| Nation
|
Party
|
|---|
| Afghanistan
|
Afghan Social Democratic Party
|
| Albania
|
Social Democratic Party (Albania)
|
| Andorra
|
Social Democratic Party (Andorra)
|
| Austria
|
Social Democratic Party of Austria
|
| Bosnia-Herzegovina
|
Social Democratic Party of Bosnia and Herzegovina
|
| Brazil
|
Brazilian Social Democracy Party
|
| Central African Republic
|
Social Democratic Party (Central African Republic)
|
| Croatia
|
Social Democratic Party of Croatia
|
| Czech Republic
|
Czech Social Democratic Party
|
| Denmark
|
Socialdemokratiet
|
| East Timor
|
Social Democratic Party (East Timor)
|
| El Salvador
|
Social Democratic Party (El Salvador)
|
| Estonia
|
Social Democratic Party (Estonia)
|
| Ethiopia
|
Ethiopian Social Democratic Federal Party
|
| Faroe Islands
|
Social Democratic Party (Faroe Islands)
|
| Finland
|
Social Democratic Party of Finland
|
| Gabon
|
Social Democratic Party (Gabon)
|
| Germany
|
Social Democratic Party of Germany
|
| Gibraltar
|
Gibraltar Social-Democrats
|
| Guinea-Bissau
|
United Social Democratic Party
|
| Guyana
|
Working People's Alliance
|
| Honduras
|
Social Democratic Party (Honduras)
|
| Iceland
|
Social Democratic Party (Iceland) Alliance (Iceland) (Social Democratic Alliance)
|
| Japan
|
Social Democratic Party (Japan)
|
| North Korea
|
Korean Social Democratic Party
|
| Latvia
|
Latvian Social Democratic Workers' Party
|
| Lithuania
|
Social Democratic Party of Lithuania
|
| Malaysia
|
Social Democratic Party (Malaysia) (defunct)
|
| Mauritius
|
Mauritian Social Democrat Party
|
| Montenegro
|
Social Democratic Party of Montenegro
|
| New Zealand
|
Social Democratic Party (New Zealand)
|
| Nicaragua
|
Social Democratic Party (Nicaragua)
|
| Nigeria
|
Social Democratic Party (Nigeria)
|
| Poland
|
Social Democratic Party of Poland
|
| Portugal
|
Partido Social Democrata
|
| Romania
|
Partidul Social Democrat
|
| Russia
|
Russian Social Democratic Labour Party with its Bolshevik and Menshevik factions Social Democratic Party of Russia (2001)
|
| Rwanda
|
Social Democratic Party (Rwanda)
|
| Serbia
|
Social Democratic Party (Serbia)
|
| Sweden
|
Swedish Social Democratic Party
|
| Switzerland
|
Social Democratic Party of Switzerland
|
| Tajikistan
|
Social Democratic Party (Tajikistan)
|
| Tunisia
|
Movement of Social Democrats
|
| Ukraine
|
United Social Democratic Party of Ukraine
|
| United Kingdom
|
Social Democratic Party (UK) (1981-88) - The original and most prominent incarnation of the SDP Social Democratic Party (UK, 1988) (1988-90) - Continuation by members who had opposed 1988 merger with the Liberal Party Social Democratic Party (UK, 1990) (1990-present) - Continuation of 1988 SDP by members opposed to dissolution Social Democratic Federation - 19th Century political party Social Democratic Party (UK, 1979-82) - Minor party Social Democratic and Labour Party (1970-present) - stands candidates in Northern Ireland but loosely aligned with the Labour Party
|
| United States
|
Social Democratic Party (United States), 1898 - 1901. Predecessor to the Socialist Party of America Social Democratic Federation (US) (1935 - 1956) Social Democratic Party of Pennsylvania
Social Democratic Party of Virginia
|
| Uzbekistan
|
Adolat Social Democratic Party
|
| Zambia
|
Social Democratic Party (Zambia)
|