Kunžak lies approximately 17 kilometres (11 mi) east of Jindřichův Hradec, 55 km (34 mi) east of České Budějovice, and 122 km (76 mi) south-east of Prague. The stream Koštěnický potok originates in the municipal territory.
Administrative parts
The villages of Kaproun, Mosty, Suchdol, Terezín, Valtínov and Zvůle are administrative parts of Kunžak.