This is a list of countries in the 1910s, giving an overview of states around the world during the period between 1 January 1910 and 31 December 1919. It contains entries, arranged alphabetically, with information on the status and recognition of their sovereignty. It includes widely recognized sovereign states, and entities which were de facto sovereign but which were not widely recognized by other states.

Sovereign states
{| border="0" cellpadding="0" style="text-align:left; font-size: 95%; border-collapse: collapse; border: 0px solid #AAAAAA;"
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!width=60%|Name and capital city
!width=70%|Information on status and recognition of sovereignty
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 A 
|-
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|-
|valign=top|  – Emirate of Afghanistan 
Widely recognized independent state from August 8, 1919.
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|-
|valign=top|  →  Albania 
 Independent Albania  
 Principality of Albania  
Limited sovereignty for occupatio bellica by the Balkan League states. Recognized independent state de facto from July 29, 1913.http://www.albanianhistory.net/1912_Declaration-of-Independence/index.html
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|valign=top|  Andorra – Principality of Andorra
Widely recognized independent state.
|-
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|valign=top|  – Argentine Republic 
Widely recognized independent state
|-
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|-
|valign=top| Armenia – Republic of Armenia  
 Widely recognized state.
|-
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|valign=top|  Asir – Idrisid Emirate of Asir  
Widely recognized independent state
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|valign=top| – Commonwealth of Australia 
Widely recognized independent state. Australia is autonomous but still dependent from the United Kingdom. Australia had two external territories:
  Norfolk Island 
 
|-
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|-
|valign=top| Austria  
 Republic of German-Austria 
 Republic of Austria 
Widely recognized independent state.
|-
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|valign=top| – Austro-Hungarian Empire  
 Widely recognized independent state. Austria-Hungary had one concession:
  Tientsin 
|-
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|valign=top| Azerbaijan – Azerbaijan Democratic Republic   
 Widely recognized state.
|-
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|-
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 B 
|-
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|valign=top| – Kingdom of Belgium 
 Widely recognized state. Belgium had one colony and one concession:
  
  Tientsin 
|-
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|-
|valign=top|Bhutan – Kingdom of Bhutan  
 Widely recognized state.
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|valign=top| – Republic of Bolivia 
 Widely recognized state.
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|valign=top| Brazil – Republic of the United States of Brazil 
 Widely recognized state. Brazil was a federation of 20 states, one territory, and one federal district.
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|valign=top| – Kingdom of Bulgaria 
 Widely recognized state.
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 C 
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|valign=top| – Dominion of Canada 
 Widely recognized state. Canada is autonomous but still dependent from the United Kingdom.
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|valign=top| – Republic of Chile 
 Widely recognized state.
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|valign=top| →  →  →  China 
 Great Qing 
 Republic of China 
 Empire of China 
 Republic of China 

 Widely recognized state.
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|-
|valign=top| – Republic of Colombia 
 Widely recognized state.
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|valign=top| Costa Rica– First Republic of Costa Rica 
 Widely recognized state.
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|valign=top| – Cretan State  
 Autonomous state of the Ottoman Empire; de jure until December 1, 1913.
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|valign=top| – Republic of Cuba 
 Widely recognized state.
|-
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|valign=top| Czechoslovakia – Czechoslovak Republic  
|
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 D 
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|valign=top| – Kingdom of Denmark 
 Widely recognized state. Denmark had two colonies and one dependency:
  Danish West Indies 
  Greenland 
  
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|valign=top| – Dominican Republic 
 Widely recognized state.
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 E 
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|valign=top| – Republic of Ecuador 
 Widely recognized state.
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|valign=top| →  El Salvador – Republic of El Salvador 
 Widely recognized state.
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|-
|valign=top|  Estonia
 Republic of Estonia  
 Commune of the Working People of Estonia  
 Widely recognized state.
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|valign=top| – Ethiopian Empire 
 Widely recognized state.
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F
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|-
|valign=top| →  &  Finland 
 Kingdom of Finland 
 Republic of Finland 
 Finnish Socialist Workers' Republic 
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|-
|valign=top| France – French Republic 
 Widely recognized state. The following are colonies, concessions and protectorates of France:
  Comoros 
  
  
  
  French India - French Establishments in India 
  
  French Oceania - Settlements in Oceania 
  
  
  
