Moravian Wallachia is a mountainous ethnoregion located in the easternmost part of Moravia in the Czech Republic, near the Slovak border, roughly centered on the cities Vsetín, Valašské Meziříčí and Rožnov pod Radhoštěm. The name Wallachia used to be applied to all the highlands of Moravia and the neighboring Silesia, although in the 19th century a smaller area came to be defined as ethno-cultural Moravian Wallachia. The traditional dialect represents a mixture of elements from the Czech and Slovak languages, and has a distinct lexicon of Romanian origin relating to the pastoral economy of the highlands. The name originated from the term "Vlach", the exonym of Romanians.

Czech, historically also known as Bohemian, is a West Slavic language of the Czech–Slovak group, written in Latin script. Spoken by over 10 million people, it serves as the official language of the Czech Republic. Czech is closely related to Slovak, to the point of high mutual intelligibility, as well as to Polish to a lesser degree. Czech is a fusional language with a rich system of morphology and relatively flexible word order. Its vocabulary has been extensively influenced by Latin and German.