The Satu Mare Synagogue, also known as the Decebal Street Synagogue, is a Neolog Jewish congregation and synagogue, located at 4 Decebal Street, in Satu Mare, Transylvania, Romania. The synagogue is included on the National Register of Historic Monuments in Romania. Designed in the Moorish Revival style, the synagogue was completed in 1870. It has a tripartite façade, with the prayer house and the temple beside the facade. In 2004, a Holocaust memorial was dedicated in the synagogue's courtyard.