  Madagascar 
  
  
  
  Saint Pierre and Miquelon 
  Shanghai 
  Tientsin 
  Tunisia - Tunisian Realm 
  Wallis and Futuna - Protectorate of the Wallis and Futuna Islands 
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G
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|valign=top| Georgia – Democratic Republic of Georgia  
 Widely recognized state. Immediately recognized by Germany and the Ottoman Empire.
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|valign=top| →  Germany – German Realm 
 German Empire 
 Weimar Republic 
 Widely recognized state. The following are colonies, concessions and protectorates of Germany:
  
  German Kiautschou 
  
  German Samoa 
  German South-West Africa 
  Kamerun 
  Tientsin 
  Togoland 
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|valign=top| – Kingdom of Greece 
 Widely recognized state.
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|valign=top| – Republic of Guatemala 
 Widely recognized state.
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H
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|valign=top| Ha'il – Emirate of Jabal Shammar 
 Widely recognized state.
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|-
|valign=top| – Republic of Haiti 
 Widely recognized state.
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|valign=top| →  Hejaz – Hashemite Kingdom of Hejaz  
 Widely recognized state.
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|valign=top| Honduras – Republic of Honduras 
 Widely recognized state.
|-
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|valign=top| →  →  →  Hungary 
 First Hungarian Republic 
 Hungarian Soviet Republic 
 Hungarian People's Republic 
 Hungarian Republic 
 Unrecognized state from August 1 to 8, 1919.
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I
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|valign=top| Iceland – Kingdom of Iceland  
 Widely recognized independent state. Still dependent from Denmark.
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|valign=top| – Kingdom of Italy 
 Widely recognized state. Italy had four colonies and one concession:
  Italian Cyrenaica 
  Italian Eritrea 
  Italian Somaliland 
  Italian Tripolitania 
  Tientsin 
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J
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|valign=top| – Empire of Japan 
 Widely recognized state. Japan had three dependencies and two concessions:
  Chōsen 
  Karafuto 
  Kwantung 
  Taiwan 
  Tientsin 

Japan administered one League of Nations mandate:
  South Seas Mandate 
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K
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|valign=top| →  Korea  
 Korean Empire 
 Provisional Government of the Republic of Korea 
 Widely recognized state. Annexed by Japan from August 29, 1910 to April 11, 1919.
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L
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|-
|valign=top| &  Latvia 
  Republic of Latvia  
   
 Widely recognized state.
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|valign=top| – Republic of Liberia 
 Widely recognized state.
|-
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|valign=top| – Principality of Liechtenstein 
 Widely recognized state.
|-
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|valign=top| →  &  Lithuania 
 Kingdom of Lithuania 
 Lithuanian Soviet Socialist Republic 
 Republic of Lithuania 
 Widely recognized state.
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|valign=top| – Grand Duchy of Luxembourg 
 Widely recognized state. Limited sovereignty for occupatio bellica.
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M
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|valign=top| – United Mexican States 
 Widely recognized state. Mexico had one territory:
  Isla de la Pasión 
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|valign=top| – Principality of Monaco 
 Widely recognized state.
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|valign=top| Mongolia - Great Mongolian State  
 Widely recognized state. Still dependent from China.
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|valign=top| →  Montenegro 
 Principality of Montenegro 
 Kingdom of Montenegro 
 Widely recognized state. Limited sovereignty for occupatio bellica to December 1, 1918.
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|valign=top| – Sultanate of Morocco  
 De jure sovereign state under French and Spanish protectorate from 1912.
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|valign=top|  Mountain Republic - Mountainous Republic of the Northern Caucasus  
 Widely recognized state.
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N
|-
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|-
|valign=top| →  Riyadh / Nejd 
 Emirate of Riyadh 
 Emirate of Nejd and Hasa 
 Widely recognized state.
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|valign=top| Nepal – Kingdom of Nepal 
 Widely recognized state.
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|valign=top| – Kingdom of the Netherlands 
 Widely recognized state. The Netherlands had two colonies and one possession:
  Curaçao - Curaçao and Dependencies 
  
