The Battle of Trautenau or Battle of Trutnov was fought on 27 June 1866, during the Austro-Prussian War. It was the only battle of the war that ended in an Austrian victory over the Prussians, but at a large cost.

Trutnov is a town in the Hradec Králové Region of the Czech Republic. It has about 30,000 inhabitants. The historic town centre is well preserved and is protected by law as an urban monument zone.