1205

Events 
 January 6 – Philip of Swabia becomes King of the Romans
 April 14 – Battle of Adrianople between Bulgars and Latins
 August 20 – Following certain news of Baldwin I's death, Henry of Flanders is crowned Emperor of the Latin Empire

 Births 
 Walter IV of Brienne
 Wenceslaus I, King of Bohemia

 Deaths 
 April 1 – King Amalric II of Jerusalem (born 1145)
 May 7 – Ladislaus III of Hungary (born 1201)
 June 14 – Walter III of Brienne
 July 13 – Hubert Walter, Archbishop of Canterbury
 Alexius V, Byzantine Emperor
 Baldwin I of Constantinople (born 1172)
 Enrico Dandolo, Doge of Venice
 Isabella of Jerusalem
 Žvelgaitis, Lithuanian duke