911

Events 

 By place 
Africa
 Rebellion of the Kutama Berbers against the Fatimid Caliphate. The Kutama tribesmen have previously been the main supporters of the new Shi'ite regime.

 Europe 
 July 11 – The Treaty of Saint-Clair-sur-Epte is signed between Charles the Simple, King of France and Rollo, leader of the Vikings, allowing the latter to settle in Neustria, the origin of the Normans.
 September – Following the death of Louis the Child, last Carolingian ruler of the East Franks, Charles the Simple of France, is elected King of Lotharingia.
 The Fatimids begin the conquest of Sicily over their Aghlabid arch-rivals.

 By topic 
 Religion 
 April – Pope Anastasius III succeeds Pope Sergius III as the 120th pope.

 Deaths 
 April 14 – Pope Sergius III, pope of the Roman Catholic Church

 References