1377

Events 
 January 17 – Gregory XI enters Rome.
 January 27 – The Bad Parliament begins sitting.
 February 23 – The Bad Parliament dissolved.
 May – Continuous riots in Rome induce Gregory XI to remove temporarily to Anagui.
 May 22 – Gregory XI issues five Bulls in which the opinions of John Wyclif are condemned.
 June 21 – Edward III dies at age 65.
 July 16 – Coronation of 10-year-old Richard II.
 October 13 – Richard II's first parliament meets.
 October 18 – Andronicus IV Palaeologus crowned emperor in Constantinople.
 Informed that khan Urus of the White Horde has died, Timur Lenk sends Tokhtamish to take the Horde throne, but the successor of Urus defeats him.
 Mamluk sultan Sha'ban II is succeeded by 'Ali II.
 Muhammad al-Mutawakkil I is briefly deposed this year as Abbasid puppet caliph of the Mamluks, Zakariyya' al-Mu'tasim taking the throne for that period.
 A sermon by a German monk states "the game of cards has come to us this year" and prohibitions against cards are issued by John of Castile and the cities of Florence and Basel.
 Papal legate to northern Italy Robert of Geneva (the future Clement VII) pillages Cesena and 4,000 antipapal rebels are massacred.