List of land borders with dates of establishment

This list of land borders with date of establishment identifies the historical year in which borders were established between countries.

Albania–Greece

 * 1913/1914 after Greek withdrawal due to international diplomatic pressure.

Albania–Montenegro

 * Shkodër - Berane
 * 1913 at the Treaty of London ending the Balkan Wars.
 * From Shkodër - Podgorica to Shkodër - Ulcinj
 * 1878 at the Treaty of Berlin, border between Montenegro and the Ottoman Empire.
 * 1913 at the Treaty of London

Albania–North Macedonia

 * 1913 at the Treaty of London, border between Albania and Serbia.
 * 1991 Independence for the Republic of Macedonia.

Albania–Serbia

 * 1913 at the Treaty of London.

Andorra–France

 * 985 France doesn't help Barcelona versus the Saracens, border between France and Barcelona.
 * 1278 Foix gains co-sovereignty over Andorra next to the bishop of Urgel.

Andorra–Spain

 * 1278 Foix gains co-sovereignty over Andorra next to the Bishop of Urgel.
 * 1479 Union between Castile and Aragon, the beginning of Spain.

Austria–Czech Republic

 * 12th/13th century, region settled by Germans, border between Austria and Bohemia (Czech Republic).

Austria–Liechtenstein

 * 1719 Creation of Liechtenstein.

Austria–Switzerland

 * Stuben - Scuol
 * 1363 Tyrol becomes Austrian, border between Austria and the bishopric of Chur.
 * 1497/1498 Grissons allies with Switzerland.
 * Schruns - Davos
 * 1420 Austria acquires Montafon, border between Austria and Toggenburg.
 * 1497/1498 Grissons allies with Switzerland.
 * Bregenz - St. Gallen
 * 15th century, Austria becomes the dominant power on the east bank of the Rhine.
 * 1491 Switzerland takes control of the west bank of the Rhine.

Austria–Slovakia

 * 976 Babenberger receive the Eastmark from the Germanic king, border between Austria and Hungary.
 * 1993 Slovakia gains independence from Czechoslovakia.

Austria–Hungary

 * 1919 at the Treaty of Saint-Germain, one of the treaties ending World War I.

Austria–Slovenia

 * 1919 at the Treaty of Saint-Germain, border between Austria and Yugoslavia.
 * 1991 Slovenian independence.

Austria–Germany

 * 1871 establishment of the German Empire, border between Austria-Hungary and Germany.

Austria–Italy

 * From Nauders - Mals to Lienz - Bruneck
 * 1919 at the Treaty of Saint-Germain.
 * Kötschach - Paluzza
 * 1st millennium, border between Italy and Carinthia.
 * 1335 Carinthia is inherited by the duke of Austria, border between Austria and Aquileia.
 * 1866 Venice conquered by Italy from Austria.
 * Villach - Tarvisio
 * 1919 at the Treaty of Saint-Germain.

Azerbaijan–Georgia

 * 1991 Azerbaijani and Georgian independence from the Soviet Union.

Azerbaijan–Russia

 * 1991 dissolution of the Soviet Union.

Belarus–Latvia

 * 1920 peace between Latvia/Poland and the Soviet Union, border between Latvia and the Soviet Union/Poland.
 * 1991 Belarusian and Latvian independence.

Belarus–Poland

 * 1945 after the annexation of Belarusian-populated eastern Poland by the Soviet Union during World War II, border between Poland and the Soviet Union.
 * 1991 Belarusian independence.

Belarus–Russia

 * From Polatsk - Velikiye Luki to Mahilyow - Klincy
 * 1991 dissolution of the Soviet Union.
 * Gomel - Klincy
 * 1667 at the Treaty of Andrusovo ending the Russo-Polish War, border between Russia and Poland–Lithuania.
 * 1991 dissolution of the Soviet Union.

Belarus–Ukraine

 * 1991 Belarusian and Ukrainian independence.

Belgium–Netherlands

 * From Knokke-Heist - Cadzand to Bree - Budel
 * 1648 at the peace of Westphalia between the Netherlands and Spain ending the Thirty Years' War.
 * 1830/1839 after the Belgian Revolution against the (united) Netherlands.
 * From Bree - Weert to Plombières - Vaals
 * 1839 at the Treaty of London.

Belgium–France

 * From De Panne - Bray-Dunes to Poperinge - Godewaersvelde
 * 1697 at the peace of Rijswijk, between France and Spain.
 * 1830/1839 After the Belgian Revolution.
 * From Loker - Bailleul to Comines
 * 1713 at the peace of Utrecht, between France and Austria
 * 1830/1839 After the Belgian Revolution.
 * From Menen - Tourcoing to Mons - Maubeuge
 * 1697 at the peace of Rijswijk, between France and Spain.
 * 1830/1839 After the Belgian Revolution.
 * From Binche - Maubeuge to Chimay - Fourmies
 * 1678/1679 at the peace of Nijmegen, between France and Spain.
 * 1830/1839 After the Belgian Revolution.
 * Couvin - Rocroi
 * 941? Border between France and Germany.
 * 1830/1839 After the Belgian Revolution.
 * From Couvin - Revin to Agimont - Givet
 * 1678/1679 at the peace of Nijmegen, between France and the bishopric of Liege.
 * 1830/1839 After the Belgian Revolution.
 * From Hastière - Givet to Aubange - Longwy
 * 1697 at the peace of Rijswijk, between France and Germany (Spain and the bishopric of Liege).
 * 1830/1839 After the Belgian Revolution.

Belgium–Luxembourg

 * From Aubange - Pétange to Gouvy - Huldange
 * 1839 at the Treaty of London.
 * Burg-Reuland - Leithum
 * 1839 at the Treaty of London, between Luxembourg and Prussia.
 * 1919 at the Treaty of Versailles.

Belgium–Germany

 * 1919 at the Treaty of Versailles.

Bosnia and Herzegovina–Croatia

 * 1995 Dayton Agreement ending the Bosnian War.

Bosnia and Herzegovina–Montenegro

 * Sarajevo - Pljevlja
 * 1913 at the Treaty of London, border between Montenegro and Austria-Hungary.
 * 1995 Dayton Agreement, border between Bosnia and Herzegovina and Yugoslavia.
 * 2006 Montenegrin independence.
 * Sarajevo - Nikšić
 * 1878 at the Treaty of Berlin, border between Montenegro and Austria-Hungary.
 * 1995 Dayton Agreement, border between Bosnia and Herzegovina and Yugoslavia.
 * 2006 Montenegrin independence.
 * Trebinje - Herceg Novi
 * 1995 Dayton Agreement, border between Bosnia and Herzegovina and Yugoslavia.
 * 2006 Montenegrin independence.

Bosnia and Herzegovina–Serbia

 * Zvornik - Loznica
 * 13th century, after Serbian conquest, border between Serbia and Bosnia.
 * 1995 Dayton Agreement, border between Bosnia and Herzegovina and Yugoslavia.
 * 2006 Serbian self-determination.
 * Sarajevo - Priboj
 * 1913 at the Treaty of London, border between Serbia and Austria-Hungary.
 * 1995 Dayton Agreement, border between Bosnia and Herzegovina and Yugoslavia.
 * 2006 Serbian self-determination.

Bulgaria–Greece

 * Petrich - Sidirokastro
 * 1913 at the Treaty of London.
 * From Smolyan - Xanthi to Svilengrad - Orestiada
 * 1919 at the Treaty of Neuilly.

Bulgaria–North Macedonia

 * Petric - Strumica
 * 1919 at the Treaty of Neuilly, border between Bulgaria and Yugoslavia.
 * 1991 Independence for the Republic of Macedonia.
 * Blagoevgrad - Kočani
 * 1913 at the Treaty of Bucharest, border between Bulgaria and Serbia.
 * 1991 Independence for the Republic of Macedonia.
 * Kyustendil - Skopje
 * 1878 Bulgarian independence, border between Bulgaria and the Ottoman Empire.
 * 1991 Independence for the Republic of Macedonia.

Bulgaria–Romania

 * Varna - Constanța
 * 1878 after the defeat of the Ottoman Empire.
 * From Silistra - Fetești to Vidin - Calafat
 * 1185 After Bulgarian uprise against the Byzantine Empire, border between Bulgaria and the Cumans.
 * 1859 formation of Romania, border between Romania and the Ottoman Empire.
 * 1878 Bulgarian independence.

Bulgaria–Serbia

 * Sofia - Pirot
 * 1919 at the Treaty of Neuilly, border between Bulgaria and Yugoslavia.
 * 2006 Serbian self-determination.
 * Vidin - Zaječar
 * 1878 Bulgarian and Serbian independence.

Bulgaria–Turkey

 * Burgas - Kırklareli
 * 1913 at the Treaty of London, border between Bulgaria and the Ottoman Empire (Turkey).
 * Elhovo - Edirne
 * 1885 after the East Rumelian revolution, border between Bulgaria and the Ottoman Empire (Turkey).
 * Svilengrad - Edirne
 * 1919 at the Treaty of Neuilly, border between Bulgaria and the Ottoman Empire (Turkey).

Croatia–Hungary

 * Osijek - Pécs
 * 1920 at the Treaty of Trianon, border between Hungary and Yugoslavia.
 * 1991 Croatian independence.
 * From Našice - Pécs to Varaždin - Nagykanizsa
 * 10th century.

