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:Socialist International

{{About|the modern alliance of social democratic political parties|the historic alliance of left-wing and socialist parties|Second International}}{{Short description|Political international}}

{{use dmy dates|date=January 2023}}

{{Infobox organization

| name = Socialist International

| image = Red Rose (Socialism).svg

| image_border =

| size = 100px

| alt =

| caption = Socialist International logo

| map = Parties of Socialist International.svg

| malt =

| mcaption = Light red: Countries with a political party affiliated with the Socialist International
Dark red: Countries with the ruling party affiliated with the Socialist International

| map2 =

| abbreviation = SI

| motto =

| predecessor = Labour and Socialist International

| successor =

| formation = {{start date and age|df=yes|1951|06|03}}

| extinction =

| type = International non-governmental organization

| status =

| purpose = "Strengthen relations between the affiliated parties and to coordinate their political attitudes and activities"{{cite web|title=Statutes of the Socialist International|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=27|publisher=Socialist International}}

| headquarters =

| location = London, {{postcode|SW|4}}
United Kingdom

| coords =

| region_served = Worldwide

| membership = 119 political parties and 13 affiliated organizations

| language =

| leader_title = President

| leader_name = Pedro Sánchez

| leader_title2 = Vice-President

| leader_name2 = Temirlan Sultanbekov

| leader_title3 = Secretary General

| leader_name3 = Benedicta Lasi

| leader_title4 =

| leader_name4 =

| leader_title5 =

| leader_name5 =

| key_people =

| main_organ = Congress of the Socialist International

| parent_organization =

| affiliations =

| budget = £1.4 million {{small|(2014)}}{{cite web|title=Finances of the International|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=2134|publisher=Socialist International}}

| num_staff =

| num_volunteers =

| website = [https://www.socialistinternational.org/ socialistinternational.org]

| remarks =

| former name =

| secessions = Progressive Alliance

}}

{{Socialism sidebar|orgs}}

{{Social democracy sidebar|orgs}}

The Socialist International (SI) is a political international or worldwide organisation of political parties which seek to establish democratic socialism, consisting mostly of social democratic political parties and labour organisations.

Although formed in 1951 as a successor to the Labour and Socialist International, it has antecedents in the late 19th century. The organisation currently includes 132 member parties{{cite web|title=About Us|url=http://www.socialistinternational.org/about.cfm|publisher=Socialist International}} and organisations from over 100 countries. Its members have governed in many countries, including most of Europe. In 2013, a schism in the SI led to the establishment of the Progressive Alliance.{{cite book|author=Nathan Gilbert Quimpo|chapter=The Post-war Rise and Decline of the Left|editor1= Toby Carroll|editor2=Shahar Hameiri|editor3=Lee Jones|title=The Political Economy of Southeast Asia: Politics and Uneven Development Under Hyperglobalisation|chapter-url=https://books.google.com/books?id=B1TUDwAAQBAJ&pg=PA150|year=2020|publisher= Springer Nature|isbn=978-3-03-028255-4|page=150}}

The current secretary general of the SI is Benedicta Lasi of Ghana, the current president is the prime minister of Spain, Pedro Sánchez, and the current vice-president is Temirlan Sultanbekov of Kyrgyzstan,{{cite web|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=11|title=Presidium|publisher=Socialist International}} all of whom were elected at the last SI Congress held in Madrid, Spain, in November 2022.

History

=First and Second Internationals (1864–1916)=

The International Workingmen's Association, also known as the First International, was the first international body to bring together organisations representing the working class.{{sfn|Lamb|Docherty|2006|p=176}} It was formed in London on 28 September 1864 by socialist, communist and anarchist political groups and trade unions.{{sfn|Lamb|Docherty|2006|p=xxiv}} Tensions between moderates and revolutionaries led to its dissolution in 1876 in Philadelphia.{{sfn|Lamb|Docherty|2006|p=xxv}}

The Second International was formed in Paris on 14 July 1889 as an association of the socialist parties.{{sfn|Lamb|Docherty|2006|p=302}} Differences over World War I led to the Second International being dissolved in 1916.

=Labour and Socialist International (1919–1940)=

The International Socialist Commission (ISC), also known as the Berne International, was formed in February 1919 at a meeting in Bern by parties that wanted to resurrect the Second International.{{sfn|Lamb|Docherty|2006|p=52}} In March 1919, Communist parties formed the Communist International ("Comintern"), the Third International, at a meeting in Moscow.{{sfn|Lamb|Docherty|2006|p=77}}

Some parties did not want to be a part of the resurrected Second International (ISC) or Comintern. They formed the International Working Union of Socialist Parties (IWUSP, also known as Vienna International, Vienna Union, or Two-and-a-Half International) on 27 February 1921 at a conference in Vienna.{{sfn|Lamb|Docherty|2006|p=177}} The ISC and the IWUSP joined to form the Labour and Socialist International (LSI) in May 1923 at a meeting in Hamburg.{{sfn|Lamb|Docherty|2006|p=197}} The rise of Nazism and the start of World War II led to the dissolution of the LSI in 1940.

=Socialist International (1951–present)=

The Socialist International was formed in Frankfurt in July 1951 as a successor to the LSI.{{sfn|Lamb|Docherty|2006|p=320}}

During the post-World War II period, the SI aided social democratic parties in re-establishing themselves when dictatorship gave way to democracy in Portugal (1974) and Spain (1975). Until its 1976 Geneva Congress, the SI had few members outside Europe and no formal involvement with Latin America.The Dictionary of Contemporary Politics of South America, Routledge, 1989 In the 1980s, most SI parties gave their backing to the Nicaraguan Sandinistas (FSLN), whose democratically elected left-wing government was subject to a campaign to overthrow it backed by the United States, which culminated in the Iran–Contra affair after the Reagan administration covertly continued US support for the Contras after such support was banned by Congress.

File:WillyBrandtBerntCarlssonPenttiVäänänen.jpg with outgoing secretary general Bernt Carlsson (left) and new secretary general Pentti Väänänen (right) at the Socialist International Congress in 1983]]

In the late 1970s and in the 1980s the SI had extensive contacts and discussion with the two leading powers of the Cold War period, the United States and the Soviet Union, on issues concerning East–West relations and arms control. The SI supported détente and disarmament agreements, such as SALT II, START and INF. They had several meetings and discussion in Washington, D.C., with President Jimmy Carter and Vice President George Bush and in Moscow with Secretaries General Leonid Brezhnev and Mikhail Gorbachev. The SI's delegations to these discussions were led by the Finnish Prime Minister Kalevi Sorsa.{{cite book|last=Väänänen|first=Pentti|year=2012|title=Purppuraruusu ja samettinyrkki|edition=1st|language=fi|publisher=Kellastupa|pages=192–194|isbn=9789525787115}}

Since then, the SI has admitted as members an increasing number of parties and organisations from Africa, Asia, Europe, and Latin America (see below for current list).

Following the Tunisian Revolution, the Constitutional Democratic Rally was expelled from the SI in January 2011; later that month the Egyptian National Democratic Party was also expelled;{{Cite news|url=https://foreignpolicy.com/2011/02/03/socialist-international-finally-kicks-out-mubarak/|title=Socialist International finally kicks out Mubarak|journal=Foreign Policy|language=en|date=3 February 2011|access-date=31 December 2022}} and as a result of the 2010–2011 Ivorian crisis, the Ivorian Popular Front was expelled in March 2011, in accordance with section 7.1 of the statutes of the Socialist International. These decisions were approved at the subsequent SI Congress in Cape Town in 2012 in line with section 5.1.3 of the statutes.{{Cite web|url=https://www.socialistinternational.org/about-us/statutes/|title=Statutes|website=Socialist International|language=en|access-date=3 May 2019}} These were long term ruling parties of one-party states that were overthrown in the protests of the Arab Spring.

=Progressive Alliance split (2013)=

On 22 May 2013 the Social Democratic Party of Germany along with some other current and former member parties of the SI founded a rival international network of social-democratic parties known as the Progressive Alliance, citing the perceived undemocratic and outmoded nature of the SI,[http://www.sueddeutsche.de/politik/streit-zwischen-spd-und-sozialistischer-internationale-bruderzwist-unter-sozialisten-1.1678352 Bruderzwist unter Sozialisten - Politik - Süddeutsche.de]. Sueddeutsche.de. Retrieved on 15 July 2013.[http://www.spiegel.de/politik/deutschland/progressive-alliance-sozialdemokraten-gruenden-weltweites-netzwerk-a-901352.html Progressive Alliance: Sozialdemokraten gründen weltweites Netzwerk - SPIEGEL ONLINE]. Spiegel.de (22 May 2013). Retrieved on 15 July 2013.[https://www.faz.net/aktuell/politik/sozialdemokratie-progressive-alliance-gegruendet-12191286.html Sozialdemokratie: „Progressive Alliance“ gegründet - Politik]. FAZ. Retrieved on 15 July 2013.{{in lang|de}} [http://www.n-tv.de/politik/SPD-gruendet-Progressive-Alliance-article10689571.html Sozialistische Internationale hat ausgedient: SPD gründet "Progressive Alliance"]. n-tv.de. Retrieved on 15 July 2013. as well as the Socialist International's admittance and continuing inclusion of undemocratic political movements into the organization. For example, the SPD objected to the continued presence of the Sandinista National Liberation Front and the delayed ouster of the Tunisian Democratic Constitutional Rally and Egyptian National Democratic Party.{{Cite news|url=http://www.spiegel.de/spiegel/vorab/a-810543.html |title=SPD will Sozialistischer Internationale den Geldhahn zudrehen und den Mitgliedsbeitrag nicht zahlen – SPIEGEL ONLINE|journal=Der Spiegel|date=22 January 2012|access-date=23 May 2013}}{{cite web |author=Sigmar Gabriel |date=3 February 2011 |title=Gastbeitrag: Keine Kumpanei mit Despoten | Meinung – Frankfurter Rundschau |url=http://www.fr-online.de/meinung/keine-kumpanei-mit-despoten,1472602,7705378.html |url-status=dead |archive-url=https://web.archive.org/web/20150924133228/http://www.fr-online.de/meinung/gastbeitrag-keine-kumpanei-mit-despoten,1472602,7705378.html |archive-date=2015-09-24 |access-date=23 May 2013 |publisher=Fr-online.de |language=de}}

After the 2012 Congress, the SI underwent major changes as many of the large European parties allowed their membership to lapse – for example the Social Democratic Party of Germany (SPD) and the Swedish Social Democratic Party – or downgraded their membership to observer status – for example, the British Labour Party and the Norwegian Labour Party (DNA). These parties now concentrate their international links on the Progressive Alliance, with the SI's focus now increasingly being on the global south.

