Divided region

Divided regions are transnational regions, islands, etc. (i.e. areas that are known under a common name) that may have at one time been a united sovereign state but are or have been subsequently politically divided by national borders, into separate sovereign and/or administrative divisions. The later qualification includes many reorganized regions within nation states blurring the pure "transnational" distinction, but retaining the sense of a historic region once governed together which is significant both historically and culturally.

Typically the divided parts still retain the common geographical placename, or a variation thereof, and may or may not be subject to irrendentist claims and territorial disputes. They are by their very nature situated in border areas.

Divided regions frequently have close cultural, economic and transportation ties and not infrequently authorities or commissions which smooth the process of co-operative efforts across their common borders.

Africa

 * Congo
 * Democratic Republic of the Congo
 * Republic of the Congo
 * Cabinda Province, Angola
 * Zaire Province, Angola
 * The Guineas
 * Guinea-Conakry
 * Guinea-Bissau
 * Equatorial Guinea
 * Greater Somalia
 * Somalia
 * Somaliland (unrecognised)
 * Somali Region, Ethiopia
 * Sudan (region)
 * Sudan
 * South Sudan
 * Sudanian Savanna
 * Mali, formerly French Sudan
 * Western Sahara
 * Southern Provinces, Morocco
 * Free Zone, Sahrawi Arab Democratic Republic

East Asia

 * Fujian
 * Fujian Province, People's Republic of China
 * Fujian Province, Republic of China
 * Greater China
 * People's Republic of China
 * Republic of China (Taiwan)
 * Korea
 * North Korea
 * South Korea
 * Mongolian Plateau
 * Buryatia
 * Irkutsk Oblast
 * Mongolia
 * Inner Mongolia, People's Republic of China

South Asia

 * Balochistan
 * Balochistan, Afghanistan
 * Balochistan, Pakistan
 * Sistan and Baluchestan Province, Iran


 * Bengal
 * West Bengal, India
 * Bangladesh


 * Kashmir
 * Azad Kashmir, Pakistan
 * Aksai Chin, People's Republic of China
 * Gilgit-Baltistan, Pakistan
 * Jammu and Kashmir, India
 * Ladakh, India
 * Trans-Karakoram Tract, People's Republic of China


 * Pakhtunkhwa
 * Pakhtunkhwa, Afghanistan
 * Pakhtunkhwa, Pakistan


 * Punjab
 * Chandigarh, India
 * Haryana, India
 * Himachal Pradesh, India
 * Punjab, India
 * Punjab, Pakistan

Southeast Asia

 * Gò Công (region)
 * Gò Công
 * Gò Công Đông
 * Gò Công Tây
 * Trà My
 * Bắc Trà My
 * Nam Trà My
 * Từ Liêm
 * Bắc Từ Liêm
 * Nam Từ Liêm
 * Timor
 * East Timor
 * West Timor
 * Borneo
 * Brunei
 * Malaysian Borneo
 * Kalimantan

West Asia and Middle East

 * Anatolia
 * Turkey
 * Kastellorizo island (Greece)
 * Armenia (region)
 * Armenia
 * Western Armenia (Turkey)
 * Nagorno-Karabakh
 * Nakhchivan Autonomous Republic (Azerbaijan)
 * Javakheti (Georgia)
 * Azerbaijan (region)
 * Republic of Azerbaijan
 * Azerbaijan (Iran)
 * Cyprus
 * Republic of Cyprus
 * Northern Cyprus
 * Golan Heights
 * Kingdom of Jordan
 * Republic of Syria
 * Syrian opposition
 * Tahrir al-Sham
 * Khalid ibn al-Walid Army
 * UNDOF
 * Land of Israel and Palestine (region)
 * Israel
 * Palestine
 * Kurdistan (region)
 * Iranian Kurdistan
 * Iraqi Kurdistan
 * Syrian Kurdistan
 * Turkish Kurdistan
 * Ossetia
 * South Ossetia (Georgia)
 * Republic of North Ossetia-Alania (Russia)
 * Syria (region)
 * Syria
 * Lebanon
 * Hatay Province (Turkey)
 * Southeastern Anatolia Region (Turkey)
 * Israel
 * Palestine
 * Jordan

