Ordinaries
- Bonifatius (Josef) Sauer, O.S.B. † (Vicar Apostolic: 25 Aug 1920 to 12 Jan 1950)
- Vacant (1940-1962)
- Timotheus (Franz Xaver) Bitterli, O.S.B. † (Apostolic Administrator: 10 Mar 1962 to 22 May 1981)
- Vacant (1982-present)
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