The Coup of Kaiserswerth (German: Staatsstreich von Kaiserswerth) in 1062 is a hitherto unprecedented action of a group of Imperial Princes under the leadership of Archbishop Anno II of Cologne against Empress Agnes, ruling the Empire on behalf of her underage son, Henry IV, and against her chosen sub-regent, Bishop Henry of Augsburg.
By kidnapping the young king and successfully demanding the handover of the Imperial Regalia, the group gains control of the reins of power in the Holy Roman Empire.
