Albuin was a 10th-century Catholic bishop belonging to the Aribonid noble family from Carinthia. Serving the churches of Säben and Brixen, he was first documented as bishop around 977. He was a loyal supporter of Emperor Otto II during various military conflicts and later accompanied King Henry II on a campaign to Italy. To improve accessibility to his diocese, he moved his episcopal residence from the rocky heights of Säben to the more developed area of Brixen around 990.