=Relationship with Latin America=

For a long time, the Socialist International remained distant from Latin America, considering the region as a zone of influence of the United States. For example, it did not denounce the coup d'état against Socialist President Jacobo Árbenz in Guatemala in 1954 or the invasion of the Dominican Republic by the United States in 1965. It was not until the 1973 Chilean coup d'état that "a world we did not know" was discovered, explained Antoine Blanca, a diplomat for the French Socialist Party. According to him, solidarity with the Chilean left was "the first challenge worthy of the name, against Washington, of an International which, until then, had done everything to appear subject to American strategy and NATO". Subsequently, notably under the leadership of François Mitterrand, the SI supported the Sandinistas in Nicaragua and other movements in El Salvador, Guatemala, and Honduras in their struggle against US-supported dictatorships.{{Cite book|title=Les enfants cachés du Général Pinochet. Précis de Coups d'État Modernes et autres tentatives de déstabilisation|publisher=Éditions Don Quichotte|year=2015|pages=613–614}}

In the 1990s, it was joined by non-socialist parties that took note of the economic power of the European countries governed or to be governed by their partners across the Atlantic and calculated the benefits they could derive from it.{{citation needed|date=April 2020}} During this period, "the Socialist International works in a clientist way; some parties come here to rub shoulders with Europeans as if they were in the upper class," says Porfirio Muñoz Ledo, one of the representatives of the Party of the Democratic Revolution (Mexico) at the SI. It is home to "the very centrist Argentinean Radical Civic Union (UCR); the Mexican Institutional Revolutionary Party (PRI), which was not very democratically in power for seventy years; the Colombian Liberal Party—under whose governments the left-wing formation Patriotic Union (1986–1990) was exterminated—introduced the neoliberal model (1990–1994) and to which, until 2002, Álvaro Uribe will belong". In the following decade, many left-wing parties that came to power (in Brazil, Venezuela, Bolivia, Ecuador and El Salvador) preferred to keep their distance from the SI.

Logo

The logo is the fist and rose, based on the 1977 design by José María Cruz Novillo for the Spanish Socialist Workers' Party, itself a variant of the logo drawn by Marc Bonnet for the French Socialist Party in 1969. Variants of the emblem are or were used by several SI member parties.{{cite news |title=Cruz Novillo JR: "Sería bueno que el PSOE entendiera el valor de preservar el patrimonio de su logo" |url=https://graffica.info/cruz-novillo-jr-seria-bueno-que-el-psoe-entendiera-el-valor-de-preservar-el-patrimonio-de-su-logo/ |access-date=19 September 2022 |work=Gràffica |date=7 September 2022 |language=es}}

Presidents, honorary presidents and secretaries general

=Presidents=

  • {{as of|2025}}, there have been a total of 9 Socialist International presidents.

class="wikitable" style="text-align:center;"
scope=col rowspan=2| {{abbr|No.|Number}}

! scope=col rowspan=2| Portrait

! scope=col rowspan=2| Name
{{small|(born–died)}}

! scope=col colspan=3| Term of office

! scope=col colspan=2 rowspan=2| Political party

! scope=col rowspan=2| Congress(es)

! scope=col rowspan=2| Country

! scope=col colspan=2| Vice-president

scope=col| Took office

! scope=col| Left office

! scope=col| Time in office

! scope=col | Name

! scope=col | Country

scope=row | 1

| 80px

| Morgan Phillips
{{small|(1902–1963)}}

| 3 July 1951

| 6 July 1957

| {{ayd|1951|07|03|1957|07|06}}

! style="background:{{party color|Labour Party (UK)}};" |

| Labour Party

| I–IV

| {{Flag|United Kingdom}}

|

|

scope=row | 2

| 80px

| Alsing Andersen
{{small|(1893–1962)}}

| 6 July 1957

| 9 September 1963

| {{ayd|1957|07|06|1963|09|09}}

! style="background:{{party color|Social Democrats (Denmark)}};" |

| Social Democratic Party of Denmark

| V–VII

| {{Flag|Denmark}}

|

|

scope=row | 3

| 80px

| Erich Ollenhauer
{{small|(1901–1963)}}

| 9 September 1963

| 14 December 1963 †

| {{ayd|1963|09|09|1963|12|14}}

! style="background:{{party color|Social Democratic Party of Germany}};" |

| Social Democratic Party of Germany

| VIII

| {{Flag|West Germany}}

|

|

scope=row | 4

| 80px

| Bruno Pittermann
{{small|(1905–1983)}}

| 5 September 1964

| 26 November 1976

| {{ayd|1964|09|05|1976|11|26}}

! style="background:{{party color|Social Democratic Party of Austria}};" |

| Socialist Party of Austria

| IX–XII

| {{Flag|Austria}}

|

|

scope=row | 5

| 80px

| Willy Brandt
{{small|(1913–1992)}}

| 26 November 1976

| 17 September 1992

| {{ayd|1976|11|26|1992|9|17}}

! style="background:{{party color|Social Democratic Party of Germany}};" |

| Social Democratic Party of Germany

| XIII–XVIII

| {{Flag|West Germany}}

|

|

scope=row | 6

| 80px

| Pierre Mauroy
{{small|(1928–2013)}}

| 17 September 1992

| 10 November 1999

| {{ayd|1992|9|17|1999|11|10}}

! style="background:{{party color|Socialist Party (France)}};" |

| Socialist Party

| XIX–XX

| {{Flag|France}}

|

|

scope=row | 7

| 80px

| António Guterres
{{small|({{Abbr|b.|born in}} 1949)}}

| 10 November 1999

| 15 June 2005

| {{ayd|1999|11|10|2005|6|15}}

! style="background:{{party color|Socialist Party (Portugal)}};" |

| Socialist Party

| XXI–XXII

| {{Flag|Portugal}}

|

|

rowspan=2 scope=row | 8

| rowspan=2| 80px

| rowspan=2| George Papandreou
{{small|({{Abbr|b.|born in}} 1952)}}

| rowspan=2| 30 January 2006

| rowspan=2| 25 November 2022

| rowspan=2| {{ayd|2006|1|30|2022|11|26}}

! style="background:{{party color|PASOK}};" |

| Panhellenic Socialist Movement

| rowspan=2| XXII–XXV

| rowspan=2| {{Flag|Greece}}

| rowspan=2|

| rowspan=2|

style="background:{{party color|Movement of Democratic Socialists}};" |

| Movement of Democratic Socialists

scope=row | 9

| 80px

| Pedro Sánchez
{{small|({{Abbr|b.|born in}} 1972)}}

| 25 November 2022

| Incumbent

| {{ayd|2022|11|26}}

! style="background:{{party color|Spanish Socialist Workers' Party}};" |

| Spanish Socialist Workers' Party

| XXVI

| {{Flag|Spain}}

| Temirlan Sultanbekov

| {{Flag|Kyrgyzstan}}

=Honorary presidents=

Current and honorary presidents include:{{cite web|title=Honorary Presidents of the Socialist International|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=1951|publisher=Socialist International}}

=Secretaries general=

File:ZarembaMS.jpg

Summits

Members

=Full members=

There are 92 full members:{{cite web|title=Member Parties|url=http://www.socialistinternational.org/viewArticle.cfm?ArticlePageID=931|publisher=Socialist International}}{{cite web|title=Social Democratic Parties|url=http://www.broadleft.org/socdem.htm|publisher=Broad Left|date=1 June 2005|access-date=14 July 2012|archive-date=30 May 2013|archive-url=https://web.archive.org/web/20130530221635/http://www.broadleft.org/socdem.htm|url-status=dead}}

class="wikitable sortable" style="text-align:left; font-size:95%"
style="background:#d82628; color:#fff;"|Country

! style="background:#d82628; color:#fff;"|Name

! style="background:#d82628; color:#fff;"|Abbr

! style="background:#d82628; color:#fff;"|Government

! style="background:#d82628; color:#fff; width:750px;"|Notes

! style="background:#d82628; color:#fff;"|Lower House

! style="background:#d82628; color:#fff;"|Upper House

| {{ALB}}Socialist Party of Albania{{cite web|title=Key Political Parties in Albania|date=27 September 2010|url=http://www.balkaninsight.com/en/article/who-is-who-political-parties-in-albania|publisher=Balkan Insight}}{{cite web|title=Albania|url=http://www.europeanforum.net/country/albania|publisher=European Forum for Democracy and Solidarity|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120805233955/http://www.europeanforum.net/country/albania|archive-date=5 August 2012|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=323}}PS{{yes2}} in governmentAdmitted as consultative member in 1999.{{cite web|title=XXI Congress of the Socialist International, Paris - Decisions of the Congress Regarding Membership|url=http://www.socialistinternational.org/viewArticle.cfm?ArticlePageID=59|publisher=Socialist International}}{{sfn|Lamb|Docherty|2006|p=323}} Promoted to full member in 2003.{{cite web|title=XXII Congress of the Socialist International, São Paulo - Decisions of the Congress Regarding Membership|url=http://www.socialistinternational.org/viewArticle.cfm?ArticlePageID=66|publisher=Socialist International}}

| colspan="2" |{{Composition bar|74|140|{{party color|Socialist Party of Albania}}|per=1}}

| {{ALG}}Socialist Forces Front{{cite web|title=FFS (Socialist Forces Front)|url=http://www.medea.be/en/countries/algeria/ffs-socialist-forces-front/|publisher=European Institute for Research on Euro-Arab Co-operation|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120510011449/http://www.medea.be/en/countries/algeria/ffs-socialist-forces-front/|archive-date=10 May 2012|url-status=dead}}{{cite web|title=Algeria|url=http://www.europeanforum.net/country/algeria|publisher=European Forum for Democracy and Solidarity|url-status=dead|archive-url=https://web.archive.org/web/20140124224939/http://www.europeanforum.net/country/algeria|archive-date=24 January 2014}}{{sfn|Lamb|Docherty|2006|p=319}}FFS{{no2}} in oppositionAdmitted as consultative member in 1992.{{cite web|title=XIX Congress of the Socialist International, Berlin - Decisions on Membership of the Socialist International|url=http://www.socialistinternational.org/viewArticle.cfm?ArticlePageID=16|publisher=Socialist International}} Promoted to full member in 1996.{{cite web|title=XX Congress of the Socialist International, New York - Congress Decisions Regarding Membership|url=http://www.socialistinternational.org/viewArticle.cfm?ArticlePageID=54|publisher=Socialist International}}{{sfn|Lamb|Docherty|2006|p=319}}

|{{Composition bar|0|407|{{party color|Socialist Forces Front}}|per=1}}

|{{Composition bar|4|144|{{party color|Socialist Forces Front}}|per=1}}

| {{AND}}Social Democratic Party{{cite web|title=Benvinguts|url=http://www.partitsocialdemocrata.com/?page_id=8|publisher=Social Democratic Party (Andorra)|language=ca|access-date=14 July 2012|archive-date=24 September 2015|archive-url=https://web.archive.org/web/20150924064702/http://www.partitsocialdemocrata.com/?page_id=8|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=311}}PS{{no2}} in oppositionPromoted to full member in 2003.{{sfn|Lamb|Docherty|2006|p=311}}

| colspan="2" |{{Composition bar|3|28|{{party color|Social Democratic Party (Andorra)}}|per=1}}

| {{AGO}}Popular Movement for the Liberation of Angola{{sfn|Lamb|Docherty|2006|p=270}}MPLA{{yes2}} in governmentAdmitted as observer member in 1996. Promoted to full member in 2003.{{sfn|Lamb|Docherty|2006|p=270}}

| colspan="2" |{{Composition bar|124|220|{{party color|MPLA}}|per=1}}

| {{ARG}}Radical Civic Union{{sfn|Lamb|Docherty|2006|p=286}}UCR{{no2}} in oppositionAdmitted as consultative member in 1996. Promoted to full member in 1999.{{sfn|Lamb|Docherty|2006|p=286}}

|{{Composition bar|34|257|{{party color|Radical Civic Union}}|per=1}}

|{{Composition bar|13|72|{{party color|Radical Civic Union}}|per=1}}

| {{ARM}}Armenian Revolutionary Federation{{cite web|title=In the Socialist International|url=http://www.arfd.info/the-arf-d-and-the-socialist-international/|publisher=Armenian Revolutionary Federation|date=22 December 2009|access-date=14 July 2012|archive-date=29 August 2018|archive-url=https://web.archive.org/web/20180829092532/http://www.arfd.info/the-arf-d-and-the-socialist-international/|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=37}}ARF{{no2}} in oppositionAdmitted (as Armenian Socialist Party) as observer member in 1996.{{sfn|Lamb|Docherty|2006|p=37}} Promoted (as ASP) to consultative member in 1999. Promoted (as ASP) to full member in 2003.

