The Svratka (Czech pronunciation: [ˈsvratka]), formerly Švarcava (German: Schwarzach) is a river in the South Moravian Region of the Czech Republic with a length of 173.9 km. It develops out of the Bohemian-Moravian Highlands, converges with the Svitava at Brno, and flows into the Dyje (Thaya) a few kilometres from Mikulov. The river is known in the local Moravian dialect as the Švarcava (from the German name of the river Schwarzach).