Poustka (German: Oed) is a municipality and village in Cheb District in the Karlovy Vary Region of the Czech Republic.

The highest point is the hill Kozinec at 551 m (1,808 ft) above sea level.

It used to be a strategic point, but later the original function of the castle changed and it became mainly an administrative centre.

[4] Among the notable owners of the castle were the families of Schlick, Juncker, Zedtwitz and Nostitz.

[5] The I/64 road from Františkovy Lázně to the Czech-German border in Aš runs through the municipality.