Border between Belarus and Poland


November 27, 2021

The border between Belarus and Poland describes the dividing line between these two states. It has a length of 416 or 418 km.The demarcation starts from the triple border with Lithuania in the north and extends to the triple junction with Ukraine in the south. It is also one of the demarcations that divides a country that is part of the European Union from an external one. The border runs along the administrative borders of two voivodships, that of Podlachia and that of Lublin, in the Polish part, and the regions of Hrodna and Brest, in the Belarusian section. In the Polish part, 246.93 km are under the protection of the Lublin border guard, while the remaining 171.31 km are in the area belonging to the Bug River guard unit. The waterways present along the border, from north to south, are the Czarna Hańcza, the Wołkuszanka, the Świsłocz, the Narew and the Western Bug.


The border covers the west of Belarus and the east of Poland. It has a general trend from north to south. It starts at the triple border between Belarus, Lithuania and Poland and ends at the triple border between Belarus, Poland and Ukraine. More specifically, starting from the south, it runs from Sobibór and then follows the Western Bug, turning north-east. At that point, after crossing the Białowieża virgin forest, the Narew valley, the Svislach valley (tributary of the Nemunas), follows an almost straight line to the valley of the Wołkuszanka river. The course of the latter river marks the border for 5 km, after which the demarcation crosses the valley of the Czarna Hańcza and ends in the north of this river.

Regions involved

Within the two countries, the following regions and voivodships are affected: Belarus Brest region Hrodna region Poland Podlachia Voivodeship Lublin Voivodeship


Historically, Western Belarus was first part of the Grand Duchy of Lithuania from the 13th century and, later, of Poland after the founding of the Polish-Lithuanian Confederation. After 1795, the year in which the third partition of Poland took place, the latter ceased to exist until 1918. After the First World War, the Second Republic of Poland extended much further east than today and incorporated all that territory that makes up the current demarcation with Belarus. After the Soviet invasion of Poland in September 1939, Western Belarus was annexed to the Belarusian Soviet Socialist Republic. In that historical phase, five new voblasts were established: Baranavičy, Belostok, Brest, Pinsk and Vialejka. In keeping with the contents of the agreement on the border between Poland and the USSR of August 16, 1945, 17 districts of the Belastok voblast of the Belarusian SSR, including the city of Białystok and 3 districts of the Brest voblast, where a significant proportion of Polish citizens were transferred to Poland. It is estimated that 200,000 Belarusians remained on the red and white side of the border, while one million Poles remained on the opposite side.Following the 1944 agreement on population transfers between Poland and Soviet Belarus, a supplementary agreement was signed on 25 November 1945 in Warsaw by representatives of the government of the Belarusian SSR and the government of the National Unity of the Republic of Poland on the registration and evacuation of the Belarusian population. Pursuant to the same, various groups of citizens would have passed from the territory of Poland to the counterpart (36,700) and of the red and white population located in the Belarusian SSR to the territory of Poland (about 400,000, while the official data reported 274,200). Announcements on the registration and extension of the evacuation until June 1946 were posted in Białystok and within the Voivodeship. In 1946, during the filing of the state border between the USSR and Poland.

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