  Netherlands Guiana 
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|valign=top| – Dominion of Newfoundland 
 Widely recognized state. Newfoundland is autonomous but still dependent from the United Kingdom.
|-
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|valign=top| New Zealand – Dominion of New Zealand 
 Widely recognized state. New Zealand is autonomous but still dependent from the United Kingdom. The following are territories of New Zealand:
  Cook Islands 
  Niue Island 
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|valign=top| – Republic of Nicaragua 
 Widely recognized state.
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|valign=top| – Kingdom of Norway 
 Widely recognized state. Norway had three possessions:
  Bouvet Island 
  Peter I Island 
  Sverdrup Islands 
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O
|-
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|valign=top| – Sublime Ottoman State 
 Widely recognized state. Ottoman Empire had one protectorate:
  North Caucasian Emirate 
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|valign=top|Wadai – Sultanate of Wadai  
 Widely recognized state.
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P
|-
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|-
|valign=top| – Republic of Panama 
 Widely recognized state.
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|valign=top| – Republic of Paraguay 
 Widely recognized state.
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|valign=top| Persia – Persian Empire 
 Widely recognized state.
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|valign=top| – Peruvian Republic 
 Widely recognized independent state.
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|valign=top| Poland 
 Kingdom of Poland 
 Second Polish Republic 
 Client / Puppet state of Germany until November 11, 1918. Widely recognized independent state from November 11, 1918.
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|-
|valign=top| →  
 Kingdom of Portugal 
 Portuguese Republic 
 Widely recognized independent state. The following are colonies, vassals and possessions of Portugal:
  Cape Verde Islands 
  Kongo - Kingdom of Kongo 
  Portuguese Macau 
  Portuguese East Africa 
  
  Portuguese India - Portuguese State of India 
  
  Portuguese West Africa 
  São João Baptista de Ajudá - Fort of São João Baptista de Ajudá 
  São Tomé and Príncipe 
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R
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|valign=top| – Kingdom of Romania 
 Widely recognized state.
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|valign=top| →  →  →  Russia 
 Russian Empire 
 Russia 
 Russian Empire 
 Russian Republic 
 Russian Soviet Federative Socialist Republic 
 Widely recognized state. Russia had two protectorates, one concession and one autonomous grand duchy:
  Bukhara 
  Khiva 
  Tientsin 
  Finland 
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S
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|valign=top| – Most Serene Republic of San Marino 
 Widely recognized state.
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|valign=top| →  Serbia / Serbs, Croats and Slovenes 
 Kingdom of Serbia 
 Kingdom of Serbs, Croats and Slovenes 
 Widely recognized state. Limited sovereignty for occupatio bellica to December 1, 1918.
|-
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|valign=top| →  →  Siam – Kingdom of Siam  
 Widely recognized state.
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|valign=top| →  – Union of South Africa  
 Widely recognized independent state. South Africa is autonomous but still dependent from the United Kingdom.
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|valign=top| Spain – Kingdom of Spain 
 Widely recognized state. Spain had three possessions and three colonies:
  Annobón 
  Fernando Pó 
  Ifni 
  Río Muni 
  Spanish North Africa 
  
  Spanish West Africa 
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|valign=top| Sulu – Sultanate of Sulu  
 Widely recognized state.
|-
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|valign=top| – Kingdom of Sweden 
 Widely recognized state.
|-
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|valign=top| – Swiss Confederation 
 Widely recognized state.
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T
|-
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|valign=top| Tibet  
 De facto independent state. Claimed by the Republic of China.
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|valign=top| Transcaucasia – Transcaucasian Democratic Federative Republic  
 Widely recognized independent state.
|-
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U

|-
|valign=top|  – United Kingdom of Great Britain and Ireland 
 Widely recognized state. The following are colonies, territories, dependencies and protectorates of the United Kingdom:
  Aden - Aden Protectorate 
  Afghanistan - Emirate of Afghanistan 
  Ascension Island 
  Bahama Islands 
  Bahrain - State of Bahrain 
  Baker Island 
  
  Basutoland - Territory of Basutoland 
  Bechuanaland - Bechuanaland Protectorate 
  Bermuda 
  Bhutan - Kingdom of Bhutan 
 British East Africa - British East Africa Protectorate 
  British Guiana 
  
  British Leeward Islands - Federal Colony of the Leeward Islands 
  British Somaliland 
  British Western Pacific Territories 
  British Windward Islands - Federal Colony of the Windward Islands 
  Brunei - State of Brunei  
  