Regions

 * Anatolia
 * Turkey
 * Kastellorizo island (Greece)
 * Bačka
 * Hungarian Bačka
 * Serbian Bačka
 * Banat
 * Hungarian Banat
 * Romanian Banat
 * Serbian Banat
 * Baranya
 * Croatian Baranya
 * Hungarian Baranya
 * Basques Countries
 * Spanish Basque countries
 * French Basque countries
 * Brabant
 * Flemish Brabant and Walloon Brabant (Belgium)
 * North Brabant (Netherlands)
 * Bukovina
 * Ukrainian Bukovina
 * Romanian Bukovina
 * Carinthia
 * Austrian Carinthia
 * Slovene Carinthia
 * Catalonia
 * Spanish Catalonia
 * French Catalonia
 * Crișana
 * Romanian Crișana
 * Körösvidék (Hungarian Crișana)
 * Pomorišje (Serbian Crișana)
 * Dainava (Dzūkija)
 * Lithuanian Dainava
 * Polish Dainava
 * Belarussian Dainava
 * Dalmatia
 * Croatian Dalmatia
 * Montenegrin Dalmatia
 * Dobrudja
 * Northern Dobrudja (Romania)
 * Southern Dobrudja (Bulgaria)
 * Epirus
 * Epirus (Greece)
 * Northern Epirus (Albania)
 * Flanders
 * Flanders (Belgium)
 * French Flanders
 * Zeelandic Flanders (Netherlands)
 * Frisia
 * West Frisia (Netherlands)
 * East Frisia and North Frisia (Germany)
 * Galicia and Red Ruthenia
 * Lesser Poland and Subcarpathian Poland
 * Western Ukraine
 * Galicia
 * Galicia (Spain)
 * Northern Portugal
 * Hainaut
 * Belgian Hainaut
 * French Hainaut
 * Insubria
 * Italian Insubria
 * Canton Ticino (Swiss Insubria)
 * Ireland
 * Republic of Ireland
 * Northern Ireland (United Kingdom)
 * Istria
 * Croatian Istria
 * Italian Istria
 * Slovene Istria
 * Karelia
 * Republic of Karelia (Russia)
 * Finnish Karelia
 * Lapland/Sápmi
 * Finnmark (Norway)
 * Lapland (Sweden)
 * Lapland (Finland)
 * Russian Lapponia
 * Limburg
 * Limburg (Netherlands)
 * Limburg (Belgium)
 * Lithuania Minor (Prussian Lithuania)
 * Lithuania Minor (Lithuania)
 * Kaliningrad Region
 * Livonia
 * Estonian Livonia
 * Latvian Livonia
 * Luxembourg
 * Luxembourg (Belgium)
 * Luxembourg
 * Macedonia
 * Macedonia (Greece)
 * North Macedonia
 * Pirin Macedonia (Bulgaria)
 * Mala Prespa and Gollobordë (Albania)
 * Maramureș
 * Romanian Maramureș
 * Ukrainian Maramureș
 * Moldavia, Bessarabia and Transnistria
 * Moldova
 * Western Moldavia (Romania)
 * Budjak
 * Bukovina
 * Northern Moldavia (Ukraine)
 * Northlands (Scandinavia)
 * Norwegian Nordland
 * Swedish Norrland
 * Occitania
 * Occitania (Southern France)
 * Occitan Valleys (Italy)
 * Aran Valley (Spain)
 * Monaco
 * Drina and Podrinje
 * Bosnian Podrinje
 * Romanija (Republika Srpska)
 * Western Serbia
 * Polesia
 * Belarussian Polesia
 * Ukrainian Polesia
 * Podlachia (Polish Polesia)
 * Pomerania
 * Mecklenburg-West Pomerania (Germany)
 * Pomerania, West Pomerania and Kuyavia-Pomerania (Poland)
 * Posavina
 * Croatian Posavina
 * Bosnian Posavina
 * Serbian Posavina
 * Prussia
 * Germany (Prussian Saxony, Rhenish Prussia, Prussian Brandenburg, Prussian Pomerania, Prussian Westphalia, Hanover, Hesse-Nassau, Schleswig-Holstein, Hohenzollern Lands)
 * Poland (West Prussia, East Prussia, Prussian Pomerania, Posen)
 * Lithuania (East Prussia)
 * Kaliningrad region, Russia (East Prussia)
 * Vojvodina (Serbia)
 * Sandžak
 * Montenegrin Sandžak
 * Serbian Sandžak
 * Schleswig
 * Northern Schleswig (Denmark)
 * Southern Schleswig (Germany)
 * Silesia
 * Lower Silesia and Upper Silesia (Poland)
 * Czech Silesia
 * German Silesia
 * Styria
 * Austrian Styria
 * Slovene Styria
 * Syrmia
 * Croatian Syrmia
 * Serbian Syrmia
 * Thrace
 * East Thrace (Turkey)
 * North Thrace (Bulgaria)
 * West Thrace (Greece)
 * Tornedalia
 * Finnish Tornedalia
 * Swedish Tornedalia
 * Prekmurje (Transmurania)
 * Slovene Prekmurje
 * Hungarian Muravidék
 * Tyrol
 * Tyrol (Austria)
 * South Tyrol (Italy)
 * Volynia
 * Ukrainian Volynia
 * Polish Volynia
 * Belarussian Volynia