| colspan="2" |{{Composition bar|10|107|{{party color|Armenian Revolutionary Federation}}|per=1}}

| {{BLR}}Belarusian Social Democratic Party (People's Assembly)BSDP{{no2
} extra-parliamentary || Admitted as observer member in 1999. Promoted to consultative member in 2003. Promoted to full member in November 2015.{{cite web |title=Meeting of the SI Council in Luanda, Angola 27-28 November 2015|url=http://www.socialistinternational.org/councils.cfm|publisher=Socialist International}} Officially deregistered in Belarus since 2005.

|{{Composition bar|0|110|{{party color|Belarusian Social Democratic Party (People's Assembly)}}|per=1}}

|{{Composition bar|0|64|{{party color|Belarusian Social Democratic Party (People's Assembly)}}|per=1}}

|-

|| {{BEL}} || Socialist Party{{cite web|title=L'Action Internationale|url=http://www.ps.be/Pagetype1/PS/Liens-utiles/L-Action-Internationale.aspx|publisher=Socialist Party (Belgium)|language=fr|access-date=14 July 2012|archive-date=7 November 2017|archive-url=https://web.archive.org/web/20171107200010/http://www.ps.be/Pagetype1/PS/Liens-utiles/L-Action-Internationale.aspx|url-status=dead}} || PS || {{no2}} in opposition}} ||

|{{Composition bar|16|150|{{party color|Socialist Party (Belgium)}}|per=1}}

|{{Composition bar|6|60|{{party color|Socialist Party (Belgium)}}|per=1}}

|-

|| {{BOL}} || National Unity Front || UN || {{no2|}} extra-parliamentary || Promoted to full member in March 2017.

|{{Composition bar|0|130|{{party color|National Unity Front}}|per=1}}

|{{Composition bar|0|36|{{party color|National Unity Front}}|per=1}}

|-

|| {{BIH}} || Social Democratic Party of Bosnia and Herzegovina{{cite web|title=Bosnia Herzegovina|url=http://www.europeanforum.net/country/bosnia_herzegovina|publisher=European Forum for Democracy and Solidarity|url-status=dead|archive-url=https://web.archive.org/web/20150909220050/http://www.europeanforum.net/country/bosnia_herzegovina|archive-date=9 September 2015}}{{sfn|Lamb|Docherty|2006|p=311}} || SDP BiH || {{yes2|}} in government || Admitted as observer member in 1996. Promoted to full member in 1999.{{sfn|Lamb|Docherty|2006|p=311}}

|{{Composition bar|6|42|{{party color|Social Democratic Party (Bosnia and Herzegovina)}}|per=1}}

|{{Composition bar|0|15|{{party color|Social Democratic Party (Bosnia and Herzegovina)}}|per=1}}

|-

|| {{BRA}} || Democratic Labour Party{{sfn|Lamb|Docherty|2006|p=101}} || PDT || {{partial|junior party in coalition}}|| Admitted as consultative member in 1986.{{cite web |title=XVII Congress of the Socialist International, Lima - Decisions on Membership of the Socialist International|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=79&ArticlePageID=26&ModuleID=18|publisher=Socialist International}}{{sfn|Lamb|Docherty|2006|p=101}} Promoted to full member in 1989.{{sfn|Lamb|Docherty|2006|p=101}}{{cite web |title=XVIII Congress of the Socialist International, Stockholm - Decisions on Membership of the Socialist International|url=http://www.socialistinternational.org/viewArticle.cfm?ArticlePageID=34|publisher=Socialist International}}

|{{Composition bar|18|513|{{party color|Democratic Labour Party (Brazil)}}|per=1}}

|{{Composition bar|2|81|{{party color|Democratic Labour Party (Brazil)}}|per=1}}

|-

| rowspan="2"| {{BUL}} || Party of Bulgarian Social Democrats{{sfn|Lamb|Docherty|2006|p=67}} || PBSD || {{no2}} extra-parliamentary

|

| colspan="2" |{{Composition bar|0|240|{{party color|Party of Bulgarian Social Democrats}}|per=1}}

|-

| Bulgarian Socialist Party{{sfn|Lamb|Docherty|2006|p=68}} || BSP || {{no2}} in opposition || Admitted as full member in 2003.{{sfn|Lamb|Docherty|2006|p=68}}

| colspan="2" |{{Composition bar|18|240|{{party color|Bulgarian Socialist Party }}|per=1}}

|-

|| {{BFA}} || People's Movement for Progress || MPP || {{no2}} extra-parliamentary || Admitted as full member in 2016.{{cite web |date=18 March 2019 |title=SI Member Parties in Government |url=https://www.socialistinternational.org/news/statements/si-member-parties-in-government-333/ |access-date=9 June 2019 |website=www.socialistinternational.org |publisher=Socialist International}}

| colspan="2" |{{Composition bar|0|127|{{party color|People's Movement for Progress}}|per=1}}

|-

|| {{CMR}} || Social Democratic Front{{sfn|Lamb|Docherty|2006|p=307}} || SDF || {{no2}} in opposition || Admitted as consultative member in 1996. Promoted to full member in 1999.{{sfn|Lamb|Docherty|2006|p=307}}

|{{Composition bar|5|180|{{party color|Social Democratic Front (Cameroon)}}|per=1}}

|{{Composition bar|1|100|{{party color|Social Democratic Front (Cameroon)}}|per=1}}

|-

|| {{CPV}} || African Party for the Independence of Cape Verde{{sfn|Lamb|Docherty|2006|p=25}} || PAICV || {{no2}} in opposition || Admitted as consultative member in 1992. Promoted to full member in 1996.{{sfn|Lamb|Docherty|2006|p=25}}

| colspan="2" |{{Composition bar|30|72|{{party color|African Party for the Independence of Cape Verde}}|per=1}}

|-

|{{CAF}}

|Movement for the Liberation of the Central African People

|MLPC|| {{no2}} in opposition

|Admitted as observer member in 2008. Upgraded to full member in 2018.

| colspan="2" |{{Composition bar|9|100|{{party color|Movement for the Liberation of the Central African People}}|per=1}}

|-

|{{flagcountry|Chad}}

|National Union for Democracy and Renewal

|UNDR|| {{no2}} extra-parliamentary

|Admitted as observer member in June/July 2014. Upgraded to full member in 2017.

| colspan="2" |{{Composition bar|0|155|{{party color|National Union for Democracy and Renewal}}|per=1}}

|-

| rowspan="3"| {{CHL}} || Party for Democracy{{sfn|Lamb|Docherty|2006|p=265}} || PPD || {{partial|junior party in coalition}} || Admitted as consultative member in 1992. Promoted to full member in 1996.{{sfn|Lamb|Docherty|2006|p=265}}

|{{Composition bar|7|155|{{party color|Party for Democracy (Chile)}}|per=1}}

|{{Composition bar|6|50|{{party color|Party for Democracy (Chile)}}|per=1}}

|-

| Radical Party of Chile{{sfn|Lamb|Docherty|2006|p=314}} || PRSD || {{partial|junior party in coalition}} ||

|{{Composition bar|4|155|{{party color|Radical Party of Chile (2018)}}|per=1}}

|{{Composition bar|0|50|{{party color|Radical Party of Chile (2018)}}|per=1}}

|-

| Socialist Party of Chile{{sfn|Lamb|Docherty|2006|p=325}} || PS || {{partial|junior party in coalition}} || Admitted as consultative member in 1992. Promoted to full member in 1996.{{sfn|Lamb|Docherty|2006|p=325}}

|{{Composition bar|13|155|{{party color|Socialist Party of Chile}}|per=1}}

|{{Composition bar|7|50|{{party color|Radical Party of Chile (2018)}}|per=1}}

|-

|| {{COL}} || Colombian Liberal Party{{sfn|Lamb|Docherty|2006|p=211}} || PLC || {{partial|}} junior party in coalition || Admitted as consultative member in 1992. Promoted to full member in 1999.{{sfn|Lamb|Docherty|2006|p=211}}

|{{Composition bar|32|188|{{party color|Colombian Liberal Party}}|per=1}}

|{{Composition bar|14|108|{{party color|Colombian Liberal Party}}|per=1}}

|-

|| {{CRI}} || National Liberation Party{{sfn|Lamb|Docherty|2006|p=245}} || PLN || {{no2}} in opposition || Full member since 1987.{{sfn|Lamb|Docherty|2006|p=245}}

| colspan="2" |{{Composition bar|19|57|{{party color|National Liberation Party (Costa Rica)}}|per=1}}

|-

|| {{CRO}} || Social Democratic Party of Croatia{{cite web|title=Croatia|url=http://www.europeanforum.net/country/croatia|publisher=European Forum for Democracy and Solidarity|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120615140100/http://www.europeanforum.net/country/croatia|archive-date=15 June 2012|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=312}} || SDP || {{no2}} in opposition || Admitted as full member in 1999.{{sfn|Lamb|Docherty|2006|p=312}}

| colspan="2" |{{Composition bar|37|151|{{party color|Social Democratic Party of Croatia}}|per=1}}

|-

|| {{CYP}} || EDEK Socialist Party{{cite web|title=Movement for Social Democracy|url=http://www.edek.org.cy/|publisher=Movement for Social Democracy}}{{sfn|Lamb|Docherty|2006|p=308}} || EDEK || {{partial| junior party in coalition}} || Full member since 1987.{{sfn|Lamb|Docherty|2006|p=308}} Promoted to full member in 1992.

| colspan="2" |{{Composition bar|3|56|{{party color|Movement for Social Democracy}}|per=1}}

|-

| rowspan="2"| {{flagicon|Cyprus}} {{flagicon|TRNC}} Cyprus (North)|| Republican Turkish Party || CTP || {{no2}} in opposition || Admitted as consultative member in 2008 (pending consultation). Promoted to full member in June/July 2014.{{cite web|title=SI Council Meeting in Mexico City|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=2299|publisher=Socialist International}}

| colspan="2" |{{Composition bar|18|50|{{party color|Republican Turkish Party}}|per=1}}

|-

| Communal Democracy Party || TDP || {{no2}} extra-parliamentary || Admitted as consultative member in November 2015. Promoted to full member in March 2017.