  Cyprus 
  Egypt - Sultanate of Egypt 
  Falkland Islands 
  Federated Malay States 
  Gambia - Gambia Colony and Protectorate 
  Gibraltar 
  
  Graham Land 
  Guernsey - Bailiwick of Guernsey 
  Heard Island and McDonald Islands 
  Hong Kong 
  - Indian Empire 
  
  
  Jarvis Island 
  - Bailiwick of Jersey 
  - State of Johor Darul Ta'zim 
  - State of Kedah Darul Aman 
  - State of Kelantan Darul Naim 
  Kuwait - State of Kuwait 
  Lagos Colony 
  Maldive Islands - Sultanate of the Maldive Islands 
  Malta 
  Mauritius 
  Muscat and Oman - Sultanate of Muscat and Oman 
  Nepal - Kingdom of Nepal 
  Nigeria - Colony and Protectorate of Nigeria 
  
  Northern Nigeria - British Northern Nigeria Protectorate 
  Northern Rhodesia - Protectorate of Northern Rhodesia 
  - Nyasaland Protectorate  
  - State of Perlis Indera Kayangan 
  Phoenix Islands 
  Pitcairn Islands 
  Saint Helena 
  - Kingdom of Sarawak 
  Seychelles 
  Sierra Leone - Sierra Leone Colony and Protectorate 
  South Orkney Islands 
  South Shetland Islands 
  Southern Nigeria - British Southern Nigeria Protectorate 
  Southern Rhodesia - Colony of Southern Rhodesia 
  
  Suez Canal Zone 
  Swaziland - Swaziland Protectorate 
  Terengganu - State of Terengganu Darul Iman 
  
  Tristan da Cunha 
  Trucial States 
  Uganda 
  Victoria Land 
  Weihai 
  Zanzibar 
|-
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|valign=top|  →  – United States of America 
 Widely recognized state. The following are territories of the United States of America:
  Alaska - Alaska Territory 
  American Samoa - Territory of American Samoa 
  Bajo Nuevo Bank 
  Guam - Territory of Guam 
  Hawaii- Territory of Hawaii 
  Howland Island 
  Johnston Atoll 
  Kingman Reef 
  Middlebrook Island 
  Midway Atoll 
  Nicaragua 
  Navassa Island 
  
  Philippine Islands 
  
  Quita Sueño Bank 
  Roncador Bank 
  Serrana Bank 
  Serranilla Bank 
  Swan Islands 
  Wake Island 
|-
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|valign=top| Upper Asir - Sheikdom of Upper Asir  
 Widely recognized state.
|-
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|valign=top| – Eastern Republic of Uruguay 
 Widely recognized state.
|-
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V
|-
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|-
|valign=top| – United States of Venezuela 
 Widely recognized state.
|-
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 Y 
|-
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|valign=top| Yemen – Mutawakkilite Kingdom of Yemen  
Widely recognized independent state.
|-
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Non-sovereign territories
United Kingdom
  – Cape of Good Hope (to May 31, 1910) 

Under provisional government
  Autonomous Republic of Northern Epirus
 self declared independence 
 recognized autonomous inside the Principality of Albania 

States claiming sovereignty
|-
|valign=top| Alash – Alash Autonomy  
 Unrecognized state from 1917.
|-
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|-
|valign=top| Alsace-Lorraine – Alsace-Lorraine Soviet Republic  
 Unrecognized Soviet republic.
|-
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|-
|valign=top| Aras – Republic of Aras  
 Unrecognized state.
|-
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|-
|valign=top| Banat Republic – Banat Republic  
 Unrecognized state. Client state of the Hungarian Republic to 1918. Client state of the Kingdom of Serbs, Croats and Slovenes from 1918 to 1919.
|-
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|-
|valign=top| →  Bavaria 
 People's State of Bavaria 
 Bavarian Soviet Republic 
 Unrecognized socialist state.
|-
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|-
|valign=top| →  Belarus
 Belarusian People's Republic –  
 Socialist Soviet Republic of Byelorussia  
 Partially-recognized state from 1918 to 1919. Puppet/Buffer State of Soviet Russia from January 1, 1919.
|-
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|valign=top| Bottleneck – Free State Bottleneck  
 Unoccupied territory within post-World War I Germany.
|-
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|-
|valign=top| Bremen – Bremen Soviet Republic  
 Unrecognized state.
|-
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|-
|valign=top| Central Albania – Republic of Central Albania  
 Former unrecognized state.
|-
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|-
|valign=top| Centrocaspian Dictatorship – Centro-Caspian Dictatorship  
 Unrecognized state.
|-
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|-
|valign=top| Courland and Semigallia – Duchy of Courland and Semigallia  
 Client state of Germany.
|-
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|-
|valign=top|  →  Crimea 
 Crimean People's Republic 
 Crimea – Crimean Socialist Soviet Republic 
 Self-proclaimed autonomy of the Russian Democratic Federative Republic.
|-
|colspan=2|

