The Leśna Prawa (Belarusian: Правая Лясная - Pravaja Liasnaja or Pravaya Lyasnaya) is a river in north-eastern Poland and western Belarus.

The Lyasnaya is a right tributary of the Bug River northwest of Brest.

The Leśna Prawa flows through the geographical region of Europe known as the Wysoczyzny Podlasko – Bialoruskie (English: Podlasie and Belarus Plateau) located within the Podlaskie Voivodeship of Poland and the Hrodna Voblast of Belarus.

Major part of the river flows through Puszcza Białowieska.

You can help Wikipedia by expanding it.This article related to a river in Belarus is a stub.