| colspan="2" |{{Composition bar|0|50|{{party color|Communal Democracy Party}}|per=1}}

|-

|| {{CZE}} || Social Democracy{{cite web|title=Our Party|url=http://www.cssd.cz/en/our-party/|publisher=Czech Social Democratic Party|url-status=dead|archive-url=https://web.archive.org/web/20120813071430/http://www.cssd.cz/en/our-party/|archive-date=13 August 2012}}{{sfn|Lamb|Docherty|2006|p=95}} || SOCDEM || {{no2|}}in opposition ||

|{{Composition bar|0|200|{{party color|Social Democracy (Czech Republic)}}|per=1}}

|{{Composition bar|1|81|{{party color|Social Democracy (Czech Republic)}}|per=1}}

|-

|{{COD}}

|Union for Democracy and Social Progress

|UDPS|| {{yes2}} in government

|Admitted as observer member in 2003.

|{{Composition bar|32|500|{{party color|Union for Democracy and Social Progress (Democratic Republic of the Congo)}}|per=1}}

|{{Composition bar|0|108|{{party color|Union for Democracy and Social Progress (Democratic Republic of the Congo)}}|per=1}}

|-

|| {{DOM}} || Dominican Revolutionary Party{{sfn|Lamb|Docherty|2006|p=108}} || PRD || {{no2}} in opposition || Full member since 1987.{{sfn|Lamb|Docherty|2006|p=108}}

|{{Composition bar|4|190|{{party color|Dominican Revolutionary Party}}|per=1}}

|{{Composition bar|0|32|{{party color|Dominican Revolutionary Party}}|per=1}}

|-

|| {{EQG}} || Convergence for Social Democracy{{sfn|Lamb|Docherty|2006|p=87}} || CPDS || {{no2}} extra-parliamentary || Admitted as consultative member in 1996. Promoted to full member in 1999.{{sfn|Lamb|Docherty|2006|p=87}}

| colspan="2" |{{Composition bar|0|100|{{party color|Convergence for Social Democracy (Equatorial Guinea)}}|per=1}}

|-

|| {{FIN}} || Social Democratic Party of Finland || SDP || {{no2}} in opposition ||

| colspan="2" |{{Composition bar|43|200|{{party color|Social Democratic Party of Finland}}|per=1}}

|-

|| {{FRA}} || Socialist Party{{cite web|title=L'internationale socialiste|url=http://www.parti-socialiste.fr/le-reseau-ps/internationale-socialiste|publisher=Socialist Party (France)|language=fr|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120608044917/http://www.parti-socialiste.fr/le-reseau-ps/internationale-socialiste|archive-date=8 June 2012|url-status=dead}} || PS || {{no2}} in opposition ||

|{{Composition bar|63|577|{{party color|Socialist Party (France)}}|per=1}}

|{{Composition bar|66|348|{{party color|Socialist Party (France)}}|per=1}}

|-

|| {{GHA}} || National Democratic Congress || NDC || {{Yes}} in government || Admitted as consultative member in 2003. Promoted to full member in 2008.{{cite web |title=XXIII Congress of the Socialist International, Athens - Decisions of the Congress Regarding Membership|url=http://www.socialistinternational.org/viewArticle.cfm?ArticlePageID=1270|publisher=Socialist International}}

| colspan="2" |{{Composition bar|183|276|{{party color|National Democratic Congress (Ghana)}}|per=1}}

|-

|| {{GRE}} || PASOK – Movement for Change || PASOK-KINAL || {{no2}} in opposition || Full member since 1990.{{sfn|Lamb|Docherty|2006|p=262}}

| colspan="2" |{{Composition bar|33|300|{{party color|PASOK – Movement for Change}}|per=1}}

|-

|| {{GUA}} || National Unity of Hope || UNE || {{no2}} in opposition || Admitted as full member in 2008.

| colspan="2" |{{Composition bar|28|160|{{party color|National Unity of Hope}}|per=1}}

|-

|| {{GUI}} || Rally of the Guinean People{{cite web |title=Attack on President Condé an assault on democracy|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=2127|publisher=Socialist International|date=19 July 2011}}{{sfn|Lamb|Docherty|2006|p=148}} || RPG || {{no2}} in opposition || Admitted (as Guinean People's Assembly) as consultative member in 1999. Promoted (as GPA) to full member in 2003.{{sfn|Lamb|Docherty|2006|p=148}}

| colspan="2" |{{Composition bar|1|81|{{party color|Rally of the Guinean People}}|per=1}}

|-

| rowspan="2"| {{HAI}} || Fusion of Haitian Social Democrats{{sfn|Lamb|Docherty|2006|p=351}} || PFSDH || {{no2}} extra-parliamentary || Full member since 1989.{{sfn|Lamb|Docherty|2006|p=351}}

|{{Composition bar|0|119|{{party color|Fusion of Haitian Social Democrats}}|per=1}}

|{{Composition bar|0|30|{{party color|Fusion of Haitian Social Democrats}}|per=1}}

|-

|Social Democratic Assembly for the Progress of Haiti (RSD)

|RSD|| {{no2}} extra-parliamentary

|Admitted as full members in 2018{{Cite web|url=https://www.socialistinternational.org/councils/meeting-of-the-si-council-at-the-united-nations-in-geneva/|title=Meeting of the SI Council at the United Nations in Geneva|website=Socialist International|language=en|access-date=3 May 2019}}

|{{Composition bar|0|119|{{party color|Fusion of Haitian Social Democrats}}|per=1}}

|{{Composition bar|0|30|{{party color|Fusion of Haitian Social Democrats}}|per=1}}

|-

|| {{HUN}} || Hungarian Socialist Party{{cite web|title=A Magyar Szocialista Párt…|url=http://mszp.hu/bemutatkozas|publisher=Hungarian Socialist Party|language=hu|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120630105915/http://mszp.hu/bemutatkozas|archive-date=30 June 2012|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=158}} || MSzP || {{no2}} in opposition || Admitted as observer member in 1992.{{sfn|Lamb|Docherty|2006|p=158}} Promoted to full member in 1996.

| colspan="2" |{{Composition bar|10|199|{{party color|Hungarian Socialist Party}}|per=1}}

|-

|| {{IND}} || Indian National Congress || INC || {{no2}} in opposition || Originally joined in 1993.{{cite book |author=Gabriel Sheffer|title=Innovative Leaders in International Politics|url=https://books.google.com/books?id=__efKLSD3M0C&pg=PA202|access-date=30 January 2013|year=1993|publisher=SUNY Press|isbn=978-0-7914-1520-7|page=202}} Readmitted as full member December 2014.{{cite web|title=Meeting of the SI Council at the United Nations in Geneva|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=2326|publisher=Socialist International}}

|{{Composition bar|99|543|{{party color|Indian National Congress}}|per=1}}

|{{Composition bar|27|245|{{party color|Indian National Congress}}|per=1}}

|-

|| {{IRQ}} || Patriotic Union of Kurdistan || PUK || {{partial|}} junior party in coalition || Admitted as observer member in 2003. Promoted to full member in 2008.

| colspan="2" |{{Composition bar|17|329|{{party color|Patriotic Union of Kurdistan}}|per=1}}

|-

|| {{ITA}} || Italian Socialist Party || PSI || {{no2}} extra-parliamentary ||

|{{Composition bar|0|400|{{party color|Italian Socialist Party (2007)}}|per=1}}

|{{Composition bar|0|200|{{party color|Italian Socialist Party (2007)}}|per=1}}

|-

|| {{JAM}} || People's National Party{{sfn|Lamb|Docherty|2006|p=271}} || PNP || {{no2}} in opposition || Full member since 1952.{{sfn|Lamb|Docherty|2006|p=271}} Temporarily demoted to observer member in 2012 due to non-payment of membership fees.

|{{Composition bar|14|63|{{party color|People's National Party}}|per=1}}

|{{Composition bar|8|21|{{party color|People's National Party}}|per=1}}

|-

|| {{JPN}} || Social Democratic Party{{sfn|Lamb|Docherty|2006|p=186}} || SDP || {{no2}} in opposition || Full member since 1951 as the Japan Socialist Party.{{sfn|Lamb|Docherty|2006|p=186}}

|{{Composition bar|1|465|{{party color|Social Democratic Party (Japan)}}|per=1}}

|{{Composition bar|2|248|{{party color|Social Democratic Party (Japan)}}|per=1}}

|-

|| {{KAZ}} || Nationwide Social Democratic Party || JSDP || {{no2}} in opposition || Admitted as consultative member in 2012. Promoted to full member in November 2015.

| colspan="2" |{{Composition bar|4|98|{{party color|Nationwide Social Democratic Party}}|per=1}}

|-

|| {{flag|Kyrgyzstan}} || Social Democrats|| SDK || {{no2}} in opposition || Legal successor to the Social Democratic Party of Kyrgyzstan.

| colspan="2" |{{Composition bar|1|90|{{party color|Social Democrats (Kyrgyzstan)}}|per=1}}

|-

|| {{LBN}} || Progressive Socialist Party{{sfn|Lamb|Docherty|2006|p=283}}|| PSP || {{no2}} in opposition || Full member since 1980.{{sfn|Lamb|Docherty|2006|p=283}}

| colspan="2" |{{Composition bar|8|128|{{party color|Progressive Socialist Party}}|per=1}}

|-

|| {{LTU}} || Social Democratic Party of Lithuania{{sfn|Lamb|Docherty|2006|p=214}}|| LSDP || {{yes2|}} in government || Full member since the 1990s.{{sfn|Lamb|Docherty|2006|p=214}}

| colspan="2" |{{Composition bar|52|141|{{party color|Social Democratic Party of Lithuania}}|per=1}}

|-

|{{LUX}}

|Luxembourg Socialist Workers' Party{{cite web|url=http://www.lsap.lu/lsap_Lsap-aujourdhui.124-2.html|title=LSAP aujourd'hui|publisher=Luxembourg Socialist Workers' Party|language=fr|archive-url=https://web.archive.org/web/20131014013849/http://www.lsap.lu/lsap_Lsap-aujourdhui.124-2.html|archive-date=14 October 2013|url-status=dead|access-date=14 July 2012}}{{sfn|Lamb|Docherty|2006|p=217}}

|| LSAP/POSL|| {{partial|}} in opposition || Full member since 1951.{{sfn|Lamb|Docherty|2006|p=217}}

| colspan="2" |{{Composition bar|11|60|{{party color|Luxembourg Socialist Workers' Party}}|per=1}}

|-

| rowspan="2" | {{MLI}} || Alliance for Democracy in Mali{{sfn|Lamb|Docherty|2006|p=29}} || ADEMA-PASJ || {{no2|}} in opposition || Admitted as consultative member in 1996. Promoted to full member in 1999.{{sfn|Lamb|Docherty|2006|p=29}} Promoted to full member in 2008. Status unclear following the 2020 Malian coup d'état.

| colspan="2" |{{Composition bar|24|147|{{party color|Alliance for Democracy in Mali}}|per=1}}

|-

| Rally for Mali|| RPM || {{no2|}} in opposition || Admitted as consultative member in 2003. Status unclear following the 2020 Malian coup d'état.

