The Evangelisch-reformierte Kirche Basel-Stadt (literally: Evangelical-Reformed Church of the Canton Basel-Stadt) is a Reformed denomination in the canton of Basel-Stadt. In 2004 it had 51,000 members in six German parishes with 3 German speaking congregations, one Italian, one French Reformed congregation^[1] and 49 ordained clergy. Member of the Schweizerischer Evangelischer Kirchenbund^[2] and the Conference of Churches on the Rhine.

The church was established by Johannes Oekolampad in 1529. For 400 years was the state church in Basel.^[3][4] Women ordination is allowed.