The Battle of the Katzbach on 26 August 1813, was a major battle of the Napoleonic Wars between the forces of the First French Empire under Marshal MacDonald and a Russo-Prussian army of the Sixth Coalition under Prussian Marshal Graf (Count) von Blücher. It occurred during a heavy thunderstorm at the Katzbach river between Wahlstatt and Liegnitz in the Prussian province of Silesia. Taking place the same day as the Battle of Dresden, it resulted in a Coalition victory, with the French retreating to Saxony.

In the War of the Sixth Coalition, sometimes known in Germany as the Wars of Liberation, a coalition of Austria, Prussia, Russia, Spain, Great Britain, Portugal, Sweden, Sardinia, and a number of German States defeated France and drove Napoleon into exile on Elba. After the disastrous French invasion of Russia of 1812 in which they had been forced to support France, Prussia and Austria joined Russia, the United Kingdom, Sweden, and Portugal, and the rebels in Spain who were already at war with France.