Adalbero II of Metz (Latin: Adalberonis or Adalberus; c. 958 - 14 December 1005) was a Catholic bishop of the 10th and 11th centuries.
He was the son of Frederick I, Duke of Upper Lorraine[2] and Beatrice of France, daughter of Hugh the Great.
[3] The death of Dietrich I of Metz on 7 September 984 prevented Adalbero from being officially appointed,[4] and the same year, on 16 October, he was chosen to become the bishop of Metz, leaving the Bishopric of Verdun to one of his cousins, Adalbero II of Ardennes.
[5] Adalbero begins a new period of nearly six centuries, during which the see is no longer involved in the affairs of the court and develops a strong soclesiastical life, although troubled frequently by conflicts between the citizens of Metz and the bishops as secular lords.
[6] At Metz, he favoured monastic reform in his diocese, strengthening the influence of the Cluny order in Lorraine by appealing, amongst others, to Guillaume de Volpiano.