|-
|valign=top| Don – Don Republic  
 Unrecognized state.
|-
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|-
|valign=top| Donbas and Kryvbas – Donets-Krivoy Rog Soviet Republic  
 Unrecognized, self-declared state.
|-
|colspan=2|

|-
|valign=top| Hutsul Republic  
 Unrecognized state.
|-
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|-
|valign=top| Icaria – Free State of Icaria  
 Unrecognized state.
|-
|colspan=2|

|-
|valign=top| Idel-Ural – Idel-Ural State  
 Semi-Independent state.
|-
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|-
|valign=top| Ireland – Irish Republic  
 Revolutionary state.
|-
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|-
|valign=top| Kars Republic – Provisional National Government of the Southwestern Caucasus  
 Nominally-independent provisional government.
|-
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|-
|valign=top| Khiva – Khanate of Khiva 
 Semi-independent state. Under Russian Protection.
|-
|colspan=2|

|-
|valign=top| Komancza – Komancza Republic  
 Microstate.
|-
|colspan=2|

|-
|valign=top| – Kuban People's Republic  
 Unrecognized state.
|-
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|-
|valign=top| Lemko Republic – Lemko-Rusyn People's Republic  
 Unrecognized state from December 5, 1918.
|-
|colspan=2|

|-
|valign=top| Lithuania-Byelorussia – Lithuanian-Byelorussian Soviet Socialist Republic  
 Soviet puppet state from February 17 to July 17, 1919.
|-
|colspan=2|

|-
|valign=top| North Ingria – Republic of North Ingria  
 Unrecognized state.
|-
|colspan=2|

|-
|valign=top| Odessa – Odessa Soviet Republic  
 Puppet state of Soviet Russia.
|-
|colspan=2|

|-
|valign=top| Perloja – Republic of Perloja 
 Unrecognized state.
|-
|colspan=2|

|-
|valign=top|  Saxony – Soviet Republic of Saxony  
 Unrecognized state.
|-
|colspan=2|

|-
|valign=top|  Slovakia – Slovak Soviet Republic  
 Puppet state of the Hungarian Soviet Republic.
|-
|colspan=2|

|-
|valign=top|  Slovenes, Croats and Serbs – State of Slovenes, Croats and Serbs  
 Unrecognized provisional government.
|-
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|-
|valign=top|  Syria – Arab Kingdom of Syria  
 De facto'' independent state not recognized by any other state.
|-
|colspan=2|

|-
|valign=top|  Tarnobrzeg – Republic of Tarnobrzeg  
 Unrecognized state.
|-
|colspan=2|

|-
|valign=top|  Transvaal – South African Republic 
|
|-
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|-
|valign=top|  Tripolitania – Tripolitanian Republic  
 Unrecognized state.
|-
|colspan=2|

|-
|valign=top|  Uhtua – Republic of Uhtua  
 Unrecognized state.
|-
|colspan=2|

|-
|valign=top|  Ukraine 
  Ukrainian People's Republic of Soviets  
  Ukrainian People's Republic  
  Ukrainian State  
  West Ukrainian People's Republic  
|-
|colspan=2|

|-
|valign=top|  United Baltic Duchy  
|-
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|-
|valign=top| Western Thrace – Independent Government of Western Thrace  
 Unrecognized state.
|-
|colspan=2|

 Würzburg – Würzburg Soviet Republic (from April 7 to 9, 1919) 
|-
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 Zakopane – Republic of Zakopane (from October 13 to November 16, 1918)

Notes

References

1910s
Lists of countries in the 20th century