Bad Dürrheim (German pronunciation: [baːt ˈdʏʁhaɪm] ; Low Alemannic: Diirä) is a town in the district of Schwarzwald-Baar, in Baden-Württemberg, Germany. It is situated east of the Black Forest , 8 km (5.0 mi) north of Donaueschingen , and 6 km (3.7 mi) southeast of Villingen.

From 1951 until 1978, Bad Dürrheim was a location of a broadcasting transmitter for mediumwave.