Croatia–Montenegro

 * 1991 Croatian independence, border between Croatia and Yugoslavia.
 * 2006 Montenegrin independence.

Croatia–Serbia

 * Osijek - Apatin
 * 1995 Dayton agreement, border between Croatia and Yugoslavia.
 * 2006 Serbian self-determination.
 * Vukovar - Bačka Palanka
 * 925 Croatia conquers Slavonia, border between Croatia and Hungary.
 * 2006 Serbian self-determination.
 * Vukovar - Sremska Mitrovica
 * 1995 Dayton agreement, border between Croatia and Yugoslavia.
 * 2006 Serbian self-determination.

Croatia–Slovenia

 * Čakovec - Murska Sobota
 * 1991 Croatian and Slovenian independence.
 * From Varaždin - Ptuj to Rijeka - Postojna
 * 10th century, border between Croatia and Germany.
 * 1991 Croatian and Slovenian independence.
 * Pazin - Koper
 * 1991 Croatian and Slovenian independence.

Czech Republic–Germany

 * From Volary - Neureichenau to Mariánské Lázně - Mähring
 * 843 Treaty of Verdun dividing the Carolingian Empire, border between Germany and the Bohemians (Czechs).
 * Cheb - Marktredwitz
 * 1266 Egerland (Cheb) becomes Bohemian (dispute whether Bohemia was German at that time).
 * From Kraslice - Klingenthal to Hrádek nad Nisou - Zittau
 * 9th century, Bohemia established, border between Bohemia (Czechs) and the Sorbs.
 * 10th century, Germans conquer Sorb territories.

Czech Republic–Poland

 * From Liberec - Gorlice to Trutnov - Wałbrzych
 * 9th century, border between Bohemia (Czech Republic) and Great Moravia.
 * 10th century, border between Bohemia (Czech Republic) and Poland.
 * 1945 Stalin gives German Silesia to Poland, border between Poland and Czechoslovakia.
 * 1993 Czechoslovakia dissolved.
 * Náchod - Kłodzko to Ostrava - Racibórz
 * 1945 Stalin gives German Silesia to Poland, border between Poland and Czechoslovakia.
 * 1993 Czechoslovakia dissolved.
 * Český Těšín - Cieszyn
 * 1919 border between Czechoslovakia and Poland.
 * 1993 Czechoslovakia dissolved.

Czech Republic–Slovakia

 * From Břeclav - Senica to Frýdek-Místek - Žilina
 * 10th century, Bohemia acquires Moravia, border between Bohemia (Czech Republic) and Hungary.
 * 1993 Czechoslovakia splits in two.
 * Český Těšín - Čadca
 * 1298 Bohemia acquires Upper Silesia, border between Bohemia (Czech Republic) and Hungary.
 * 1993 Czechoslovakia splits in two.

Denmark–Germany

 * 1920 after referendum.

Denmark–Sweden

 * 1658 as a maritime border, Treaty of Roskilde
 * 2000 as an artificial land border, opening of the Copenhagen - Malmö bridge and tunnel

Estonia–Latvia

 * 1918 Latvian and Estonian independence from Russia.

Estonia–Russia

 * Narva - Ivangorod
 * 1478 Russian conquest of Novgorod, border between Russia and the German Order.
 * 1991 dissolution of the Soviet Union.
 * Võru - Pskov
 * 1510 Russian conquest of Pskov, border between Russia and the German Order.
 * 1991 dissolution of the Soviet Union.

Finland–Norway

 * 1751 Treaty of Strömstad, fairly undefined and disputed before that

Finland–Russia

 * Nellim - Nikel
 * 1946 at the Treaty of Paris, border between Finland and the Soviet Union.
 * Kuusamo - Topozero
 * 1917 Finnish independence.
 * Kotka - Vyborg
 * 1946 at the Treaty of Paris, border between Finland and the Soviet Union.

Finland–Sweden

 * 17 September 1809 - Treaty of Fredrikshamn ending the Finnish War, border between the Grand Duchy of Finland and Sweden.

France–Switzerland

 * Saint-Louis - Basel
 * 1501 Basel becomes a member of the Swiss Confederation, border between the Habsburg territories and Switzerland.
 * 1648 at the Treaty of Westphalia.
 * Wentzwiller - Oberwil
 * 1648 at the Treaty of Westphalia, border between France and the bishopric of Basel.
 * 1815 at the Congress of Vienna ending the Napoleonic Wars.
 * Leymen - Hofstetten-Flüh
 * 1515 Swiss Solothurn buys Rotberg from the Rotberg family, border between the Habsburg territories and Switzerland.
 * 1648 at the Treaty of Westphalia.
 * Lutter - Cholholx
 * 1648 at the Treaty of Westphalia, border between France and the bishopric of Basel.
 * 1815 at the congress of Vienna.
 * Lutter - Kleinlützel
 * 1527 Swiss Solothurn buys Kleinlützel from the monastery of Kleinlützel, border between the Habsburg territories and Switzerland.
 * 1648 at the Treaty of Westphalia.
 * From Blochmont - Ederswiler to Delle - Buix
 * 1648 at the Treaty of Westphalia, border between France and the bishopric of Basel.
 * 1815 at the congress of Vienna.
 * Montbéliard–Porrentruy
 * 1815 at the congress of Vienna.
 * From Vaufrey - Porrentruy to Pontarlier - Fleurier
 * 1678/1679 at the Treaty of Nijmegen ending the Franco-Dutch War, border between France and Germany (bishopric of Basel and Neuchâtel).
 * 1815 at the congress of Vienna.
 * From Les Fourgs - Sainte-Croix to Les Rousses - Saint-Cergue
 * 1536 border between Switzerland and Burgundy.
 * 1678/1679 at the Treaty of Nijmegen.
 * From Gex - Saint-Cergue to Gex - Geneva
 * 1536 after Swiss expansion, border between Switzerland and Savoy.
 * 1601 after French expansion.
 * 1932 borders finally settled.
 * Annemasse - Geneva
 * 1536 Geneva member of the Swiss Confederation, border between Switzerland and Savoy.
 * 1860 Savoy ceded to France by Sardinia-Piemonte.
 * Douvain - Geneva
 * 1569 Chablais returns to Savoy, border between Switzerland and Savoy.
 * 1860 Savoy ceded to France by Sardinia-Piemonte.
 * From Thonon-les-Bains - Monthey to Chamonix-Mont-Blanc - Martigny
 * 15th/16th century, after Swiss expansion, border between Switzerland and Savoy.
 * 1860 Savoy ceded to France by Sardinia-Piemonte.

France–Italy



 * Chamonix-Mont-Blanc - Courmayeur
 * 1860 Savoy ceded to France by Sardinia-Piemonte.
 * Bourg-Saint-Maurice - Susa
 * 1st millennium, Border between Italy and Burgundy.
 * 1860 Savoy ceded to France by Sardinia-Piemonte.
 * Briançon - Cesana Torinese
 * 1st millennium, Border between Italy and Burgundy.
 * 1349 France buys Dauphiné from the heir, border between France and Germany (Savoy and Saluzzo).
 * 1860 after Italian unification.
 * Barcelonette - Demonte
 * 1st millennium, Border between Italy and Burgundy.
 * 1481, Provence inherited by the king of France, border between France and Germany (Savoy and Saluzzo).
 * 1860 after Italian unification.
 * From Isola - Vinadio to Sospel - Camporosso
 * 1860 Italian unification and Nice ceded to France.
 * Menton - Ventimiglia
 * 1860 Italian unification, border between Italy and Mentone.
 * 1861 Mentone annexed by France.

France–Monaco

 * 1848/1861 Revolt in Monaco's hinterland, France annexes rebel territory.

France–Spain

 * From Banyuls-sur-Mer - Llanca to Bourg-Madame - Puigcerdà
 * 1659 at the Treaty of the Pyrenees ending the Franco-Spanish War.
 * Saint-Girons - Rialp
 * 985 France doesn't help its province Barcelona against the Saracens, border between France and Barcelona.
 * 1479 Aragon and Castile are unified and become known as Spain.
 * From Bagnères-de-Luchon - Vielha to Cauterets - Sallent de Gállego
 * 843 at the Treaty of Verdun, border between France and Aragon.
 * 1479 Aragon and Castile are unified and become known as Spain.
 * Urdos - Canfranc
 * 843 at the Treaty of Verdun, border between France and Aragon. (French possession of Béarn was disputed until 1620).
 * 1479 Aragon and Castile are unified and become known as Spain.
 * Arette - Isaba
 * 843 at the Treaty of Verdun, Border between France and Pamplona.
 * 1512 Castile (Spain) annexes southern Navarra.
 * Saint-Étienne-de-Baïgorry - Baztan
 * 1512 Castile (Spain) annexes southern Navarra, border between Castile (Spain) and Lower Navarre.
 * 1620 France annexes Lower Navarre.
 * Cambo-les-Bains - Baztan
 * 843 at the Treaty of Verdun, Border between France and Pamplona.
 * 1512 Castile (Spain) annexes southern Navarra.
 * Hendaye - Irun
 * 843 at the Treaty of Verdun, Border between France and Pamplona.
 * 1479 Aragon and Castile are unified and become known as Spain.