| colspan="2" |{{Composition bar|51|147|{{party color|Rally for Mali}}|per=1}}

|-

|| {{MLT}}||Labour Party{{sfn|Lamb|Docherty|2006|p=220}}|| PL || {{yes2}} in government || Full member since 1955, leading to the entire party being interdicted by the Catholic Church in 1961.{{sfn|Lamb|Docherty|2006|p=220}}{{Cite web |last=Grech |first=Sergio |title=Contextualising the 1961 Interdict in Malta |url=https://www.um.edu.mt/library/oar/handle/123456789/105008 |url-status=live |website=OAR@UM}} Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014. Rejoined in 2025.{{cite web |last=Sansone |first=Kurt |title=Labour Party re-joins Socialist International once snubbed by Joseph Muscat |url=https://www.maltatoday.com.mt/news/national/132984/labour_party_rejoins_socialist_international_once_snubbed_by_joseph_muscat |url-status=live |website=MaltaToday}}

| colspan="2" |{{Composition bar|43|79|{{party color|Labour Party (Malta)}}|per=1}}

|-

|| {{MRT}} || Rally of Democratic Forces|| RFD || {{no2}} extra-parliamentary || Admitted as observer member in 2003. Promoted to full member in 2008.

| colspan="2" |{{Composition bar|0|176|{{party color|Rally of Democratic Forces}}|per=1}}

|-

| rowspan="2" | {{MUS}} || Labour Party{{sfn|Lamb|Docherty|2006|p=230}}|| PTR || {{yes2}} in government || Full member since 1969.{{sfn|Lamb|Docherty|2006|p=230}}

| colspan="2" |{{Composition bar|35|66|{{party color|Labour Party (Mauritius)}}|per=1}}

|-

| Mauritian Militant Movement{{sfn|Lamb|Docherty|2006|p=229}}|| MMM || {{yes2}} in government || Admitted as consultative member in 1996. Promoted to full member in 2003.{{sfn|Lamb|Docherty|2006|p=229}} Part of the Alliance of the Heart.

| colspan="2" |{{Composition bar|19|66|{{party color|Mauritian Militant Movement}}|per=1}}

|-

|| {{MEX}} || Institutional Revolutionary Party{{sfn|Lamb|Docherty|2006|p=167}}|| PRI || {{no2}} in opposition || Admitted as consultative member in 1996. Promoted to full member in 2003.{{sfn|Lamb|Docherty|2006|p=167}}

|{{Composition bar|68|500|{{party color|Institutional Revolutionary Party}}|per=1}}

|{{Composition bar|13|128|{{party color|Institutional Revolutionary Party}}|per=1}}

|-

|| {{MDA}} || European Social Democratic Party{{cite web|title=Moldova|url=http://www.europeanforum.net/country/moldova|publisher=European Forum for Democracy and Solidarity|url-status=dead|archive-url=https://web.archive.org/web/20150405153134/http://www.europeanforum.net/country/moldova|archive-date=5 April 2015}}|| PSDE || {{no2|}} extra-parliamentary || Admitted as consultative member in 2008. Promoted to full member in 2012.{{cite web |title=XXIV Congress of the Socialist International, Cape Town - Decisions on Membership|url=http://www.socialistinternational.org/viewArticle.cfm?ArticlePageID=1697|publisher=Socialist International}}
Part of Alliance for European Integration.

| colspan="2" |{{Composition bar|0|101|{{party color|European Social Democratic Party}}|per=1}}

|-

|| {{MNG}} || Mongolian People's Party{{cite web|title=Party History|url=http://mpp.mn/en/page/detail/name/Party+History|publisher=Mongolian People's Party|access-date=14 July 2012|archive-date=8 September 2018|archive-url=https://web.archive.org/web/20180908015807/http://mpp.mn/en/page/detail/name/Party+History|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=238}}|| MPP || {{yes2}} in government || Admitted (as Mongolian People's Revolutionary Party) as observer member in 1999.{{sfn|Lamb|Docherty|2006|p=238}}
Promoted (as Mongolian People's Revolutionary Party) to full member in 2003.{{sfn|Lamb|Docherty|2006|p=238}}

| colspan="2" |{{Composition bar|68|126|{{party color|Mongolian People's Party}}|per=1}}

|-

| rowspan="2" | {{MNE}} || Democratic Party of Socialists of Montenegro{{cite web|title=Montenegro|url=http://www.europeanforum.net/country/montenegro|archive-url=https://web.archive.org/web/20050418025741/http://www.europeanforum.net/country/montenegro|url-status=dead|archive-date=18 April 2005|publisher=European Forum for Democracy and Solidarity}}|| DPS || {{no2}} in opposition || Admitted as consultative member in 2003. Promoted to full member in 2008.

| colspan="2" |{{Composition bar|17|81|{{party color|Democratic Party of Socialists of Montenegro}}|per=1}}

|-

| Social Democratic Party of Montenegro{{cite web|title=Socijalistička internacionala |url=http://www.sdp.co.me/SocijalistickaInternacionala|publisher=Social Democratic Party of Montenegro|language=cnr |archive-url=https://web.archive.org/web/20140221171744/http://www.sdp.co.me/SocijalistickaInternacionala |archive-date=21 February 2014}}{{sfn|Lamb|Docherty|2006|p=313}}|| SDP || {{no2}} extra-parliamentary || Admitted as observer member in 1996. Promoted to consultative member in 1999. Promoted to full member in 2003.{{sfn|Lamb|Docherty|2006|p=313}}

| colspan="2" |{{Composition bar|0|81|{{party color|Social Democratic Party of Montenegro}}|per=1}}

|-

|| {{MAR}} || Socialist Union of Popular Forces{{cite web|title=Relations internationales|url=http://www.usfp.ma/international.php|publisher=Socialist Union of Popular Forces|language=fr|access-date=14 July 2012|archive-url=https://web.archive.org/web/20121115110938/http://www.usfp.ma/international.php|archive-date=15 November 2012|url-status=dead}}{{cite web|title=Morocco|url=http://www.europeanforum.net/country/morocco|publisher=European Forum for Democracy and Solidarity|url-status=dead|archive-url=https://web.archive.org/web/20140910053106/http://www.europeanforum.net/country/morocco|archive-date=10 September 2014}}{{sfn|Lamb|Docherty|2006|p=328}}|| USFP || {{no2}} in opposition || Promoted to full member in 1992.

|{{Composition bar|37|395|{{party color|Socialist Union of Popular Forces}}|per=1}}

|{{Composition bar|8|120|{{party color|Socialist Union of Popular Forces}}|per=1}}

|-

|| {{MOZ}} || Frelimo Party{{sfn|Lamb|Docherty|2006|p=132}}|| FRELIMO || {{yes2}} in government || Admitted as consultative member in 1996. Promoted to full member in 1999.

| colspan="2" |{{Composition bar|184|250|{{party color|FRELIMO}}|per=1}}

|-

|| {{NAM}} || South West Africa People's Organisation|| SWAPO || {{yes2}} in government || Promoted to full member in 2008.

|{{Composition bar|63|96|{{party color|SWAPO}}|per=1}}

|{{Composition bar|28|42|{{party color|SWAPO}}|per=1}}

|-

|| {{NEP}} || Nepali Congress{{cite web |title=Introduction|url=http://www.nepalicongress.org/index.php?linkId=2|publisher=Nepali Congress}}{{sfn|Lamb|Docherty|2006|p=250}}|| NC || {{no2}} in coalition || Admitted as consultative member in 1989. Promoted to full member in 1999.{{sfn|Lamb|Docherty|2006|p=250}}

|{{Composition bar|88|275|{{party color|Nepali Congress}}|per=1}}

|{{Composition bar|16|59|{{party color|Nepali Congress}}|per=1}}

|-

|| {{NER}} || Nigerien Party for Democracy and Socialism{{sfn|Lamb|Docherty|2006|p=267}}|| PNDS || {{no2}} in opposition || Admitted as consultative member in 1996. Promoted to full member in 2003.{{sfn|Lamb|Docherty|2006|p=267}} Status unclear following the 2023 Nigerien coup d'état.

| colspan="2" |{{Composition bar|79|171|{{party color|Nigerien Party for Democracy and Socialism}}|per=1}}

|-

|| {{PAK}} || Pakistan Tehreek-e-Insaf{{sfn|Lamb|Docherty|2006|p=267}}|| PTI || {{partial|in opposition}} || Admitted as consultative member in 1982. Promoted to full member in 2018.{{sfn|Lamb|Docherty|2006|p=261}}

|{{Composition bar|10|336|{{party color|Pakistan Tehreek-e-Insaf}}|per=1}}

|{{Composition bar|20|100|{{party color|Pakistan Tehreek-e-Insaf}}|per=1}}

|-

|-

|| {{PRY}} || Progressive Democratic Party|| PDP || {{no2}} extra-parliamentary || Admitted as consultative member in 2008. Promoted to full member in November 2015.

|{{Composition bar|0|80|{{party color|Progressive Democratic Party (Paraguay)}}|per=1}}

|{{Composition bar|0|45|{{party color|Progressive Democratic Party (Paraguay)}}|per=1}}

|-

|| {{PER}} || Peruvian Aprista Party{{sfn|Lamb|Docherty|2006|p=273}}|| PAP || {{no2}} extra-parliamentary || Promoted to full member in 1999.

| colspan="2" |{{Composition bar|0|130|{{party color|American Popular Revolutionary Alliance}}|per=1}}

|-

|{{PHL}}

|Philippine Democratic Socialist Party

|PDSP|| {{no2}} extra-parliamentary

|Admitted as consultative member in 1992. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014. Reinstated in 2019.

|{{Composition bar|0|316|{{party color|Partido Demokratiko Sosyalista ng Pilipinas}}|per=1}}

|{{Composition bar|0|24|{{party color|Partido Demokratiko Sosyalista ng Pilipinas}}|per=1}}

|-

|| {{PRT}} || Socialist Party{{sfn|Lamb|Docherty|2006|p=280}} || PS || {{no2}} in opposition ||

| colspan="2" |{{Composition bar|78|230|{{party color|Socialist Party (Portugal)}}|per=1}}

|-

|| {{PUR}} || Puerto Rican Independence Party{{sfn|Lamb|Docherty|2006|p=285}}|| PIP || {{no2}} in opposition || Consultative member in 1987, full member in 1994.{{sfn|Lamb|Docherty|2006|p=285}} Promoted to full member in 1992.

|{{Composition bar|1|51|{{party color|Puerto Rican Independence Party}}|per=1}}

|{{Composition bar|1|27|{{party color|Puerto Rican Independence Party}}|per=1}}

|-

|| {{ROU}} || Social Democratic Party{{cite web|title=Afiliere internationala|url=http://www.psd.ro/noulpsd/afiliere-internationala|archive-url=https://archive.today/20130416112206/http://www.psd.ro/noulpsd/afiliere-internationala|url-status=dead|archive-date=16 April 2013|publisher=Social Democratic Party (Romania)|language=ro}}{{sfn|Lamb|Docherty|2006|p=293}}|| PSD || {{yes2}} in government || Admitted as consultative member in 1996. Promoted to full member in 1999. PSDR admitted as consultative member in 1992, full member in 2001.{{sfn|Lamb|Docherty|2006|p=293}} Admitted as full member in 2003. Both parties merged into PSD in 2001.

