Pseudohistorical theory according to which Belarusians founded the Grand Duchy of Lithuania
Map of the Grand Duchy of Lithuania, the main foundation of the Litvin identity, at its greatest extent from the 13th to 15th centuries.
Litvinism (Belarusian: Ліцвінства, ліцвінізм / lićvinstva, lićvinizm, or літвінства, літвінізм / litvinstva, litvinizm) is a branch of nationalism, philosophy and political current in Belarus, which bases the history of its state on the heritage of the Grand Duchy of Lithuania and emphasizes the Baltic component of the Belarusian ethnic group.[1] According to this branch of Belarusian nationalism, the Grand Duchy of Lithuania (they refer to this state as Вялікае Княства Літоўскае, Vialikaje Kniastva Litoŭskaje, and modern Lithuania as Летува, Letuva or Жмудзь, Žmudź) was a Slavic or Belarusian state, the medieval Lithuanians were Belarusians, and modern Lithuania is a consequence of a falsification of history.[2] Opponents of Litvinism consider it a fringe pseudohistorical theory.[3][4][5][6][7]
Some Litvinists reject their Belarusian national identity[8] and affiliation with the Republic of Belarus,[8] in favor of a reconstructed Baltic Catholic[8]Litvin ("Lithuanian") identity, based on the history and legacy of the Grand Duchy of Lithuania. According to national censuses, only a few dozen residents of Belarus state their ethnic identity as Litvin rather than Belarusian.[9]