Border rivers

major river in Bangladesh

tributary of the Amazon in South America

river in Somalia

river in Morocco

river in Bosnia and Herzegovina and Croatia

The Kupa () or Kolpa ( or ; from in Roman times; ) river, a right tributary of the Sava, forms a natural border between north-west Croatia and southeast Slovenia. It is long, with a length of serving as the border between Croatia and Slovenia and the rest located in Croatia.

river through which lake kivu empties into lake tanganyika.

river in south-central Africa

river in northern Sweden and Finland

river in southern France, right tributary of the Garonne

The Dunajec (; Goral dialects: Dónajec; ) is a river running through northeastern Slovakia and southern Poland. It is also regarded as the main river of the Goral Lands. It is a right tributary of the Vistula River. It begins in Nowy Targ at the junction of two short mountain rivers, Czarny Dunajec and Biały Dunajec (Black and White Dunajec). Dunajec forms the border between Poland and Slovakia for in the Pieniny Środkowe (Slovak: Centrálne Pieniny) range, east of the Czorsztyn reservoir.

river in Montenegro and Albania

river in Norway and Finland

river

The Semois (; Simwès in Walloon, often under elided form Smwès; Semoy, Sesbach in German, Setzbaach in Luxembourgish of Arlon; and known as the Semoy in France) is a river flowing from the Ardennes uplands of Belgium and France towards the Meuse, of which it is a right tributary.

river of Argentina and Bolivia

river of Brazil & Bolivia

The Debed () or Debeda () is a river in Armenia and Georgia. It also serves as a natural boundary between Armenia and Georgia at the village of Sadakhlo, Georgia. The Debed is long, and has a drainage basin.

River in Georgia and Azerbaijan

The Atrek (, , ), also known as the Attrack, Atrak, and Etrek, is a fast-moving river which begins in the mountains of north-eastern Iran () and flows westward, draining into the south-eastern corner of the Caspian Sea in Turkmenistan. Because of the high use of its waters for irrigation, the Atrek only flows into the Caspian when it is in its flood stage.

river in Russia and Azerbaijan, flowing into the Caspian Sea

river

The Paatsjoki River (, , , , , , Paz or Patsoyoki) is a river that flows through Finland, Norway, and Russia. Since 1826, the river has marked parts of the Norway–Russia border, except from 1920 to 1944 when it was along the Finland–Norway border.

The Sauer (German and Luxembourgish, , ) or Sûre (French, ) is a river in Belgium, Luxembourg and Germany. A left tributary of the Moselle, its total length is .

river in Montenegro and Bosnia and Herzegovina

river

River in Nicaragua, connecting Lake Nicaragua with the Caribbean Sea

river in Tajikistan and Afghanistan

river in México and Guatemala

__NOTOC__ The Bidasoa (; ; , ) is a river in the Basque Country of northern Spain and southern France that runs largely south to north. Named as such downstream of the village of Oronoz-Mugairi (municipality of Baztan) in the province of Navarre, the river actually results from the merger of several streams near the village Erratzu, with the stream Baztan that rises at the north-eastern side of the mount Autza (1,306 m) being considered the source of the Bidasoa. It joins the Cantabrian Sea (Bay of Biscay) between the towns of Hendaye and Hondarribia.

river in Burkina Faso, Ivory Coast, and Ghana

river in West-Central Africa

river

river in North America on the boundary of Michigan and Ontario

The Vilnia (also Vilnelė; , Vilnia ; ) is a river primarily running through Eastern Lithuania. Its source is near the villages of and , 6 km south of Šumskas, nearby to the A3–M7 Medininkai–Kamenny Log border crossing complexes of the Belarus–Lithuania border for approximately 12 kilometers.

major river in Nicaragua and Honduras forming much of the border and emptying into the Caribbean Sea at Cape Gracias a Dios

river

Muonionjoki (; ; ) is a river in northern Finland and Sweden. It is a tributary of the Tornio. Together the two rivers form the border between Finland and Sweden. The river is 230 kilometres long.

river in Estonia and Russia

The Korana is a river in central Croatia and west Bosnia and Herzegovina. The river has a total length of and watershed area of .

river in West Africa

river in Ethiopia

The Chiers (; ; ) is a river in Luxembourg, Belgium and France. It is a right tributary of the Meuse. The total length of the Chiers is approximately , of which in France.

river in Africa

river in Russia and Kazakhstan

river in South America, forming the border between Suriname and French Guiana

river in India and Nepal

river in Central Europe, tributary of the Oder

The Oyapock or Oiapoque ( ; ; ) is a long river in South America that forms most of the border between the French overseas department of French Guiana and the Brazilian state of Amapá.

tributary of the Orinoco in the Llanos of central Colombia

river in Bulgaria and Greece

river between Colombia and Venezuela

river in Burkina Faso and Ghana

The Sutla () or Sotla () is a river flowing through Slovenia and Croatia, mostly forming their border. It is a tributary to the Sava, itself a tributary to the Danube. It is long and has a watershed area of .

river in Belgium, Germany and Luxembourg

river in South America

river in Czechia

river in South America

river in Guatemala

river in Bulgaria