Vivilo (also Vivolus) was the first bishop of the Roman Catholic Diocese of Passau after the reorganization of the Bavarian Catholic church, appointed by Saint Boniface in 739. Vivilo is the only one of four new bishops mentioned in a letter by Pope Gregory III confirming the establishments of four dioceses in Bavaria—that of Passau, Regensburg, Salzburg, and Freising. 
Due to a lack of sources, there is little known about Vivilo. Documents and letters from the tenth century claimed that Vivilo had been Bishop of Lauriacum before his Passover, and then moved his seat to Passau (Lorcher fakes). Thus, claims of the Diocese of Passau should be based on a privilege against the Archbishopric of Salzburg for the church organization in the East.
- Lins, Joseph (1913). "Passau, Diocese of". In Charles George Herbermann; et al. (eds.). The Catholic Encyclopedia: An International Work of Reference on the Constitution, Doctrine, Discipline, and History of the Catholic Church. Encyclopedia Press. pp. 519–21.
- "Reihenfolge der Bischöfe - Bistum Passau". www.bistum-passau.de.
- Maß, Josef (2005). "Der hl. Bonifatius und das Bistum Freising". Beiträge zur altbayerischen Kirchengeschichte (in German). 48: 9–27.
- Egon Boshof (Hrsg.): Die Regesten der Bischöfe von Passau 731–1206. München 1992, Band 1, p.1–3.
- Ekkart Sauser (2002). "Vivilo". bautz.de. columns 1499–1500. Archived from the original on June 29, 2007.
- Walter Brandmüller (Hrsg.): Handbuch der bayerischen Kirchengeschichte. St. Ottilien 1998, Band 1, p. 38–45.
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