Altmann (bishop of Passau)

Altmann (c. 1015 – 8 August 1091) was the Bishop of Passau from 1065 until his death. He was an important representative of the Gregorian reforms, monastic founder and reformer. He is venerated as a saint. Although he was not recognized through a formal canonization process, he is considered a saint in the Catholic Church and is commemorated on August 8.