France–Germany

 * 17th century
 * 1871, German unification, Prussia annexes Alsace-Lorraine in the Franco-Prussian War.
 * 1919, the Treaty of Versailles returns Alsace-Lorraine to France.

France–Luxembourg

 * Esch-sur-Alzette - Villerupt
 * Middle Ages, between Luxembourg and Bar.
 * 1659 at the Treaty of the Pyrenees, between France and Spain.
 * 1839 at the Treaty of London.
 * Dudelange - Thionville
 * 1659 at the Treaty of the Pyrenees, between France and Spain.
 * 1839 at the Treaty of London.
 * Schengen - Sierck-les-Bains
 * Middle Ages, between Luxembourg and Lorraine.
 * 1661 at the Treaty of Vincennes, between France and Spain.
 * 1839 at the Treaty of London.

France–UK

 * Calais - Dover

Georgia–Russia

 * From Tbilisi - Makhachkala to Kutaisi - Vladikavkaz
 * 1991 dissolution of the Soviet Union.
 * Kutaisi - Nalchik
 * 1001, Georgia acquires Abkhazia, border between Georgia and Alania.
 * 1557 Russia conquers Kabardino-Balkaria, border between Russia and the Ottoman Empire.
 * 1991 dissolution of the Soviet Union.
 * Sukhumi - Cherkessk
 * 1001, Georgia acquires Abkhazia, border between Georgia and Alania.
 * 1991 dissolution of the Soviet Union.
 * Sukhumi - Sochi
 * 15th century, border between Georgia and the Ubykhs.
 * 1991 dissolution of the Soviet Union.

Germany–Luxembourg

 * 1815 at the Treaty of Vienna, between the (united) Netherlands and Prussia (German Confederation).
 * 1839 at the Treaty of London, between Luxembourg and Prussia (German Confederation).

Germany–Netherlands

 * From Aachen - Vaals to Kleve - Gennep
 * 1815 at the Congress of Vienna, between the (united) Netherlands and Prussia (German Confederation).
 * From Kranenburg - Groesbeek to Bunde - Nieuweschans
 * 1648 at the peace of Westphalia, between the Netherlands and the Holy Roman Empire of the German nation.

Germany–Poland

 * 1945 Stalin gives Eastern Germany to Poland, border between Soviet occupied Germany and Poland set at the Oder–Neisse line.

Germany–Switzerland

 * Lörrach - Basel
 * 1648 at the Treaty of Westphalia.
 * From Rheinfelden to Laufenburg
 * 1806 at the German Mediatisation (Reichsdeputationshauptschluss), between the Confederation of the Rhine (Germany) and the Republic of Helvetia (Switzerland).
 * From Waldshut-Tiengen - Döttingen to the Bodensee
 * 1648 at the Treaty of Westphalia.

Greece–North Macedonia

 * 1913 at the Treaty of London, border between Greece and Serbia.

Greece–Turkey

 * 1913 at the Treaty of London, border between Bulgaria and the Ottoman Empire (Turkey).
 * 1923 at the Treaty of Lausanne ending the Greco-Turkish War.

Hungary–Romania

 * 1920 at the Treaty of Trianon.

Hungary–Slovakia

 * 1920 at the Treaty of Trianon, border between Hungary and Czechoslovakia.

Hungary–Serbia

 * 1920 at the Treaty of Trianon, border between Hungary and Yugoslavia.

Hungary–Slovenia

 * 1920 at the Treaty of Trianon, border between Hungary and Yugoslavia.
 * 1991 Slovenian independence.

Hungary–Ukraine

 * 1920 at the Treaty of Trianon, border between Hungary and Czechoslovakia.

Ireland–UK

 * 1921 Independence of Ireland.

Italy–San Marino

 * 1st millennium/1631, border between San Marino and Papal States.
 * 1860 Italian nationalists conquer the eastern Papal States.

Italy–Slovenia

 * Tarvisio - Kranjska Gora
 * 1919 at the Treaty of Saint-Germain, border between Italy and Yugoslavia.
 * 1991 Slovenian declaration of independence.
 * From Cave del Predil - Strmec na Predelu to Gorizia - Nova Gorica
 * 1947 at the Treaty of Paris, border between Italy and Yugoslavia.
 * Trieste - Postojna
 * 1954 Free state Trieste dissolved, border between Italy and Yugoslavia.

Italy–Switzerland

 * Aosta - Martigny
 * 1477 Swiss ally Valais conquers Martigny, border between Switzerland and Savoy.
 * 1860 Italian unification.
 * Valtournenche - Zermatt
 * 1416 Valais allies with Switzerland, border between Switzerland and Savoy.
 * 1860 Italian unification.
 * Domodossola - Brig
 * 1st millennium, border between Italy and Burgundy.
 * 1416 Valais allies with Switzerland, border between Switzerland and Milan.
 * 1860 Italian unification.
 * From Domodossola - Locarno to Porlezza - Lugano
 * 1512 after Swiss conquest of Milan, border between Switzerland and Milan.
 * 1860 Italian unification.
 * From Madesimo - Splügen to Livigno - Zernez
 * 1st millennium, border between Italy and the Frankish Empire.
 * 1497/1498 Grissons allies with Switzerland, border between Switzerland and Milan.
 * 1860 Italian unification.
 * Taufers im Münstertal - Müstair
 * 1497/1498 Grissons allies with Switzerland, border between Switzerland and the Habsburg territories.
 * 1919 at the Treaty of Saint-Germain.

Italy–Vatican City

 * 1929 Lateran Treaty

Latvia–Lithuania

 * 1236 Lithuanian state established, border between Lithuania and other Balts.
 * 1918 Lithuanian and Latvian independence.

Lithuania–Belarus

 * 1991 Belarusian and Lithuanian independence.

Lithuania–Poland

 * 1919 at the Treaty of Versailles.

Lithuania–Russia

 * Kybartai - Gusev
 * 13th century, border between Lithuania and the Baltic Prussians.
 * 1991 dissolution of the Soviet Union.
 * Tauragė - Sovetsk
 * 1923 after Lithuanian annexation, border between Lithuania and Germany.
 * 1991 dissolution of the Soviet Union.

Latvia–Russia

 * Rēzekne - Pskov
 * 1510, Russian conquest of Pskov, border between Russia and the German Order.
 * 1991 dissolution of the Soviet Union.
 * Rēzekne - Sebez
 * 1920 peace between Latvia and the Soviet Union.
 * 1991 dissolution of the Soviet Union.

Liechtenstein–Switzerland

 * Vaduz - Igis
 * 1497/1498 Grissons allies with Switzerland, border between Switzerland and Brandis.
 * 1719 Creation of Liechtenstein.
 * Vaduz - Mels
 * 1436 Inhabitants of Sargans become citizens of Swiss Zürich, border between Switzerland and Brandis.
 * 1719 Creation of Liechtenstein.
 * Vaduz - Buchs
 * 1485 Swiss Luzern buys Werdenberg, border between Switzerland and Brandis.
 * 1719 Creation of Liechtenstein.
 * Bendern - Salez
 * 1458 Lords of Sax-Forstegg ally with Switzerland, border between Switzerland and Brandis.
 * 1719 Creation of Liechtenstein.

Moldova–Romania

 * Bălți - Iași
 * 1859 formation of Romania, border between Romania and Russia.
 * 1991 Moldovan independence.
 * Cahul - Brăila
 * 1878 after Russian annexation of Southern Bessarabia, border between Romania and Russia.
 * 1991 Moldovan independence.

Moldova–Ukraine

 * 1991 Moldovan and Ukrainian independence.

Montenegro–Serbia

 * 1913 at the Treaty of London.

North Macedonia–Serbia

 * 1991 Independence for the Republic of Macedonia, border between the Republic of Macedonia and Yugoslavia.

Norway–Russia

 * 1826 borders fixed between Russia and Norway (Sweden acted on behalf of Norway in international affairs during the union).

Norway–Sweden

 * Against Bohuslän (from The Iddefjord to near a line between Halden - Ed)
 * 1658 at the Treaty of Roskilde ending the Second Northern War, border between Sweden and Denmark-Norway.
 * From Halden - Ed to around Trysil - Särna
 * probably 10th and 11th centuries
 * From Trysil - Särna to around Gäddede
 * 1645 at the Treaty of Brömsebro ending the Torstenson War, new border between Sweden and Denmark-Norway. Disputed near Gäddede.
 * North of Gäddede
 * 16th century, the drainage divide line between the Atlantic and the Baltic was used as approximate border between Sweden-Finland and Denmark-Norway.
 * Precisely defined by Stromstad Treaty of 1751, after which border cairns were erected.
 * 1809, the part now belonging to Finland was ceded from Sweden to Russia and therefore was no longer part of the Norway–Sweden border.

Poland–Slovakia

 * 10th/11th century, border between Poland and Hungary.

Poland–Russia

 * 1945 Stalin divides German East Prussia, border between Poland and the Soviet Union.

Poland–Ukraine

 * From Chełm - Kovel to Przemyśl - Sambir
 * 1945 after the annexation of East Poland by Stalin, border between Poland and the Soviet Union.
 * 1991 Ukrainian independence.
 * Kremenaros-Krzemieniec - Uzhok Pass
 * 11th century, border between Poland and Hungary.
 * 1991 Ukrainian independence.

