Starý zámek, Renaissance château in Chudenice, Czech Republic.

Starý zámek is a château in Chudenice, formed by rebuilding a medieval fortress. Its Renaissance phase had a regular plan with round bastions at three corners; the Angel Room inside keeps a vault from around 1600. The surviving appearance comes from a Classicist remodelling, and the single-storey east wing has flat projections with triangular gables, the left one carrying the passage into the courtyard.

The Černín family held Chudenice from the late 13th century, when Drslav of Chudenice is recorded in 1291. A Gothic fortress probably stood by 1358, when Černín and Kunrát founded a chaplaincy at the church; it is first documented in 1603, when the brothers Jindřich and Adam divided their inheritance and Adam received the fortress, already described as a stone-built structure with a courtyard and orchard. In 1776 the builder Karel Balling converted the château into flats for estate officials, and after 1948 it housed the Josef Dobrovský Museum.

The château is named Starý zámek (Old Château) to distinguish it from the nearby Nový zámek. Since 1948 it has belonged to the municipality, which used it for cultural purposes and housed the Josef Dobrovský Museum with its museum and château exhibition. The museum is named after the linguist Josef Dobrovský, who was born in nearby Chudenice.

The château stands in the centre of Chudenice and now houses the Josef Dobrovský Museum with its museum and château exhibition. The building is used for cultural purposes and also contains flats, so access to the interior may be limited to the museum's opening hours. The grounds include the wall of the former fortress and the château brewery in building no. 165.

The oldest surviving interior space is the Andělský pokoj (Angel Room), whose vault dates from around 1600 and recalls the Renaissance phase of the building. The château passed from the Černín family in 1948 to the municipality of Chudenice, which used it for a cinema, a library and housing. Jaroslav Kvapil, the librettist of Dvořák's Rusalka, was born here in 1868.