The Battle of White Mountain (Czech: Bitva na Bílé hoře; German: Schlacht am Weißen Berg) was an important battle in the early stages of the Thirty Years' War.

It was fought on 8 November 1620. An army of 15,000 Bohemians and mercenaries under Christian of Anhalt was defeated by 27,000 men of the combined armies of Ferdinand II, Holy Roman Emperor, led by Charles Bonaventure de Longueval, Count of Bucquoy, and the German Catholic League under Johann Tserclaes, Count of Tilly, at Bílá Hora ("White Mountain") near Prague. The site is now part of the city of Prague.