The Morava (as it is called in Czech and Slovak languages) or the March (as it is known in German) is a river located in Central Europe. It is the most important river of Moravia, which derives its name from it. The river originates at the Králický Sněžník mountain in the north-western corner of Moravia, near the border between the Czech Republic and Poland and has a vaguely southern trajectory. The lower part of the course of the rivers forms the border between the Czech Republic and Slovakia and then between Austria and Slovakia.

The lowlands formed by the river are the Hornomoravský úval and then the Dolnomoravský úval in Moravia, the Marchfeld or Moravian Field (plain between the northeast of Vienna and the Morava river) in Lower Austria, and the Záhorská nížina or Záhorie Lowlands in Slovakia (plain between Moravia and Bratislava).

After approximately 358 kilometers, the Morava meets the Danube at Bratislava-Devin. The only major cities along the river are Olomouc in Moravia and the Slovak capital Bratislava.

Its most important tributary is the Thaya (German) or Dyje (Czech and Slovak), flowing in the border area of Lower Austria and Moravia. Another tributary is the river Myjava (which flows into Morava at Kúty ).