Moravian Wallachia (Czech: Valašsko) is a mountainous region located in the easternmost part of Moravia, Czech Republic, near the Slovakian border, roughly centered around the cities Vsetín, Valašské Meziříčí and Rožnov pod Radhoštěm. The name Wallachia was formerly applied to all the highlands of Moravia and neighboring Silesia, although in the nineteenth century a smaller area came to be defined as ethno-cultural Moravian Wallachia. The traditional dialect (rarely heard these days) represents a mixture of elements from Czech and Slovak, and has a distinct lexicon of Romanian and Balkan origin relating to the pastoral economy of the highlands.
The name comes from the exonym of the Romanian shepherd migrants (see Vlachs), who advanced along the Carpathian range between the 14th and 17th centuries. On their way they gradually lost their original language with the exception of some Romanian words they use in their Czech and Slovak dialect, but they preserved much of their culture (especially folklore, songs and costumes) and economic base, namely sheep breeding.