scholar (d. 641)
- Cyriacus of Athens, anchorite and saint (b. 448)
- Gong Di, emperor of Western Wei (b. 537)
- Xiao Min Di, emperor of Northern Zhou (b. 542)
- Rome at War (AD 293—696), p. 59. Michael Whitby, 2002. ISBN 1-84176-359-4