Catholic DiocesesinSwiss Confederation (Switzerland) | ![]() |
| Former Jurisdiction | Type | Became |
| Avenches Aventicum | Diocese | Suppressed into |
| France (Ukrainian Rite) Galliæ | Apostolic Exarchate | Now Diocese of Saint-Vladimir-le-Grand de Paris |
| Genève Geneven(sis) | Diocese | Suppressed into Archdiocese of Chambéry–Saint-Jean-de-Maurienne–Tarentaise |
| Lausanne Lausannen(sis) | Diocese | Now Diocese of Lausanne, Genève et Fribourg |
| Lausanne Lausannen(sis) | Diocese | Now Diocese of Lausanne, Genève et Fribourg |
| Lausanne et Genève Lausannen(sis) et Geneven(sis) | Diocese | Now Diocese of Lausanne, Genève et Fribourg |
| Octodurum / Martigny | Diocese | Now Diocese of Sion |
| Rhaetia / Raetia / Rhétie Rhætorum | Apostolic Prefecture | Suppressed into Diocese of Chur |
| Ticino | Apostolic Administration | Now Diocese of Lugano |
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