Year 1357 (MCCCLVII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar.
April 28 – Erik Magnusson is recognized as king of most of Sweden, in opposition to his father, king Magnus.
May 28 – Peter I becomes King of Portugal after the death of his father, Alfonso IV.
July 9 – Charles Bridge in Prague is founded.
King David II of Scotland is released by the English in return for a ransom.
Berdibek succeeds Jani Beg as Khan of the Blue Horde.
Sikandar I becomes Sultan of Bengal.
Rao Kanhadev becomes Rathore ruler of Marwar (now part of India).
Influenza is first identified as a disease.
The first public exhibition of the Shroud of Turin is recorded.
The Blue Horde unseat Ghazan II as the ruler of the Il-Khanate and appoint their own governor.
The Wat Phra Sri Rattana Mahathat (Famous Wat Yai) Temple is constructed in Phitsanulok, Thailand.
In France, the States-General passes Étienne Marcel's Great Ordinance in an attempt to impose limits on the monarchy, in particular in fiscal and monetary matters.
April 11 – King John I of Portugal (d. 1433)
date unknown
Art mac Art MacMurrough-Kavanagh, King of Leinster (d. 1417)
Hugo von Montfort, minstrel (d. 1423)
Fang Xiaoru, Confucian scholar (d. 1402)
Je Tsongkhapa, founder of the Geluk school of Tibetan Buddhism (d. 1419)
January 18 – Maria of Portugal, infanta (b. 1313)
May 28 – King Afonso IV of Portugal (b. 1291)
July 13 – Bartolus de Saxoferrato, Italian jurist (b. 1313)
date unknown
Ziauddin Barani, historian and political thinker of the Delhi Sultanate (b. 1285)
Jani Beg, Khan of the Blue Horde
Kazerouni, Masoud, Persian physician
Rao Tida, Rathore ruler of Marwar
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