The Stonávka (Polish: Stonawka) is a river in the Czech Republic, a left tributary of the Olza.

The name is derived from the Czech word sténat ('to groan'), meaning 'murmuring river'.

[3] The longest tributaries of the Stonávka are:[2] The river flows through the municipal territories of Komorní Lhotka, Hnojník, Třanovice, Těrlicko, Albrechtice, Stonava and Karviná.

Protected fish that live in the river include the common minnow.

The middle and lower course of the river are home to the Eurasian otter and common kingfisher.