Bad Zurzach is a village located in the district of Zurzach within the canton of Aargau, Switzerland. It serves as the administrative seat of the district.
On January 1, 2022, Bad Zurzach ceased to be an independent municipality. It merged with the municipalities of Baldingen, Böbikon, Kaiserstuhl, Rekingen, Rietheim, Rümikon, and Wislikofen to form the new municipality of Zurzach.