Portugal–Spain

 * From Faro - Huelva to Portalegre - Cáceres
 * 12th/13th century, conquered by Portugal, border between Portugal and León/Castile.
 * 1479 Union between Castile and Aragon, the beginning of Spain.
 * From Guarda - Salamanca to Braga - Vigo
 * 1139 Portugal becomes independent from León-Castile, border between Portugal and León-Castile.
 * 1479 Union between Castile and Aragon, the beginning of Spain.
 * 1864 Treaty of Lisbon sets border.

Romania–Ukraine

 * Sighetu Marmației - Khust
 * 1919 at the Treaty of Versailles, border between Romania and Czechoslovakia/Polish or Ukrainian East Galicia.
 * 1991 Ukrainian independence.
 * Suceava - Chernivtsi
 * 1940/1944 border between Romania and the Soviet Union.
 * 1991 Ukrainian independence.
 * Brăila - Izmail
 * 1878 Romanian annexation of Dobruja, border between Romania and Russia.
 * 1991 Ukrainian independence.

Romania–Serbia

 * Drobeta-Turnu Severin - Negotin
 * 1284 after Serbian conquest, border between Serbia and Hungary.
 * 1859 formation of Romania, border between Romania and Ottoman Empire.
 * 1878 Serbian independence.
 * Anina - Bor
 * 1284 after Serbian conquest, border between Serbia and Hungary.
 * 1920 at the Treaty of Trianon, border between Romania and Yugoslavia.
 * 2006 Serbian self-determination.
 * Timișoara - Belgrade
 * 1920 at the Treaty of Trianon, border between Romania and Yugoslavia.
 * 2006 Serbian self-determination.

Russia–Ukraine

 * 1991 dissolution of the Soviet Union.

Slovakia–Ukraine

 * 1991 Ukrainian independence, border between Ukraine and Czechoslovakia.
 * 1993 Slovakian independence.

Spain–UK

 * La Línea de la Concepción - Gibraltar
 * 1713 at the Treaty of Utrecht ending the War of the Spanish Succession, border between Spain and Great Britain (United Kingdom).

Afghanistan–China

 * 18th century

Afghanistan–Iran

 * 1857 Great Britain establishes the border between Persia (Iran) and Afghanistan after the Iranian defeat during the Anglo-Persian War

Afghanistan–Pakistan

 * 1919 Afghanistan becomes independent from the British Empire, border between Afghanistan and the British Empire
 * 1947 Pakistan becomes independent from the United Kingdom

Afghanistan–Tajikistan

 * 1885 After Russian conquest of Panjdeh, border between Afghanistan and Russia
 * 1991 Tajikistani independence

Afghanistan–Turkmenistan

 * 1885 After Russian conquest, border between Afghanistan and Russia
 * 1991 Turkmenistani independence

Afghanistan–Uzbekistan

 * 1885 After Russian conquest, border between Afghanistan and Russia
 * 1991 Uzbekistani independence

Armenia–Azerbaijan

 * 1991 Armenian and Azerbaijani independence.

Armenia–Georgia

 * 1991 Armenian and Georgian independence.

Armenia–Turkey

 * 1921 at the Treaty of Kars, border between Turkey and the Soviet Union.
 * 1991 Armenian independence.

Azerbaijan–Iran

 * Lankaran - Ardabil
 * 1828 at the Treaty of Turkmenchay, border between Russia and Persia (Iran).
 * 1991 Azerbaijani independence.
 * Stepanakert - Tabriz
 * 1813 at the Treaty of Gulistan ending the Russo-Persian War, border between Russia and Persia (Iran).
 * 1991 Azerbaijani independence.
 * Nakhchivan - Tabriz
 * 1828 at the Treaty of Turkmenchay, border between Russia and Persia (Iran).
 * 1991 Azerbaijani independence.

Azerbaijan–Turkey

 * 1921 at the Treaty of Kars, border between Turkey and the Soviet Union.
 * 1991 Azerbaijani independence.

Bangladesh–Burma

 * Chittagong–Mandalay
 * 1558 Burma conquers Manipur, border between Burma and Arakan
 * 1971 Bangladesh becomes independent from Pakistan
 * Chittagong–Sittwe
 * 1784 Burma conquers Arakan, border between Burma and Great Britain
 * 1971 Bangladesh becomes independent from Pakistan

Bangladesh–India

 * 1947 Indian independence from the United Kingdom, border between India and Pakistan
 * 1971 Bangladesh becomes independent from Pakistan after the Bangladesh Liberation War.

Bhutan–India

 * 1616 Bhutan becomes independent from Tibet, border between Bhutan and the Kamata Kingdom
 * 1947 Indian independence

Bhutan–China

 * 1616 Bhutan becomes independent from Tibet, border between Bhutan and Tibet
 * 1724 China conquers Tibet from the Dzungars

Brunei–Malaysia

 * 1963 Establishment of Malaysia, border between the British protectorate of Brunei and Malaysia
 * 1984 End of the British protectorate

Burma–India

 * 1826 Treaty of Yandabo, Border between Burma and the United Kingdom
 * 1947 Indian independence, border between India and the United Kingdom
 * 1948 Burmese independence

Burma–China

 * Myitkyina–Dsayul
 * 11th century, Pagan establishes Burma, border between Burma and the Tibetans
 * 1724 China conquers Tibet from the Dzungars
 * Myitkyina–Baoshan
 * 109 BC, China conquers the Dian kingdom, border between China and the Mon people
 * 11th century, Pagan establishes Burma, border between Burma and Dali
 * 1555 Burma conquers Upper Burma
 * 1769 Last Chinese invasion
 * From Lashio–Baoshan to Kengtung–Simao
 * 109 BC, China conquers the Dian Kingdom, border between China and the Mon people
 * 1557 Burma conquers the Shan States
 * 1769 Last Chinese invasion

Burma–Thailand

 * Kengtung–Chang Mai
 * 1557 Pagan (Burma) conquers the Shan states, border between Burma and Chiang Mai
 * 1774 Thailand conquers Chiang Mai from Burma
 * Rangoon–Chang Mai
 * 1530s or 1540s, Burma is established out of several small states, border between Burma and Chiang Mai
 * 1774 Thailand conquers Chiang Mai from Burma
 * Tavoy–Bangkok
 * 1057 Thaton is conquered by Pagan (Burma), border between Pagan (Burma) and the Khmer Empire
 * 16th-18th century, Burma conquers the Mon kingdoms

Cambodia–Laos

 * 1353 Lan Xang (Laos) becomes independent from the Khmer Empire (Cambodia)

Cambodia–Thailand

 * Phnom Penh–Udon Thani
 * 1353 Lan Xang (Laos) becomes independent from the Khmer Empire (Cambodia), Border between the Khmer Empire and Lan Xang
 * 15th or 16th century, Ayutthaya Kingdom (Thailand) conquers western Lan Xang
 * Phnom Penh–Bangkok
 * 14th/15th century, Ayutthaya Kingdom (Thailand) conquers the western part of the Khmer Empire (Cambodia)

Cambodia–Vietnam

 * 1953 Cambodia becomes independent from France, border between Cambodia and France
 * 1975 North Vietnam and South Vietnam are re-unified

China–Laos

 * 109 BC, China conquers the Dian Kingdom, border between China and the Mon people
 * 1353 Establishment of the kingdom of Lan Xang, border between Lan Xang (Laos) and the Mongolian Empire
 * 1381 Ming China conquers Yunnan from Yuan (Mongolian) loyalists

China–Pakistan

 * 1963 Trans-Karakoram Treaty

China–India

 * Shahidulla Mazar–Leh
 * 1984 After Indian offensive against Pakistan on Siachen Glacier at 5,000 meters above sea level, disputed
 * Gartog–Leh
 * 1962 Disputed, cease fire
 * Gartog–Shimla
 * 1724 China conquers Tibet from the Dzungars, border between China and the Mughal Empire
 * 1947 Indian independence, border between India and Tibet
 * 1951 Tibet cedes de facto sovereignty to the People's Republic of China
 * Khampa Dsong–Gangtok
 * 1724 China conquers Tibet from the Dzungars, border between China and Sikkim
 * 1947 Indian independence, border between India and Tibet
 * 1951 Conquest of Tibet by China
 * Lhasa–Tinsukia
 * 1947 Indian independence, border between India and Tibet
 * 1951 Conquest of Tibet by China

China–Kazakhstan

 * 1881 at the Treaty of Saint Petersburg, border between China and Russia.
 * 1991 Kazakhstani independence.

China–Kyrgyzstan

 * 1881 At the Treaty of Saint Petersburg, border between China and Russia
 * 1991 Kyrgyzstani independence

China–Mongolia

 * 1911 Mongolian independence.

China–Nepal

 * 1724 China conquers Tibet from the Dzungars, border between China and the Nepalese kingdoms
 * 1768 The king of Gorkha unites all Nepalese kingdoms into one

China–North Korea

 * 1895/1910 after Japanese conquest, border between China and Japan.
 * 1945/1948 North Korean independence.

China–Tajikistan

 * 1757 China conquers Sinkiang, border between Bukhara and China
 * 1991 Tajikistani independence

China–Russia

 * From Mudanjiang - Vladivostok to Mohe - Never
 * 1858 at the Treaty of Aigun.
 * Manzouli - Krasnokamensk
 * 1689 at the Treaty of Nerchinsk.
 * Altay - Gorno-Altaysk
 * 1755, China acquires the Ili-basin, border between China and the Altays.
 * 1758, Russia acquires part of the Altay territory.

