Kaiserstuhl is a village and former municipality in the district of Zurzach in the canton of Aargau in Switzerland. The small town is listed as a heritage site of national significance. On 1 January 2022 the former municipalities of Bad Zurzach, Baldingen, Böbikon, Kaiserstuhl, Rekingen, Rietheim, Rümikon and Wislikofen merged into the new municipality of Zurzach.