Žumberk (German: Sonnenberg) is a market town in Chrudim District in the Pardubice Region of the Czech Republic.

Žumberk consists of three municipal parts (in brackets population according to the 2021 census):[2] The original German name Sonnenberg means "sunny mountain".

The Ležák River flows through the market town.

[4] There are no railways or major roads passing through the municipality.

The main landmark of Žumberk is the Church of All Saints.