China–Vietnam

 * Malipo–Hanoi
 * 1st millennium BC?, border between Văn Lang (Vietnam) and the Dian Kingdom
 * 938, Vietnam becomes independent from China
 * Nanning–Hanoi
 * 1st millennium BC?, border of Văn Lang (Vietnam)
 * 214 BC, China conquers Guangxi

East Timor–Indonesia

 * 1949 Indonesia becomes independent from the Netherlands, border between Indonesia and Portugal
 * 2002 East Timor becomes independent from Indonesia

Egypt–Israel

 * 1841 The United Kingdom forces Egypt to retreat from the Levant, border between Egypt and the Ottoman Empire
 * 1948 Israeli independence

Egypt–Palestine (Gaza)

 * 1841 The United Kingdom forces Egypt to retreat from the Levant, border between Egypt and the Ottoman Empire
 * 1988 Palestine declaration, Egyptian withdrawal from Gaza
 * 1977 Egyptian recognition of Israel

Georgia–Turkey

 * 1921 at the Treaty of Kars, border between Turkey and the Soviet Union.
 * 1991 Georgian independence.

India–Nepal

 * Siliguri–Kathmandu
 * 1923 The British Empire recognizes the independence of Nepal, border between Nepal and the British Empire
 * 1947 Indian independence from the United Kingdom
 * Patna–Kathmandu
 * 1768 The king of Gorkha unites all Nepalese kingdoms into one, border between Nepal and Great Britain
 * 1947 Indian independence from the United Kingdom
 * Gorakhpur–Kathmandu
 * 1768 The king of Gorkha unites all Nepalese kingdoms into one, border between Nepal and the Mughal Empire
 * 1947 Indian independence from the United Kingdom
 * Delhi–Kathmandu
 * 1923 The British Empire recognizes the independence of Nepal, border between Nepal and the British Empire
 * 1947 Indian independence from the United Kingdom

India–Pakistan

 * Siachen Glacier
 * 1984 After Indian offensive on a glacier at 5,000 meters above sea level
 * From Srinagar–Skardu to Ahmedabad–Karachi
 * 1947 Partition of India into two Dominions India and Pakistan following the Indian independence act and cease fire line of the war between India and Pakistan on Kashmir.

Indonesia–Malaysia

 * 1949 Indonesia becomes independent from the Netherlands, border between Indonesia and the United Kingdom
 * 1963 Establishment of Malaysia

Iran–Iraq

 * 16th century, border between Persia (Iran) and the Ottoman Empire
 * 1932 Iraqi independence

Iran–Pakistan

 * 1872 Border agreement between Persia (Iran) and the British Empire
 * 1947 Pakistan becomes independent from the United Kingdom

Iran–Turkey

 * 16th century, border between Persia (Iran) and the Ottoman Empire (Turkey).

Iran–Turkmenistan

 * 1885 After Russian conquest of Merv, border between Iran and Russia
 * 1991 Turkmenistani independence

Iraq–Jordan

 * 1932 Iraqi independence, border between Iraq and the British League of Nations mandate of Palestine
 * 1946 Jordanian independence

Iraq–Kuwait

 * 1932 Iraqi independence, border between Iraq and the British protectorate of Kuwait
 * 1961 Kuwaiti independence

Iraq–Saudi Arabia

 * Baghdad–Al-Jawf
 * 1926 Unification of Nejd and Hijaz, border between Saudi Arabia and the British League of Nations mandate of Iraq
 * 1932 Iraqi independence
 * Nasiriyah–Ar Riyad
 * 1975/1991 The Saudi-Iraqi neutral zone is split in two parts

Iraq–Syria

 * 1932 Iraqi independence, border between Iraq and the French League of Nations mandate of Syria
 * 1944 Syrian independence

Iraq–Turkey

 * 1923 at the Treaty of Lausanne, border between Turkey and the British League of Nations mandate of Iraq.
 * 1932 Iraqi independence.

Israel–Syria

 * 1944 Syrian independence, border between Syria and the British League of Nations mandate of Palestine
 * 1948 Israeli independence

Israel-Palestine (West Bank, East Jerusalem)

 * 1988 Palestine Declaration of Independence
 * 1993 Oslo Accords between Israel and Palestine (PLO)
 * 1948 Israel independence

Israel–Jordan

 * Hefa–Irbid
 * 1047 BC, border between Israel and Aram Damascus
 * 1946 Jordanian independence, border between Jordan and the British United Nations mandate of Palestine
 * 1948 Israeli independence
 * From Beersheba–Ma'an to Eilat–Al-'Aqabah
 * 1946 Jordanian independence, border between Jordan and the British United Nations mandate of Palestine
 * 1948 Israeli independence

Jordan–Syria

 * 1944 Syrian independence, border between Syria and the British League of Nations mandate of Palestine
 * 1946 Jordanian independence

Jordan–Saudi Arabia

 * 1926 Unification of Nejd and Hijaz, border between Saudi Arabia and the British League of Nations mandate of Palestine
 * 1946 Independence of Jordan

Jordan-Palestine (West bank)

 * 1988 Jordanian withdrawal from West Bank, Palestinian independence declaration
 * 1946 Jordanian independence
 * 1994 Jordanian recognition of Israel

Kazakhstan–Kyrgyzstan

 * 1991 Kazakhstani and Kyrgyzstani independence.

Kazakhstan–Russia

 * 1991 dissolution of the Soviet Union.

Kazakhstan–Turkmenistan

 * 1991 Kazakhstani and Turkmenistani independence.

Kazakhstan–Uzbekistan

 * 1991 Kazakhstani and Uzbekistani independence.

Kuwait–Saudi Arabia

 * Al-Kuwayt–Al-Hafar al-Batin
 * 1926 Unification of Nejd and Hijaz, border between Saudi Arabia and the British protectorate of Kuwait
 * 1961 Kuwaiti independence
 * Al-Kuwayt–Dammam
 * 1970 The Saudi-Kuwaiti neutral zone is split in two parts

Kyrgyzstan–Tajikistan

 * 1991 Kyrgyzstani and Tajikistani independence

Kyrgyzstan–Uzbekistan

 * 1991 Kyrgyzstani and Uzbekistani independence

Laos–Burma

 * 1353 Establishment of Lan Xang (Laos), border between Lan Xang and the Shan states
 * 1557 Burma conquers the Shan States

Laos–Thailand

 * Luang Prabang–Chiang Mai
 * 1353 Establishment of Lan Xang (Laos), border between Lan Xang (Laos) and Lanna
 * 1774 Lanna is conquered by Thailand, border between Thailand and Luang Prabang
 * 1954 Laos becomes independent from France
 * Vientiane–Nakhon Ratchasima
 * 1893 France conquers Vientiane from Thailand, border between Thailand and France
 * 1954 Laos becomes independent from France

Laos–Vietnam

 * Phong Saly–Lai Châu
 * 1st millennium BC, border between Văn Lang (Vietnam) and the Mon people
 * 1353 Establishment of Lan Xang (Laos)
 * Luang Prabang–Hanoi
 * 938 Vietnamese independence from China, border between Vietnam and the Tai
 * 1353 Establishment of Lan Xang (Laos)
 * Vientiane–Xa-doai
 * 938 Vietnamese independence from China, border between Vietnam and the Khmer Empire
 * 1353 Establishment of Lan Xang (Laos)
 * Chamrap–Ða Nang
 * 1353 Establishment of Lan Xang (Laos), border between Lan Xang and Champa
 * 1475 Vietnam conquers northern Champa

Lebanon–Syria

 * 1941/1943 Lebanese independence, border between Lebanon and the French League of Nations mandate of Syria
 * 1944 Syrian independence

Lebanon–Israel

 * 1941/1943 Lebanese independence, border between Lebanon and the British League of Nations mandate of Palestine
 * 1948 Israeli independence

Malaysia–Singapore

 * 1965 Singapore becomes independent from Malaysia (land connection via causeways)

Malaysia–Thailand

 * 1909 Treaty of Bangkok, border between Thailand and the British Empire
 * 1963 Establishment of Malaysia

Mongolia–Russia

 * From Choibalsan - Krasnokamensk to Mörön - Tulun
 * 1727 at the Treaty of Kyakhta, border between Russia and China.
 * 1911 Mongolian independence.
 * From Mörön - Kyzyl to Ulaangom - Kyzyl
 * 1912/1944 Russia annexes Tuva.
 * Ölgij - Gorno-Altaysk
 * 1758, Russia acquires part of the Altay territory, border between China and Russia.
 * 1911 Mongolian independence.

North Korea–South Korea

 * 1953 after ceasefire.

North Korea–Russia

 * 1858 at the Treaty of Aigun, border between Russia and China.
 * 1948 Creation of North Korea, border between North Korea and the Soviet Union.
 * 1991 Russian self-determination.