|{{Composition bar|107|330|{{party color|Social Democratic Party (Romania)}}|per=1}}

|{{Composition bar|49|136|{{party color|Social Democratic Party (Romania)}}|per=1}}

|-

|| {{SMR}} || Party of Socialists and Democrats{{sfn|Lamb|Docherty|2006|p=267}}|| PSD || {{partial|}} junior partner in coalition || Consultative member in 1961, full member in 1980.{{sfn|Lamb|Docherty|2006|p=267}}

| colspan="2" |{{Composition bar|4|60|{{party color|Party of Socialists and Democrats}}|per=1}}

|-

|| {{SEN}} || Socialist Party of Senegal{{cite web|title=Le Parti en bref|url=http://www.ps-senegal.com/historique/le-parti-en-bref|publisher=Socialist Party of Senegal|language=fr|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120424204515/http://www.ps-senegal.com/historique/le-parti-en-bref|archive-date=24 April 2012|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=326}}|| PS || {{partial|}} junior partner in coalition || Full member since the 1970s.{{sfn|Lamb|Docherty|2006|p=326}} Boycotted last election.

| colspan="2" |{{Composition bar|0|150|{{party color|Socialist Party of Senegal}}|per=1}}

|-

|| {{SVK}} || Direction – Social Democracy{{sfn|Lamb|Docherty|2006|p=107}}|| SMER-SD || {{yes2}} in government || Full member.{{sfn|Lamb|Docherty|2006|p=107}}

| colspan="2" |{{Composition bar|42|150|{{party color|Direction – Social Democracy}}|per=1}}

|-

|| {{ZAF}} || African National Congress{{sfn|Lamb|Docherty|2006|p=24}}|| ANC || {{yes2}} in government || Admitted as full member in 1999.{{sfn|Lamb|Docherty|2006|p=24}}

|{{Composition bar|159|400|{{party color|African National Congress}}|per=1}}

|{{Composition bar|43|90|{{party color|African National Congress}}|per=1}}

|-

|| {{ESP}} || Spanish Socialist Workers' Party{{sfn|Lamb|Docherty|2006|p=336}}|| PSOE || {{yes2}} in government || Full member since 1951.{{sfn|Lamb|Docherty|2006|p=336}}

|{{Composition bar|121|350|{{party color|Spanish Socialist Workers' Party}}|per=1}}

|{{Composition bar|88|266|{{party color|Spanish Socialist Workers' Party}}|per=1}}

|-

|| {{TUN}} || Democratic Forum for Labour and Liberties|| FDTL || {{n/a}} || Admitted as consultative member in 2003. Demoted to observer member in 2012 due to non-payment of membership fees. Promoted to full member in 2012. Boycotted the 2022–23 Tunisian parliamentary election.{{Cite web |date=2022-09-19 |title=Tunisie : Une coalition politique annonce son boycott des prochaines législatives |url=https://news.gnet.tn/tunisie-une-nouvelle-coalition-politique-annonce-son-boycott-des-prochaines-legislatives/ |access-date=2023-12-30 |website=Gnet news |language=fr-FR}}

| colspan="2" |{{Composition bar|0|217|{{party color|Democratic Forum for Labour and Liberties}}|per=1}}

|-

|| {{TUR}} || Republican People's Party{{cite web |title=European Union Representation|url=http://chpbrussels.org/|publisher=Republican People's Party}}{{cite web|title=Turkey|url=http://www.europeanforum.net/country/turkey|publisher=European Forum for Democracy and Solidarity|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120728194544/http://www.europeanforum.net/country/turkey|archive-date=28 July 2012|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=289}}|| CHP || {{no2}} in opposition || Took Social Democratic Populist Party's place in 1995.{{sfn|Lamb|Docherty|2006|p=289}}

| colspan="2" |{{Composition bar|134|600|{{party color|Republican People's Party (Turkey)}}|per=1}}

|-

|| {{URY}} || New Space{{cite web|title=Nuevo Espacio|url=http://www.nuevoespacio.org.uy/partido/|publisher=New Space (Uruguay)|language=es|access-date=14 July 2012|archive-url=https://web.archive.org/web/20130729115606/http://www.nuevoespacio.org.uy/partido/|archive-date=29 July 2013|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=253}}|| PNE || {{no2}} in opposition || Admitted as consultative member in 1999. Promoted to full member in 2003.{{sfn|Lamb|Docherty|2006|p=253}}Party does not individually stand in elections but participates as part of the Broad Front.

|-

| rowspan="3" | {{VEN}} || A New Era|| UNT || {{no2}} extra-parliamentary || Admitted as consultative member in 2013.{{cite web|url=http://www.socialistinternational.org/images/dynamicImages/files/Council%20decisions-1.pdf|title=Decisions of the Council|website=socialistinternational.org|access-date=2 March 2020|url-status=dead|archive-url=https://web.archive.org/web/20180907221513/http://www.socialistinternational.org/images/dynamicImages/files/Council%20decisions-1.pdf|archive-date=7 September 2018}} Promoted to full member in November 2015.

| colspan="2" |{{Composition bar|0|277|{{party color|A New Era}}|per=1}}

|-

| Democratic Action{{cite web|title=Propuestas|url=http://acciondemocratica.org.ve/ad/portal/propuestas.php|publisher=Democratic Action|language=es|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120622054842/http://acciondemocratica.org.ve/ad/portal/propuestas.php|archive-date=22 June 2012|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=100}}|| AD || {{no2}} in opposition || Observer member in 1966, consultative member in 1981, full member mid 1980s.{{sfn|Lamb|Docherty|2006|p=100}}

| colspan="2" |{{Composition bar|11|277|{{party color|Democratic Action (Venezuela)}}|per=1}}

|-

| Popular Will|| VP || {{no2}} extra-parliamentary || Admitted as full member in December 2014.

| colspan="2" |{{Composition bar|0|277|{{party color|Popular Will}}|per=1}}

|-

|| {{YEM}} || Yemeni Socialist Party|| YSP || {{no2}} in opposition || Admitted as observer member in 2003. Promoted to consultative member in 2008.
Promoted to full member in 2012.

| colspan="2" |{{Composition bar|8|301|{{party color|Yemeni Socialist Party}}|per=1}}

|}

=Consultative parties=

There are 19 consultative parties:

class="wikitable sortable" style="text-align:left; font-size:95%"
style="background:#d82628; color:#fff;"|Country

! style="background:#d82628; color:#fff;"|Name

! style="background:#d82628; color:#fff;"|Abbr

! style="background:#d82628; color:#fff;"|Government

! style="background:#d82628; color:#fff;"|Notes

! style="background:#d82628; color:#fff;"|Lower House

! style="background:#d82628; color:#fff;"|Upper House

| {{BWA}}Botswana Democratic PartyBDP{{no2}} in opposition Admitted as consultative member in June/July 2014.

| colspan="2" |{{Composition bar|4|61|{{party color|Botswana Democratic Party}}|per=1}}

{{COD}}

|Unified Lumumbist Party

|PALU

{{no2}} in opposition

|Admitted as observer member in December 2014. Upgraded to consultative in 2019.

|{{Composition bar|17|500|{{party color|Unified Lumumbist Party}}|per=1}}

|{{Composition bar|2|108|{{party color|Unified Lumumbist Party}}|per=1}}

{{flag|Djibouti}}

|Movement for Democratic Renewal and Development

|MRD

| {{n/a}}

|Admitted as consultative members in 2019.

| {{flag|Eswatini}}People's United Democratic MovementPUDEMO{{n/a}}Admitted as consultative member in 2013. Political parties are banned in Eswatini.
| {{GAB}}Gabonese Progress PartyPGP{{n/a}}Admitted as consultative member in 1996.

| colspan="2" |{{Composition bar|0|143|{{party color|Gabonese Progress Party}}|per=1}}

| {{GMB}}United Democratic PartyUDP{{no2}} in oppositionAdmitted as consultative member in 2012.

| colspan="2" |{{Composition bar|15|58|{{party color|United Democratic Party (The Gambia)}}|per=1}}

| {{GEO}}Social Democrats for the Development of GeorgiaSDD{{no2}} extra-parliamentaryAdmitted as consultative member in 2013.

| colspan="2" |{{Composition bar|0|150|{{party color|Social Democrats for the Development of Georgia}}|per=1}}

{{GHA}}

|Convention People's Party

|CPP

|{{no2}} extra-parliamentary

|Admitted as consultative member in 2018

| colspan="2" |{{Composition bar|0|275|{{party color|Convention People's Party}}|per=1}}

| {{GNB}}African Party for the Independence of Guinea and Cape VerdePAIGC{{no2}} in oppositionAdmitted as consultative member in 2008.

| colspan="2" |{{Composition bar|47|102|{{party color|African Party for the Independence of Guinea and Cape Verde}}|per=1}}

rowspan="2"| {{IRN}}Democratic Party of Iranian KurdistanPDKI{{n/a}}Admitted as observer member in 1996. Promoted to consultative member in 2008. Officially banned in Iran.
Komala Party of Iranian KurdistanKPIK{{n/a}}Admitted as observer member in 2014{{Cite web |title=Decisions on membership taken during the inter-congress period ratified by the XXV Congress |url=https://www.socialistinternational.org/councils/geneva-2014/ |access-date=2022-05-09 |website=Socialist International |language=en}} Promoted to consultative member in 2018{{Cite web |title=Geneva 2018 |url=https://www.socialistinternational.org/councils/geneva-2018/ |access-date=2022-05-09 |website=Socialist International |language=en}} Officially banned in Iran.
rowspan="2"| {{flag|Palestine}}Palestinian National Initiative{{cite web|title=Palestinian Territories|url=http://www.europeanforum.net/country/palestinian_territories|publisher=European Forum for Democracy and Solidarity|url-status=dead|archive-url=https://web.archive.org/web/20090603113808/http://www.europeanforum.net/country/palestinian_territories|archive-date=3 June 2009}}PNI{{no2}} in oppositionAdmitted as observer member in 2008. Promoted to consultative member in 2012.

| colspan="2" |{{Composition bar|2|132|{{party color|Palestinian National Initiative}}|per=1}}

Palestinian Popular Struggle Front

|PPSF

|{{partial

} junior partner in coalition

|Admitted as consultative member in 2018.

| colspan="2" |{{Composition bar|0|132|{{party color|Palestinian Popular Struggle Front}}|per=1}}

|-

|| {{flag|Sahrawi Republic}} || Polisario Front || POLISARIO || {{yes2}} in government || Admitted as observer member in 2008. Promoted to consultative member in 2017.[http://www.spsrasd.info/news/en/articles/2017/03/04/7511.html Polisario Front becomes consultative member of Socialist International association] Sahara Press Service, 4 March 2017[http://www.socialistinternational.org/viewArticle.cfm?ArticlePageID=931 MEMBER PARTIES of the SOCIALIST INTERNATIONAL - Consultative parties] Socialist International

| colspan="2" |{{Composition bar|51|51|{{party color|Polisario Front}}|per=1}}

|-

|| {{flag|São Tomé and Príncipe}} || Movement for the Liberation of São Tomé and Príncipe/Social Democratic Party || MLSTP/PSD || {{no2}}in opposition || Admitted as consultative member in 2013.

| colspan="2" |{{Composition bar|18|55|{{party color|Movement for the Liberation of São Tomé and Príncipe – Social Democratic Party}}|per=1}}

|-

|| {{flag|Syria}} || Democratic Union Party || PYD || {{no2}}extra-parliamentary opposition || Admitted as consultative member in November 2015.

| colspan="2" |{{Composition bar|0|250|{{party color|Democratic Union Party (Syria)}}|per=1}}

|-

|| {{TGO}} || Democratic Convention of African Peoples || CDPA || {{no2}}extra-parliamentary opposition || Admitted as consultative member in 1999.

