The Evangelical Reformed Church of the Canton of Schaffhausen is a Reformed state church in Schaffhausen. In 2004 it had 36,000 members and 30 congregations, served by 40 pastors. The church was formed in 1529. Member of the Federation of Swiss Protestant Churches
Congregations are in Altdorf, Bargen, Barzheim, Begginger, Beringen, Bibern, Buch, Buch, Buchberg, Büttenhardt, Dörflingen, Gaschlingen, Guntmadingen, Hallau, Hemishofen, Hemmental, Hofen, Lohn, Löhningen, Merishausen, Neuhausen, Neukirch, Oberhallau, Opfershofen, Osterfinger, Ramsen, Rüdlingen, Schleitheim, 7 congregations in Schaffhausen, Siblingen, Stein-Burg, Stein am Rhein, Stetten, Thayngen, Trasadingen
Its biggest and probabliy oldest church building is the Münster Schaffhausen.