The Belarusian minority in Lithuania (Belarusian: Беларусы Літвы, romanized: Biełarusy Litvy; Russian: Белорусы в Литве, romanized: Belorusy v Litve; Lithuanian: Lietuvos baltarusiai) numbered 36,200 persons at the 2011 census, and at 1.2% of the total population of Lithuania, being the third most populous national minority.
[2] The Belarusian national minority in Lithuania has deep historical, cultural and political relations.
According to Polish professor Jan Otrębski's article published in 1931, the Polish dialect in the Vilnius Region and in the northeastern areas in general are very interesting variant of Polishness as this dialect developed in a foreign territory which was mostly inhabited by the Lithuanians who were Belarusized (mostly) or Polonized, and to prove this Otrębski provided examples of Lithuanianisms in the Tutejszy language.
[3][4] In 2015, Polish linguist Mirosław Jankowiak [pl] attested that many of the Vilnius Region's inhabitants who declare Polish nationality speak a Belarusian dialect which they call mowa prosta ('simple speech').
The most widespread Christian denominations among Belarusians in Lithuania are Roman Catholicism (49.6%) and Orthodoxy (32.3%).