| colspan="2" |{{Composition bar|0|91|{{party color|Democratic Convention of African Peoples}}|per=1}}

|-

|| {{UKR}} || Social Democratic Party of Ukraine{{cite web|title=Ukraine|url=http://www.europeanforum.net/country/ukraine|publisher=European Forum for Democracy and Solidarity|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120805233321/http://www.europeanforum.net/country/ukraine|archive-date=5 August 2012|url-status=dead}} || SDPU || {{no2}}extra-parliamentary opposition || Admitted as consultative member in 2003.

| colspan="2" |{{Composition bar|0|450|{{party color|Social Democratic Party of Ukraine}}|per=1}}

|}

=Observer parties=

There are eight observer parties:

class="wikitable sortable" style="text-align:left; font-size:95%"
style="background:#d82628; color:#fff;"|Country

! style="background:#d82628; color:#fff;"|Name

! style="background:#d82628; color:#fff;"|Abbr

! style="background:#d82628; color:#fff;"|Government

! style="background:#d82628; color:#fff; width:750px;"|Notes

| {{flagcountry|Eswatini}}Swazi Democratic PartySWADEPA{{n/a}}Admitted as observer member in June/July 2014.
| {{IRL}}Labour Party{{cite web|title=International Solidarity|url=http://www.labour.ie/party/international/|publisher=Labour Party (Ireland)|date=5 May 2004|access-date=14 July 2012|archive-date=13 July 2019|archive-url=https://web.archive.org/web/20190713163313/https://www.labour.ie/party/international/|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=180}}{{no2}} in opposition
| {{KEN}}Labour Party of KenyaAdmitted as observer member in 2012.
| {{KOS}}VetëvendosjeVV{{yes2}} in governmentAdmitted as observer member in 2018.
| {{flagcountry|Lesotho}}Lesotho Congress for DemocracyLCD{{partial|junior party in coalition}}Admitted as observer member in June/July 2014.
| {{flagcountry|Serbia}}Social Democratic Party of SerbiaSDPS{{partial|junior party in coalition}}Admitted as observer member in 2018.
| {{flagcountry|Somaliland}}Justice and Welfare PartyJWP{{no2}} in oppositionAdmitted as observer member in 2013{{Cite web |title=Istanbul 2013 |url=https://www.socialistinternational.org/councils/istanbul-2013/ |access-date=2022-05-09 |website=Socialist International |language=en}}
| {{UK}}Labour Party{{sfn|Lamb|Docherty|2006|p=63}}{{yes2}} in governmentMember since 1951.{{sfn|Lamb|Docherty|2006|p=63}} Currently holds a majority in Westminster, following the 2024 United Kingdom general election. Welsh Labour is in government in Wales and London Labour holds the London Mayoralty. The party asked to be downgraded to observer status in February 2013 "in view of ethical concerns, and to develop international co-operation through new networks."Black, Ann. (6 February 2013) [http://www.leftfutures.org/2013/02/report-from-labours-january-executive/ Report from Labour’s January executive]. Left Futures. Retrieved on 15 July 2013. The request was accepted later that year.
| {{UK}} (Northern Ireland)Social Democratic and Labour Party{{cite web|title=Our History|url=http://www.sdlp.ie/index.php/about_sdlp/our_history/|archive-url=https://web.archive.org/web/20091120142017/http://www.sdlp.ie/index.php/about_sdlp/our_history/|url-status=dead|archive-date=20 November 2009|publisher=Social Democratic and Labour Party}}{{sfn|Lamb|Docherty|2006|p=305}}SDLP{{no2}} in oppositionAdmitted as a full member in 1974.{{sfn|Lamb|Docherty|2006|p=305}}

=Former members=

{{Incomplete list|date=July 2024}}

class="wikitable sortable" style="text-align:left; font-size:95%"
style="background:#d82628; color:#fff;"|Country

! style="background:#d82628; color:#fff;"|Name

! style="background:#d82628; color:#fff;"|Abbr

! style="background:#d82628; color:#fff; width:750px;"|Notes

| {{ALB}}Social Democratic Party of Albania{{sfn|Lamb|Docherty|2006|p=27}}PSDAdmitted as consultative member in 1992. Promoted to full member in 1996.{{sfn|Lamb|Docherty|2006|p=27}} Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
{{flag|Algeria}}

|National Liberation Front

FLNExpelled following the 2019 Algerian protests.
| {{AND}}New DemocracyNDAdmitted as consultative member in 1999.
| {{ATG}}Antigua and Barbuda Labour PartyALPAdmitted as consultative member in 2008.
rowspan="2"| {{ARG}}Popular Socialist PartyPSPAdmitted as full member in 1992. Merged with the Democratic Socialist Party to form the Socialist Party.
Socialist Party{{cite web|url=http://www.partidosocialista.com.ar/PS/seccion.php?go=ps&t=h|title=Historia del Partido Socialista|publisher=Socialist Party (Argentina)|language=es|archive-url=https://web.archive.org/web/20120730121652/http://www.partidosocialista.com.ar/PS/seccion.php?go=ps&t=h|archive-date=30 July 2012|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=35}}PSFull member since 1951.{{sfn|Lamb|Docherty|2006|p=35}}
{{AZE}}

|Azerbaijani Social Democratic Party

|ASDP

|Admitted as observer member in 1996. Promoted to consultative member in 2003. Readmitted as consultative member in June/July 2014. Admitted as full member in 2016. Party dissolved in 2023.{{cite web | title=Ölkənin ən məşhur partiyası özünü buraxdı: Əlizadələrin qurduğu 34 illik ASDP-nin son beyanati| website=Yeni Müsavat | url=https://musavat.com/news/olkenin-en-meshur-partiyasi-ozunu-buraxdi-elizadelerin-qurdugu-34-illik-asdp-nin-son-beyanati_967970.html?d=1|date=4 April 2023 | language=az | access-date=9 April 2024}}

| {{ARU}}People's Electoral Movement{{sfn|Lamb|Docherty|2006|p=270}}MEPPromoted to full member in 1992. Full member since 1994.{{sfn|Lamb|Docherty|2006|p=270}} Delisted in December 2014.
| {{AUS}}Australian Labor Party{{sfn|Lamb|Docherty|2006|p=41}}ALPAdmitted as full member in 1966.{{sfn|Lamb|Docherty|2006|p=41}} Delisted in December 2014.
| {{AUT}}Social Democratic Party of AustriaSPÖAdmitted as a full member in 1951.{{sfn|Lamb|Docherty|2006|p=44}} Delisted in 2022.
| {{BAR}}Barbados Labour Party{{sfn|Lamb|Docherty|2006|p=46}}BLPAdmitted as full member in 1987.{{sfn|Lamb|Docherty|2006|p=46}} Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
rowspan="2"| {{BEL}}Belgian Socialist PartyPSB/BSPFounder member. Split in 1978.
ForwardDelisted in 2017.
rowspan="2"| {{BEN}}Democratic Union of Progressive ForcesUDFPAdmitted as observer member in 1992.
Social Democratic Party{{sfn|Lamb|Docherty|2006|p=310}}

|PSD

Admitted as consultative member in 1999.{{sfn|Lamb|Docherty|2006|p=310}} Promoted to full member in 2003.{{sfn|Lamb|Docherty|2006|p=310}}
| {{BIH}}Alliance of Independent Social DemocratsSNSDAdmitted as consultative member in 2003. Promoted to full member in 2008 Expelled in August 2012.
| {{BWA}}Botswana National FrontBNFAdmitted as observer member in 1996.
| {{BOL}}Revolutionary Left Movement{{sfn|Lamb|Docherty|2006|p=241}}MIRAdmitted as consultative member in 1986. Consultative member in 1987.{{sfn|Lamb|Docherty|2006|p=241}} Promoted to full member in 1992.{{sfn|Lamb|Docherty|2006|p=241}}
| {{BUL}}Bulgarian Euro-LeftBEL{{cite book |author=Janusz Bugajski|title=Political Parties of Eastern Europe: A Guide to Politics in the Post-Communist Era|url=https://books.google.com/books?id=9gGKtLTQlUcC&pg=PA790|access-date=6 February 2013|year=2002|publisher=M.E. Sharpe|isbn=978-1-56324-676-0|pages=790–}}Admitted as observer member in 1999.
| {{BUR}}Party for Democracy and Progress / Socialist Party{{sfn|Lamb|Docherty|2006|p=265}}PDP/PSAdmitted as full member circa 1995.{{sfn|Lamb|Docherty|2006|p=265}} Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
| {{BDI}}Front for Democracy in BurundiFRODEBUAdmitted as consultative member in 2003. Demoted to observer member in 2012 due to non-payment of membership fees.
Delisted in December 2014.
| {{flag|Canada|1957}}Co-operative Commonwealth FederationCCFBecame the New Democratic Party in 1961.
| {{CAN}}New Democratic Party{{sfn|Lamb|Docherty|2006|p=251}}NDP/NPDDelisted in 2018.{{cite news|url=https://www.cbc.ca/news/politics/ndp-votes-to-take-socialism-out-of-party-constitution-1.1385171|title=NDP votes to take 'socialism' out of party constitution|work=CBC News|author=Laura Payton|date=14 April 2013|access-date=26 May 2020}}{{Failed verification|date=July 2020}}
| {{CAF}}Movement for Democracy and Social ProgressMDPSAdmitted as observer member in 1992.
| {{IRN}}Kurdistan Democratic PartyKDPAdmitted as a full member in November 2015. Party dissolved in 2022.{{Cite web |url=https://www.rudaw.net/sorani/kurdistan/2108202226 |access-date=2023-12-30 |website=www.rudaw.net|title=Rudaw}} {{dead link|date=April 2024}}
| {{flag|Kyrgyzstan}}Social Democratic Party of KyrgyzstanSDPKPromoted to full member in June 2018. Party dissolved in 2020.|{{Cite web |last=ОСМОНАЛИЕВА |first=Бактыгуль |date=2020-05-27 |title=Как похоронили СДПК. Эпитафия для партии Алмазбека Атамбаева - |url=https://24.kg/vlast/153885_kak_pohoronili_sdpk_epitafiya_dlya_partii_almazbeka_atambaeva_/ |access-date=2023-12-30 |website=24.kg |language=ru-RU}}
| {{CIV}}Ivorian Popular Front{{sfn|Lamb|Docherty|2006|p=184}}FPIAdmitted as consultative member in 1992. Promoted to full member in 1996.{{sfn|Lamb|Docherty|2006|p=184}} Expelled in March 2011.{{cite web |title=SI Presidium addresses situation in Côte d'Ivoire|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=2104|publisher=Socialist International|date=19 March 2011}}
rowspan="2"| {{COL}}Alternative Democratic PolePDAFormer observer member. Delisted in December 2014.
M-19 Democratic AllianceAD/M-19Admitted as observer member in 1992.
| {{CUW}}Partido MANMANPromoted to full member in 1989. Delisted in 2017.
| {{DEN}}Social DemocratsSDFounding member. Withdrew in 2017.
| {{DMA}}Dominica Labour PartyDLPAdmitted as consultative member in 1996. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
| {{ECU}}Democratic Left{{sfn|Lamb|Docherty|2006|p=102}}PIDMember since 1987.{{sfn|Lamb|Docherty|2006|p=102}} Delisted in 2017.
rowspan="2" |{{EGY}}