Oman–Saudi Arabia

 * 1990 Border agreement

Oman–United Arab Emirates

 * Khasab–Dubai
 * 1971 The United Arab Emirates and Oman become independent from the United Kingdom
 * Shinas–Dubai
 * 1971 The United Arab Emirates and Oman become independent from the United Kingdom
 * Al Buraymi–Abu Zabi
 * 1971 The United Arab Emirates and Oman become independent from the United Kingdom
 * 1999 Border dispute on Al-Buraymi resolved

Oman–Yemen

 * 1971 Omani independence, border between Oman and South Yemen
 * 1990 North Yemen and South Yemen are unified
 * 1992 Border dispute between Oman and Yemen settled about Habarut

Saudi Arabia–Qatar

 * 2009 Signed at the UN headquarters

Saudi Arabia–United Arab Emirates

 * 1974 Treaty of Jeddah, disputed

Saudi Arabia–Yemen

 * Ar Riyad–Mukalla
 * 1926 Unification of Nejd and Hijaz, border between Saudi Arabia and the British protectorate of Aden
 * 1990 Unification of South Yemen and North Yemen
 * Jizan–San'a
 * 1934 Treaty of Taif, border between Saudi Arabia and (North) Yemen

Syria–Turkey

 * From Nusaybin - Cizre to Aleppo - Gaziantep
 * 1923 at the Treaty of Lausanne, border between Turkey and the French League of Nations mandate of Syria.
 * 1944 Syrian independence.
 * Aleppo - Antakya
 * 1939 after referendum, border between Turkey and the French League of Nations mandate of Syria.
 * 1944 Syrian independence.

Tajikistan–Uzbekistan

 * 1991 Tajikistani and Uzbekistani independence

Turkmenistan–Uzbekistan

 * 1991 Turkmenistani and Uzbekistani independence

Indonesia–Papua New Guinea

 * 1969 The Netherlands cedes Papua to Indonesia, border between Indonesia and Australia
 * 1975 Papua New Guinea becomes independent from Australia

Algeria–Libya

 * 1951 Libya becomes independent, border between Libya and France
 * 1962 Algeria becomes independent

Algeria–Mali

 * 1960 Mali becomes independent, border between Mali and France
 * 1962 Algeria becomes independent

Algeria–Mauritania

 * 1960 Mauritania becomes independent, border between Mauritania and France
 * 1962 Algeria becomes independent

Algeria–Morocco

 * Tlemcen–Oujda
 * 1554 Morocco is established after a merger of small states, border between Saadi Sultanat and the Regency Of Algiers
 * 1710 Algiers (Algeria) becomes independent
 * Béchar–Casablanca
 * 1844 Border between France and Alaouite Sultanate established after a war
 * 1962 Algerian independence, Algerian borders has shrunk from Moulouya river to Kiss river

Algeria–Niger

 * 1960 Niger becomes independent, border between Niger and France
 * 1962 Algeria becomes independent

Algeria–Tunisia

 * 1956 Tunisia becomes independent, border between Tunisia and France
 * 1962 Algeria becomes independent

Angola–Democratic Republic of the Congo

 * 1960 Congolese independence, border between Congo-Léopoldville (DRC) and Portugal
 * 1975 Angola becomes independent

Angola–Namibia

 * 1975 Angola becomes independent, border between Angola and South Africa
 * 1990 Namibia becomes independent

Angola–Republic of the Congo

 * 1960 Congolese independence, border between Congo-Brazzaville (RC) and Portugal
 * 1975 Angola becomes independent

Angola–Zambia

 * 1964 Zambia becomes independent, border between Zambia and Portugal
 * 1975 Angola becomes independent

Benin–Burkina Faso

 * 1960 Independence for Benin and Burkina Faso

Benin–Niger

 * 1960 Independence for Benin and Niger

Benin–Nigeria

 * 1960 Independence for Benin and Nigeria

Burkina Faso–Togo

 * 1960 Independence for Burkina Faso and Togo

Burkina Faso–Ghana

 * 1957 Ghana becomes independent, border between Ghana and France
 * 1960 Togo becomes independent

Burkina Faso–Côte d'Ivoire

 * 1960 Independence for Burkina Faso and Côte d'Ivoire

Burkina Faso–Mali

 * 1960 Independence for Burkina Faso and Mali

Burkina Faso–Niger

 * 1960 Independence for Burkina Faso and Niger

Botswana–South Africa

 * 1931 South Africa becomes independent, border between South Africa and the United Kingdom
 * 1966 Botswana becomes independent

Botswana–Zimbabwe

 * 1966 Botswana becomes independent, border between Botswana and Rhodesia
 * 1980 Zimbabwe becomes independent

Botswana–Namibia

 * 1966 Botswana becomes independent, border between Botswana and South Africa
 * 1990 Namibia becomes independent

Burundi–Democratic Republic of the Congo

 * 16th century, Establishment of Burundi, border of Burundi
 * 1960 Congolese independence, border between Congo-Léopoldville (DRC) and Belgium
 * 1962 Burundi becomes independent

Burundi–Rwanda

 * 2nd Millennium, Establishment of Burundi and Rwanda
 * 1962 Burundi and Rwanda become independent from Belgium

Burundi–Tanzania

 * 16th century, Establishment of Burundi, border of Burundi
 * 1962 Burundi becomes independent, border between Burundi and Tanganyika
 * 1964 Establishment of Tanzania after a merger between Tanganyika and Zanzibar

Cameroon–Central African Republic

 * 1960 Independence for Cameroon and the Central African Republic

Cameroon–Republic of the Congo

 * 1960 Independence for Cameroon and Congo-Brazzaville (RC)

Central African Republic–Republic of the Congo

 * 1960 Central African and Congolese independence

Central African Republic–Democratic Republic of the Congo

 * 1960 Central African and Congolese independence

Central African Republic–Chad

 * 1960 Independence for the Central African Republic and Chad

Cameroon–Gabon

 * 1960 Independence for Cameroon and Gabon

Cameroon–Equatorial Guinea

 * 1960 Cameroon becomes independent, border between Cameroon and Spain
 * 1968 Equatorial Guinea becomes independent

Cameroon–Chad

 * 1960 Independence for Cameroon and Chad

Cameroon–Nigeria

 * Garoua–Maiduguri
 * 1960 Cameroon becomes independent, border between Cameroon and the British United Nations mandate of Cameroons
 * 1961 Northern Cameroons votes to become part of Nigeria
 * Bamenda–Yola
 * 1961 After a referendum it is decided that Northern Cameroons becomes part of Nigeria and Southern Cameroons part of Cameroon
 * Douala–Calabar
 * 1960 Nigerian independence, border between Nigeria and the British United Nations mandate of Cameroons
 * 1961 Southern Cameroons votes to become part of Cameroon

Chad–Libya

 * 1951 Libya becomes independent, border between Libya and France
 * 1960 Chad becomes independent

Chad–Niger

 * 1960 Independence for Chad and Niger

Chad–Nigeria

 * 1980s, Lake Chad nearly dried up, border of Chad and Nigeria becomes a land border

Central African Republic–Sudan

 * 1956 Sudanese independence from the United Kingdom and Egypt, border between Sudan and France
 * 1960 The Central African Republic becomes independent

Chad–Sudan

 * 1956 Sudanese independence from the United Kingdom and Egypt, border between Sudan and France
 * 1960 Chad becomes independent

Côte d'Ivoire–Mali

 * 1960 Independence for Côte d'Ivoire and Mali

Côte d'Ivoire–Guinea

 * 1958 Guinea becomes independent, border between Guinea and France
 * 1960 Côte d'Ivoire becomes independent

Côte d'Ivoire–Liberia

 * San Pédro–Harper
 * 1857 The Republic of Maryland joins Liberia, border of Liberia
 * 1960 Côte d'Ivoire becomes independent
 * Man–Zwedru
 * 1892 Border agreement between Liberia and France
 * 1960 Côte d'Ivoire becomes independent

Democratic Republic of the Congo–Sudan

 * 1956 Sudanese independence from the United Kingdom and Egypt, border between Sudan and Belgium
 * 1960 Congolese independence

Democratic Republic of the Congo–Republic of the Congo

 * 1960 Independence for both Congo's, both named Republic of the Congo at the time

Democratic Republic of the Congo–Rwanda

 * 2nd Millennium, Establishment of Rwanda, border of Rwanda
 * 1960 Congolese independence, border between Congo-Léopoldville (DRC) and Belgium
 * 1962 Rwanda becomes independent

Democratic Republic of the Congo–Uganda

 * 1960 Congolese independence, border between Congo-Léopoldville (DRC) and the United Kingdom
 * 1962 Uganda becomes independent

Democratic Republic of the Congo–Zambia

 * 1960 Congolese independence, border between Congo-Léopoldville (DRC) and the United Kingdom
 * 1964 Zambia becomes independent

Djibouti–Eritrea

 * 1977 Djibouti becomes independent, border between Djibouti and Ethiopia
 * 1991 Eritrean independence

Djibouti–Ethiopia

 * 1897 Border established between Abyssinia (Ethiopia) and France
 * 1977 Djibouti becomes independent

Djibouti–Somalia

 * 1960 Somalian independence, border between Somalia and France
 * 1977 Djibouti becomes independent

Egypt–Libya

 * 1922 Egyptian independence, border between Egypt and Italy (Italian Libya)
 * 1951 Libyan independence

Egypt–Sudan

 * 1956 Sudanese independence from the United Kingdom and Egypt

Equatorial Guinea–Gabon

 * 1960 Gabon becomes independent, border between Gabon and Spain
 * 1968 Equatorial Guinea becomes independent

