Bonaduz (Romansh: Panaduz) is a municipality in the Imboden Region in the Swiss canton of the Grisons .

Bonaduz is first mentioned in 960 as Beneduces. Until 1854, the German-speaking hamlet of Sculms belonged to Bonaduz. Following a vote in that year, Sculms joined Versam .

Bonaduz has an area, as of 2006, of 14.5 km2 (5.6 sq mi). Of this area, 25.2% is used for agricultural purposes, while 61.3% is forested.