Egbert the One-Eyed (German: Ekbert der Einäugige) (died 4 April 994) is the second son of Wichmann the Elder and the younger brother of Wichmann the Younger.
He is thus of the elder line of the Billung family.
His nickname derives from the fact that he lost an eye in battle, an injury for which he blames Otto I and which partly explains his involvement in many insurrections.