Eritrea–Sudan

 * 1956 Sudanese independence from the United Kingdom and Egypt, border between Sudan and Ethiopia
 * 1991 Eritrean independence

Eritrea–Ethiopia

 * 1900/1902/1908 Border established between Abyssinia (Ethiopia) and Italy
 * 1991 Eritrean independence after the Ethiopian Civil War

Ethiopia–Kenya

 * 1907 Border agreement between Abyssinia (Ethiopia) and the British Empire
 * 1963 Kenya becomes independent

Ethiopia–Sudan

 * 1902 Border between Abyssinia (Ethiopia) and the United Kingdom established
 * 1956 Sudanese independence from the United Kingdom and Egypt, border between Sudan and Ethiopia

Ethiopia–Somalia

 * Harar–Hargeysa
 * 1897 Anglo-Egyptian Treaty, border between Abyssinia (Ethiopia) and the British Empire
 * 1960 Somalian independence
 * Adis Abeba–Muqdisho
 * 1897 Border agreement between Abyssinia (Ethiopia) and Italy
 * 1960 Somalian independence

Gabon–Republic of the Congo

 * 1960 Independence for Gabon and Congo-Brazzaville (RC)

The Gambia–Senegal

 * 1960 Senegal becomes independent, border between Senegal and the United Kingdom
 * 1965 The Gambia becomes independent

Ghana–Togo

 * 1957 Ghana becomes independent, border between Ghana and the French United Nations mandate of Togoland
 * 1960 Togo becomes independent

Ghana–Côte d'Ivoire

 * 1957 Ghana becomes independent, border between Ghana and France
 * 1960 Côte d'Ivoire becomes independent

Guinea–Liberia

 * 1892 Border agreement between Liberia and France
 * 1958 Guinea becomes independent

Guinea–Sierra Leone

 * 1958 Guinea becomes independent, border between Guinea and the United Kingdom
 * 1961 Sierra Leone becomes independent

Guinea–Mali

 * 1958 Guinea becomes independent, border between Guinea and France
 * 1960 Mali becomes independent

Guinea–Senegal

 * 1958 Guinea becomes independent, border between Guinea and France
 * 1960 Senegal becomes independent

Guinea–Guinea-Bissau

 * 1958 Guinea becomes independent, border between Guinea and Portugal
 * 1973/1974 Guinea-Bissau becomes independent

Guinea-Bissau–Senegal

 * 1960 Senegal becomes independent, border between Senegal and Portugal
 * 1973/1974 Guinea-Bissau becomes independent

Kenya–Sudan

 * 1956 Sudanese independence from the United Kingdom and Egypt, border between Sudan and the United Kingdom
 * 1963 Kenya becomes independent

Kenya–Somalia

 * 1960 Somalian independence, border between Somalia and the United Kingdom
 * 1963 Kenya becomes independent

Kenya–Uganda

 * 1962 Uganda becomes independent, border between Uganda and the United Kingdom
 * 1963 Kenya becomes independent

Kenya–Tanzania

 * 1963 Kenya becomes independent, border between Kenya and Tanganyika
 * 1964 Establishment of Tanzania after a merger between Tanganyika and Zanzibar

Lesotho–South Africa

 * Maseru–Pietermaritzburg
 * 1822 Establishment of Basutoland (Lesotho), border between Basutoland and the Zulu Kingdom
 * 1931 South Africa becomes independent, border between South Africa and the United Kingdom
 * 1966 Lesotho becomes independent.
 * Maseru–East London
 * 1822 Establishment of Basutoland (Lesotho), border between Basutoland and the Xhosa
 * 1931 South Africa becomes independent, border between South Africa and the United Kingdom
 * 1966 Lesotho becomes independent
 * Maseru–Bloemfontein
 * 1931 South Africa becomes independent, border between South Africa and the United Kingdom
 * 1966 Lesotho becomes independent

Libya–Niger

 * 1951 Libyan independence, border between Libya and France
 * 1960 Niger becomes independent

Libya–Sudan

 * 1951 Libyan independence, border between Libya and the United Kingdom
 * 1956 Sudanese independence from the United Kingdom and Egypt

Libya–Tunisia

 * 1951 Libya becomes independent, border between Libya and France
 * 1956 Tunisia becomes independent

Liberia–Sierra Leone

 * Robertsport–Freetown
 * 1847 Liberia becomes independent from the United States, border of Liberia
 * 1961 Sierra Leone becomes independent
 * Voinjama–Koidu
 * 1885 Border agreement between Liberia and the British Empire
 * 1961 Sierra Leone becomes independent

Mali–Senegal

 * 1960 Independence for Mali and Senegal

Mali–Mauritania

 * 1960 Independence for Mali and Mauritania

Malawi–Mozambique

 * 1964 Malawi becomes independent, border between Malawi and Portugal

Mali–Niger

 * 1960 Independence for Mali and Niger

Malawi–Tanzania

 * 1964 Establishment of Tanzania after a merger between Tanganyika and Zanzibar and the independence of Malawi

Malawi–Zambia

 * 1964 Malawi and Zambia becomes independent

Mauritania–Senegal

 * 1960 Independence for Mauritania and Senegal

Morocco–Spain

 * Nador - Melilla
 * 1894 borders between Morocco and Melilla were fixed.
 * Tanger - Ceuta
 * 17th century.

Mozambique–South Africa

 * 1931 South Africa becomes independent, border between South Africa and Portugal
 * 1975 Mozambique becomes independent from the Portuguese Empire.

Mozambique–Swaziland

 * 1830s, Swaziland is moved up north in order to reduce the pressure from the Zulus, border between Swaziland and Portugal
 * 1975 Mozambique becomes independent

Mozambique–Tanzania

 * 1964 Establishment of Tanzania after a merger between Tanganyika and Zanzibar, border between Tanzania and Portugal
 * Mozambique becomes independent

Mozambique–Zambia

 * 1964 Zambia becomes independent, border between Zambia and Portugal
 * 1975 Mozambique becomes independent

Mozambique–Zimbabwe

 * 1975 Mozambique becomes independent, border between Mozambique and Rhodesia
 * 1980 Zimbabwe becomes independent

Namibia–Zambia

 * 1964 Zambia becomes independent, border between Zambia and South Africa
 * 1990 Namibia becomes independent

Namibia–South Africa

 * 1990 Namibia becomes independent from South Africa

Niger–Nigeria

 * 1960 Independence for Niger and Nigeria

Rwanda–Tanzania

 * 2nd Millennium, Establishment of Rwanda, border of Rwanda
 * 1962 Rwanda becomes independent, border between Rwanda and Tanganyika
 * 1964 Establishment of Tanzania after a merger between Tanganyika and Zanzibar

Rwanda–Uganda

 * 2nd Millennium, Establishment of Rwanda, border of Rwanda
 * 1962 Independence of Rwanda and Uganda

Sudan–Uganda

 * 1956 Sudanese independence from the United Kingdom and Egypt, border between Sudan and the United Kingdom
 * 1962 Uganda becomes independent

South Africa–Eswatini

 * 1830s, Swaziland is moved up north in order to reduce the pressure from the Zulus, border of Swaziland
 * 1931 South Africa becomes independent, border between South Africa and the United Kingdom
 * 1968 Swaziland becomes independent

South Africa–Zimbabwe

 * 1931 South Africa becomes independent, border between South Africa and the United Kingdom
 * 1980 Zimbabwe becomes independent

Tanzania–Uganda

 * 1962 Uganda becomes independent, border between Uganda and Tanganyika
 * 1964 Establishment of Tanzania after a merger between Tanganyika and Zanzibar

Tanzania–Zambia

 * 1964 Establishment of Tanzania after a merger between Tanganyika and Zanzibar and the independence of Zambia

Zambia–Zimbabwe

 * 1964 Zambia becomes independent, border between Zambia and the United Kingdom
 * 1980 Zimbabwe becomes independent

Belize–Guatemala

 * 1840 Guatemala becomes independent from Central America, border between Guatemala and the United Kingdom
 * 1981 Belize becomes independent

Belize–Mexico

 * 1821 Mexico becomes independent from the Spanish Empire, border between Mexico and the United Kingdom
 * 1981 Belize becomes independent

Canada–United States

 * Saint John–Bangor
 * 1783 At the Treaty of Paris ending the American Revolutionary War, border between the United States and Great Britain
 * Edmundston–Presque Isle
 * 1842 At the Webster–Ashburton Treaty ending the Aroostook War, border between the United States and the United Kingdom
 * From Montréal–Boston to Thunder Bay–Minneapolis
 * 1783 At the Treaty of Paris, border between the United States and Great Britain
 * From Winnipeg–Grand Forks to Calgary–Great Falls
 * 1818 At the Treaty of 1818, border between the United States and the United Kingdom
 * Vancouver–Seattle
 * 1846 At the Oregon Treaty, border between the United States and the United Kingdom
 * Whitehorse–Juneau
 * 1903 At the Hay–Herbert Treaty, border between the United States and the British Empire
 * From Whitehorse–Anchorage to Inuvik–Prudhoe Bay
 * 1867 Alaska Purchase, border between the United States and the United Kingdom

Costa Rica–Panama

 * 1838 Costa Rica becomes independent, border between Colombia and Costa Rica
 * 1903 Panama becomes independent

Costa Rica–Nicaragua

 * 1838 Costa Rica and Nicaragua become independent

Dominican Republic–Haiti

 * 1804 Haiti becomes independent from the French Empire, border between Haiti and France
 * 1821/1844 The Dominican Republic becomes independent from Haiti

El Salvador–Guatemala

 * 1840 El Salvador and Guatemala become independent

El Salvador–Honduras

 * 1839 Honduras becomes independent from the Federal Republic of Central America, border between Honduras and the Federal Republic of Central America
 * 1840 El Salvador established after the dissolution of the Federal Republic of Central America

France–Netherlands

 * 1648 France and the Netherlands divide Saint Martin.

