Morava (môr´ävä), Ger. March, river, c.240 mi (390 km) long, rising in the Sudetes, N Czech Republic, and flowing generally S past Olomouc into the Danube River, W of Bratislava. It is navigable in its lower course, which also forms part of Slovakia's border with the Czech Republic and Austria. The Morava Valley is very fertile; sugar beets, grains, and tobacco are raised there. The valley is an important north-south thoroughfare.

Morava or Velika Morava (vĕl´Ĭkä môr´ävä), river, 134 mi (216 km) long, formed at Stalać, E Serbia, by the junction of the Zapadna Morava and the Južna Morava. It flows N to the Danube River. The Morava's wide valley is fertile and densely populated. Along with the Vardar River it is a major transportation corridor of the Balkan Peninsula.