白俄罗斯语（беларуская мова）是白俄罗斯的两种官方语言之一。是斯拉夫语族东斯拉夫语支的语言，音韵、文法以及词汇接近乌克兰语。

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Belarusian (/bɛləˈruːsiən/; беларуская мова bielaruskaja mova [bʲelaˈruskaja ˈmova]) is an official language of Belarus, along with Russian, and is spoken abroad, chiefly in Russia, Ukraine, and Poland. Before Belarus gained independence from the Soviet Union in 1991, the language was known in English as Byelorussian or Belorussian, transliterating the Russian name, белорусский язык, or alternatively as White Ruthenian (/ruːˈθiːniən/) or White Russian. Following independence, it also became known as Belarusian.