Guatemala–Honduras

 * 1839 Honduras becomes independent from the Federal Republic of Central America, border between Honduras and the Federal Republic of Central America

Guatemala–Mexico

 * 1821 Mexico becomes independent, border between Mexico and the Federal Republic of Central America
 * 1840 Guatemala becomes independent

Honduras–Nicaragua

 * 1838 Nicaragua becomes independent from the Federal Republic of Central America, border between Nicaragua and the Federal Republic of Central America
 * 1839 Honduras becomes independent

Mexico–United States

 * From Matamoros–Corpus Christi to Juárez–El Paso
 * 1848 At the Treaty of Guadalupe Hidalgo ending the Mexican-American War.
 * Hermosillo–Phoenix
 * 1853 Gadsden Purchase
 * Tijuana–San Diego
 * 1848 At the Treaty of Guadalupe Hidalgo

Argentina–Brazil

 * Puerto Iguazú–Foz do Iguaçu
 * 1814 Misiones is claimed by Argentina, border between Argentina and Portugal
 * Posadas–Pato Branco
 * 1927 Border between Argentina and Brazil is settled
 * Posadas–Porto Alegre
 * 1814 Misiones is claimed by Argentina, border between Argentina and Portugal
 * Corrientes–Santa Maria
 * 1820 After the division of the territory of the Liga Federal, border between the United Provinces of South America (Argentina) and Portugal

Argentina–Bolivia

 * 1825 Bolivian independence from the United Provinces of South America
 * 1925 Final border Treaty

Argentina–Chile

 * Salta–Antofagasta
 * 1884 Chile conquers the Bolivian Antofagasta Region
 * 1899 Border settled
 * Mendoza–Santiago de Chile
 * 1810 The United Provinces of South America (Argentina) becomes independent, border between Argentina and Spain
 * 1818 Chile becomes independent with help from Argentina
 * From Comodoro Rivadavia–Coihaique to Ushuaia–Punta Arenas
 * 1881 Boundary Treaty of 1881 between Chile and Argentina

Argentina–Paraguay

 * 1870 Border established after the Paraguayan War

Argentina–Uruguay

 * 1820 Liga Federal is dissolved and the United Provinces of South America annexes the western provinces, creating today's border
 * 1821 The remainder of Liga Federal is annexed by the United Kingdom of Portugal, Brazil and the Algarves
 * 1825 Uruguay declares independence
 * 1828 Uruguayan independence is recognized

Bolivia–Brazil

 * La Paz–Rio Branco
 * 1903 Treaty of Petropolis, Bolivia cedes Acre to Brazil
 * Riberalta–Bom Comérico
 * 1867 Bolivia cells northern Acre to Brazil
 * La Paz–Porto Velho
 * 1822 Brazilian independence, border between Brazil and Spain
 * 1825 Bolivian independence
 * Santa Cruz–Cuiabá
 * 1867 Bolivia cells parts of eastern Bolivia to Brazil
 * 1927 Final border Treaty

Bolivia–Chile

 * Julaca–Antofagasta
 * 1884 Chile conquers the Bolivian Antofagasta Region
 * La Paz–Arica
 * 1825 Bolivian independence, border between Bolivia and Peru
 * 1880 Arica is conquered by Chile

Bolivia–Paraguay

 * 1938 Chaco War ends with a truce, the current border created
 * 2009 A final Treaty is signed to clearly mark the border

Bolivia–Peru

 * La Paz–Arequipa
 * 1824 Spanish defeated in Peru, border between Peru and Spain
 * 1825 Bolivian independence
 * Riberalta–Cuzco
 * 1909 Border settled

Brazil–Colombia

 * 1907 Treaty of Bogotá, Brazil and Colombia agree on most of the border
 * 1928 The Tratado de Límites y Navegación Fluvial is signed, settling the border

Brazil–France

 * 1713 The Treaty of Utrecht creates a border between France and Portugal.
 * 1822 Brazil obtains independence

Brazil–Guyana

 * Santarém–Georgetown
 * 1822 Brazilian independence, border between Brazil and the United Kingdom
 * 1966 Guyana becomes independent
 * Boa Vista–Georgetown
 * 1904 Italy arbiters in a border dispute, border between Brazil and the British Empire
 * 1966 Guyana becomes independent
 * Boa Vista–Imbaimadai
 * 1822 Brazilian independence, border between Brazil and the United Kingdom
 * 1966 Guyana becomes independent

Brazil–Paraguay

 * Campo Grande–Forte Olimpo
 * 1870 Paraguay is defeated in the Paraguayan War and loses territory to Brazil, border between Brazil and the disputed Chaco area, claimed by both Bolivia and Paraguay
 * 1935 After the Chaco War
 * Campo Grande–Asunción
 * 1870 Paraguay is defeated in the Paraguayan War and loses territory to Brazil
 * Cascavel–Asunción
 * 1811 Paraguay becomes independent, border between Paraguay and Portugal
 * 1822 Brazilian independence

Brazil–Peru

 * Eirunepé–Iquitos
 * 1851 Border agreement
 * Rio Branco–Lima
 * 1909 Border agreement

Brazil–Suriname

 * 1906 Border between Brazil and the Netherlands defined in the Treaty of Limits
 * 1975 Suriname obtains independence

Brazil–Uruguay

 * 1825 Uruguay declares independence
 * 1828 Uruguay's independence is accepted by Brazil

Brazil–Venezuela

 * 1777 First Treaty of San Ildefonso is signed designating the border between Spain and Portugal
 * 1819 Gran Colombia becomes independent
 * 1822 Brazilian becomes independent
 * 1830 Venezuela becomes independent

Colombia–Ecuador

 * 1830 Ecuador becomes independent from Colombia
 * 1916 Final border Treaty

Colombia–Panama

 * 1903 Panama becomes independent from Colombia

Colombia–Peru

 * 1922 Border agreement between Colombia and Peru, territory disputed with Ecuador
 * 1942 Ecuador loses a war versus Peru

Colombia–Venezuela

 * 1830 Venezuela becomes independent from Colombia

Ecuador–Peru

 * Quito–Iquitos
 * 1942 After the Ecuadorian–Peruvian War, disputed
 * Cuenca–Sullana
 * 1830 Ecuador becomes independent, disputed

France–Suriname

 * 17th century, border between France and the Netherlands.
 * 1975 Surinamese independence.

Guyana–Suriname

 * Georgetown–Paramaribo
 * 1966 Guyana becomes independent, border between Guyana and the Netherlands
 * 1975 Suriname becomes independent
 * Joli–Majoli
 * 1966 Guyana becomes independent, border between Guyana and the Netherlands
 * 1975 Suriname becomes independent, disputed

Guyana–Venezuela

 * 1899 Border settled between Venezuela and the British Empire
 * 1966 Guyana becomes independent, border disputed

Hong Kong–China

 * Boundary Street
 * 1860 China under the Qing dynasty ceded Kowloon Peninsula to the British crown colony of Hong Kong
 * Sham Chun River, Sha Tau Kok River and Pak Kung Au
 * 1898 China under the Qing dynasty leased the New Territories to the United Kingdom until 1997, and was added to the crown colony of Hong Kong
 * Dongjiaotou
 * 2007 The Central People's Government of the People's Republic of China leased an area in Dongjiaotou for Hong Kong, one of PRC's special administrative regions, to establish a boundary checkpoint across the Deep Bay / Shenzhen Bay.

Algeria–Western Sahara

 * 1962 Algeria becomes independent, border between Algeria and Spain
 * 1975 Western Sahara becomes independent and is mostly occupied by Morocco

Mauritania–Western Sahara

 * 1960 Mauritania becomes independent, border between Mauritania and Spain
 * 1975 Western Sahara becomes independent and is mostly occupied by Morocco

Morocco–Western Sahara

 * 1884 Berlin Conference, Spain gains Western Sahara and subsequently occupies the territory, border between Morocco and Spain

Egypt–Palestinian Territories

 * 1841 The United Kingdom forces Egypt to retreat from the Levant, border between Egypt and the Ottoman Empire
 * 2005 Israel evacuates the Gaza Strip

Israel–Palestinian Territories

 * From Nazareth–Jenin to Beersheba–Hebron
 * 1948 Cease fire line in First Arab-Israeli War, border between Israel and Jordan
 * Beersheba–Gaza
 * 1948 Cease fire line in the war between Israel and the Arabs, border between Israel and Egypt
 * 2005 Israel evacuates the Gaza Strip

Jordan–Palestinian Territories

 * 1967 Israel conquers the West Bank, border between Jordan and Israel