1080s

The 1080s was the decade that started on January 1, 1080 and ended on December 31, 1089. It is distinct from the decade known as the 109th decade which began on January 1, 1081 and ended on December 31, 1090.

 Events and trends 
 1080 King Alfonso VI of Castile establishes Roman liturgy in Catholic church in place of Mozarabic Rite.
 1084 Saint Bruno founds the Carthusian Order of monks 
 1086 Emperor Shirakawa starts his cloistered rule
 1087
 William II becomes king of England
 End of the formal reign of Emperor Shirakawa, but not of his cloistered rule
 Emperor Horikawa ascends to the throne of Japan
 The remains of Saint Nicholas were brought to Bari
 1088
 Succession of Pope Urban II (1088–1099)
 Work begins on the third and largest church at Cluny