Municipalities and Cities

 * Baarle-Nassau (Netherlands) and Baarle-Hertog (Belgium)
 * Bad Muskau (Germany) and Łęknica (Poland)
 * Bad Radkersburg (Austria) and Gornja Radgona (Slovenia)
 * Beausoleil (France) and Monaco
 * Brod (Bosnia and Herzegovina) and Slavonski Brod (Croatia)
 * Chiasso (Switzerland) and Como (Italy)
 * Cieszyn (Poland) and Český Těšín (Czech Republic)
 * Comines (France) and Comines-Warneton (Belgium)
 * Deryneia (Cyprus) and Kàto Deryneia (Northern Cyprus)
 * Doirani (Greece) and Dojran (North Macedonia)
 * Forst (Germany) and Zasieki (Poland)
 * Frankfurt an der Oder (Germany) and Słubice (Poland)
 * Goegnies-Chaussée (Belgium) and Gognies-Chaussée (France)
 * Gmünd (Austria) and České Velenice (Czech Republic)
 * Gorizia (Italy) and Nova Gorica (Slovenia)
 * Görlitz (Germany) and Zgorzelec (Poland)
 * Grosbliederstroff (France) and Kleinblittersdorf (Germany)
 * Guben (Germany) and Gubin (Poland)
 * Hasi (Kosovo) and Has (Albania)
 * Herzogenrath (Germany) and Kerkrade (Netherlands)
 * Komárno (Slovakia) and Komárom (Hungary)
 * Kreuzlingen (Switzerland) and Konstanz (Germany)
 * Küstriner Vorland (Germany) and Kostrzyn nad Odrą (Poland)
 * Laufenburg (Switzerland) and Laufenburg (Germany)
 * Lavena Ponte Tresa (Italy) and Ponte Tresa (Switzerland)
 * Lucelle (France) and Lucelle (Switzerland)
 * Kosovska Mitrovica (Kosovo) and North Kosovska Mitrovica (North Kosovo)
 * Mondorf-les-Bains (Luxembourg) and Mondorff (France)
 * Narva (Estonia) and Ivangorod (Russia)
 * Nicosia (Cyprus) and North Nicosia (Northern Cyprus)
 * Obergailbach (France) and Niedergailbach (Germany)
 * Petite-Rosselle (France) and Großrosseln (Germany)
 * Pogoni (Greece) and Pogon (Albania)
 * Quiévrain (Belgium) and Quiévrechain (France)
 * Rheinfelden (Switzerland) and Rheinfelden (Germany)
 * Rome (Italy) and Vatican City
 * Saint-Gingolph (France) and Saint-Gingolph (Switzerland)
 * Sátoraljaújhely (Hungary) and Slovenské Nové Mesto (Slovakia)
 * Scheibenhard (France) and Scheibenhardt (Germany)
 * Valga (Estonia) and Valka (Latvia)
 * Veľké Slemence (Slovakia) and Mali Selmentsi (Ukraine)
 * Wervik (Belgium) and Wervicq-Sud (France)
 * Zvornik (Bosnia and Herzegovina) and Mali Zvornik (Serbia)

North America

 * The Californias
 * California, United States
 * Baja California Peninsula, Mexico
 * Baja California
 * Baja California Sur
 * Mexico
 * New Mexico, United States

Island divisions

 * Hispaniola
 * Dominican Republic
 * Haiti
 * Virgin Islands
 * British Virgin Islands, British Overseas Territories,
 * United States Virgin Islands, Unincorporated territories of the United States,
 * Spanish (or Puerto Rican) Virgin Islands, Commonwealth of Puerto Rico, unincorporated territory of the United States.
 * Saint Martin
 * Netherlands
 * France

Municipalities

 * Texarkana, Arkansas and Texarkana, Texas
 * Kansas City, Missouri and Kansas City, Kansas

Provinces or states

 * Dakota
 * North Dakota
 * South Dakota
 * The Carolinas
 * North Carolina
 * South Carolina
 * Virginia
 * Virginia
 * West Virginia

South America

 * Amazonas
 * Colombia
 * Peru
 * Brazil
 * Venezuela
 * The Guianas
 * Guyana, formerly United Kingdom territory
 * Suriname, formerly Netherlands territory
 * French Guiana, France
 * Guayana Esequiba, Venezuela
 * Amapá, Brazil
 * Patagonia
 * Argentina
 * Tierra del Fuego
 * Argentina
 * Pampas
 * Argentina
 * Uruguay

Oceania

 * Mariana Islands
 * Northern Mariana Islands
 * Guam
 * New Guinea
 * Western New Guinea, Indonesia
 * Papua New Guinea
 * Samoan Islands
 * Samoa
 * American Samoa, United States
 * Solomon Islands (archipelago)
 * Solomon Islands
 * North Solomon Islands, Papua New Guinea

1900s

 * Germany
 * West Germany
 * East Germany
 * Vietnam
 * North Vietnam
 * South Vietnam
 * Yemen
 * North Yemen
 * South Yemen

Pre-1900s

 * Carolingian Empire
 * West Francia
 * Middle Francia
 * East Francia
 * Roman Empire
 * Western Roman Empire
 * Eastern Roman Empire
 * United States
 * Union States
 * Confederate States