|Egyptian Social Democratic Party

ESDP (or HMDI in Arabic)Admitted as consultative member in 2012. Promoted to full member in November 2015. Delisted in 2019 due to non-payment of membership fees.
National Democratic Party{{sfn|Lamb|Docherty|2006|p=245}}NDPAdmitted as full member in 1989. Full member since 1992.{{sfn|Lamb|Docherty|2006|p=245}} Expelled in January 2011.{{cite web|title=Letter to the General Secretary of the National Democratic Party, NDP Egypt|url=http://www.socialistinternational.org/images/dynamicImages/files/Letter%20NDP.pdf|publisher=Socialist International|date=31 January 2011|access-date=6 February 2011|archive-date=3 February 2011|archive-url=https://web.archive.org/web/20110203165721/http://www.socialistinternational.org/images/dynamicImages/files/Letter%20NDP.pdf|url-status=dead}}{{cite news|last=Gültaşli|first=Selçuk|title=Socialist International cancels Mubarak's party membership|url=http://www.todayszaman.com/news-234418-socialist-international-cancels-mubaraks-party-membership.html|newspaper=Today's Zaman|date=4 February 2011|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120103005406/http://www.todayszaman.com/news-234418-socialist-international-cancels-mubaraks-party-membership.html|archive-date=3 January 2012|url-status=dead}}{{cite news |last=Weigel|first=David|title=Socialist International Kicks Out Mubarak|url=http://www.slate.com/blogs/weigel/2011/02/04/socialist_international_kicks_out_mubarak.html|newspaper=Slate|date=4 February 2011}}
| {{ELS}}Democratic PartyPDAdmitted as observer member in 1996.
| {{EST}}Social Democratic Party{{cite web|title=History|url=http://www.sotsdem.ee/en/sotsidest/history/|publisher=Social Democratic Party (Estonia)|access-date=14 July 2012|archive-url=https://web.archive.org/web/20110810004058/http://www.sotsdem.ee/en/sotsidest/history/|archive-date=10 August 2011|url-status=dead}}{{cite book|title=Historical Dictionary of Socialism|year=2006|publisher=The Scarecrow Press|isbn=978-0-8108-5560-1|page=119|url=https://www.scribd.com/doc/34254398/Docherty-Historical-Dictionary-of-Socialism|author=Peter Lamb|edition=Second|author2=James C. Docherty|access-date=12 September 2017|archive-date=23 February 2014|archive-url=https://web.archive.org/web/20140223115609/http://www.scribd.com/doc/34254398/Docherty-Historical-Dictionary-of-Socialism|url-status=dead}}SDEMember since 1990. Withdrew in 2017.
| {{FIJ}}Fiji Labour PartyFLPAdmitted as consultative member in 1992. Expelled in 2008, due to the party's participation in a government issued from a military coup.
| {{FRA}}French Section of the Workers' InternationalSFIOFounding member. Member in 1951–1969.
| {{GEO}}Union of Citizens of GeorgiaCUGAdmitted as observer member in 1996. Party disbanded in 2003.
| {{GER}}Social Democratic Party of GermanySPDFounding member. Withdrew in 2017.
| {{GRL}}SiumutAdmitted as consultative member in 1986. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
| {{GUA}}Social Democratic Convergence{{sfn|Lamb|Docherty|2006|p=306}}CSDAdmitted as consultative member in 2003.{{sfn|Lamb|Docherty|2006|p=306}}
rowspan="3"| {{HAI}}Party of the National Congress of Democratic MovementsKONAKOMAdmitted as consultative member in 1992. Promoted to full member in 1996.
Struggling People's OrganizationOPLAdmitted (as Lavalas Political Organisation) as observer member in 1996.
Revolutionary Progressive Nationalist PartyPANPRAAdmitted as consultative member in 1989. Promoted to full member in 1992.
{{HUN}}

|Social Democratic Party of Hungary

|MSZDP

Member since 1990. Admitted as observer member in 1992. Promoted to consultative member in 1999.

Promoted to full member in 2003. Delisted in 2020 due to inactivity

rowspan="2"| {{ISL}}Social Democratic PartyAMember since 1987.{{sfn|Lamb|Docherty|2006|p=160}} Formed Social Democratic Alliance in 2000.
Social Democratic AllianceSWithdrew in 2017.
| {{IRN}}League of Iranian SocialistsJoined in 1960.{{citation|title=Iran Almanac and Book of Facts|issue=5|publisher=Echo of Iran|year=1966|edition=5th|page=240|chapter=Socialist League}} It was dissolved in 1980s.
rowspan="2"| {{ISR}}Israeli Labor Partyhttps://www.socialistinternational.org/about-us/members/{{sfn|Lamb|Docherty|2006|p=308}}AvodaUntil May 2020, it temporarily suspended membership in July 2018 over SI's adoption of BDS policies.{{cite news | url=https://www.jpost.com/BDS-THREAT/Israels-Labor-party-quits-Socialist-International-after-it-adopts-BDS-562149 | title=Israel's Labor party quits Socialist International after it adopts BDS - BDS - Jerusalem Post| newspaper=The Jerusalem Post | Jpost.com}}
MeretzMerged with Israeli Labor Party to form The Democrats in 2024.
rowspan="4"| {{ITA}}Democratic Party of the LeftPDSAdmitted as full member in 1992. Merged with others to form Democrats of the Left in 1998.
Democrats of the Left{{sfn|Lamb|Docherty|2006|p=105}}DSFull member since 1992 as Democratic Party of the Left.{{sfn|Lamb|Docherty|2006|p=105}} Merged with other movements to form the Democratic Party in 2007. Listed as SI member until XXIV Congress in 2012.
Italian Socialist PartyPSIParty dissolved in 1994 and succeeded by the Italian Socialists (who formed the Italian Democratic Socialists in 1998 and resumed as the Italian Socialist Party in 2007).
Italian Democratic Socialist PartyPSDIFounding member. Party merged into the Italian Democratic Socialists in 1998 (renamed into Italian Socialist Party in 2007).
rowspan="2" | {{JAP}}Democratic Socialist PartyDSP/Minsha-tōAdmitted as SI member in 1961.{{cite book |author1=James C. Docherty|author2=Peter Lamb|title=Historical Dictionary of Socialism|url=https://books.google.com/books?id=JRYjU-L4F7wC&pg=PA187|access-date=28 January 2013|date=2 October 2006|publisher=Scarecrow Press|isbn=978-0-8108-6477-1|pages=187–}} Merged with non-socialist movements to form the New Frontier Party in 1994.
Japan Socialist PartyJSP/Shakai-tōAdmitted as SI member in 1951.{{sfn|Lamb|Docherty|2006|p=186}} Refounded as the Social Democratic Party in 1996.
| {{JOR}}Jordanian Democratic Party of the LeftJDPLAdmitted as observer member in 2003.
| {{KGZ}}Ata Meken Socialist Party{{cite web|title=Kyrgyzstan|url=http://www.europeanforum.net/country/kyrgyzstan|publisher=European Forum for Democracy and Solidarity|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120617104457/http://www.europeanforum.net/country/kyrgyzstan|archive-date=17 June 2012|url-status=dead}}Admitted as observer member in 2008.
rowspan="2"| {{LAT}}Latvian Social Democratic Workers' Party{{sfn|Lamb|Docherty|2006|p=203}}LSDSPFull member since 1994.{{sfn|Lamb|Docherty|2006|p=203}} Demoted to observer member in 2012 due to non-payment of membership fees.
Delisted in December 2014.
Social Democratic Party "Harmony"SDPSAdmitted as consultative member in June/July 2014. Withdrew in 2017.
| {{MKD}}Social Democratic Union of Macedonia{{cite web|title=International cooperation|url=http://www.sdsm.org.mk/Default.aspx?mId=83&lId=2|publisher=Social Democratic Union of Macedonia|access-date=14 July 2012|archive-date=8 September 2018|archive-url=https://web.archive.org/web/20180908015645/http://www.sdsm.org.mk/Default.aspx?mId=83&lId=2|url-status=dead}}{{cite web|title=FYR Macedonia|url=http://www.europeanforum.net/country/fyr_macedonia|publisher=European Forum for Democracy and Solidarity|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120813084523/http://www.europeanforum.net/country/fyr_macedonia|archive-date=13 August 2012|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=315}}SDSMAdmitted as observer member in 1996. Promoted to full member in 2003.{{sfn|Lamb|Docherty|2006|p=315}} Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
| {{MAD}}Party for National UnityVITMAdmitted as consultative member in 1989.
| {{MYS}}Democratic Action Party{{cite web |title=International Solidarity|url=https://dapmalaysia.org/en/about-us/international-solidarity/|publisher=Democratic Action Party}}{{sfn|Lamb|Docherty|2006|p=100}}DAPFull member since 1987.{{sfn|Lamb|Docherty|2006|p=100}} Delisted in 2017.
{{MEX}}

|Party of the Democratic Revolution{{sfn|Lamb|Docherty|2006|p=268}}

|PRD

Admitted as full member in 1996.{{sfn|Lamb|Docherty|2006|p=268}}
| {{MDA}}Social Democratic Party of MoldovaPSDMAdmitted as observer member in 1996.
| {{MNG}}Mongolian Social Democratic Party{{sfn|Lamb|Docherty|2006|p=238}}MSDPAdmitted as consultative member in 1992.{{sfn|Lamb|Docherty|2006|p=238}} Promoted to full member in 1996. Merged with others in 2000 to form the Democratic Party.
| {{NAM}}Congress of DemocratsCoDAdmitted as consultative member in 2003. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
| {{NLD}}Labour Party{{cite web|title=Partners|url=http://internationaal.pvda.nl/general/Partners|publisher=Labour Party (Netherlands)|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120726145535/http://internationaal.pvda.nl/general/Partners|archive-date=26 July 2012|url-status=dead}}PvdADecided to minimise involvement in SI in December 2012.[http://www.pvda.nl/berichten/2012/12/PvdA+steunt+oprichting+Progressive+Alliance PvdA steunt oprichting Progressive Alliance | PvdA] {{Webarchive|url=https://web.archive.org/web/20150924083343/http://www.pvda.nl/berichten/2012/12/PvdA+steunt+oprichting+Progressive+Alliance |date=24 September 2015 }}. Pvda.nl (19 December 2012). Retrieved on 15 July 2013. Delisted in December 2014.
| {{NZL}}New Zealand Labour Party{{sfn|Lamb|Docherty|2006|p=253}}NZLPMember since 1952.{{sfn|Lamb|Docherty|2006|p=253}} Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
{{Flagicon|Nicaragua}}Nicaragua

|Sandinista National Liberation Front

|FSLN

|Expelled in January 2019 because of violation of human rights during the Nicaraguan protests

{{flag|Nigeria}}

|All Progressives Congress

|APC

Admitted as consultative member in December 2014.
| {{flag|North Vietnam}}Vietnamese Socialist Party{{sfn|Lamb|Docherty|2006|p=355}}Consultative member between 1955 and 1969.{{sfn|Lamb|Docherty|2006|p=355}}
| {{NOR}}Labour Party{{cite web |title=Information in English|url=http://arbeiderpartiet.no/Kontakt/Information-in-English|publisher=Labour Party (Norway)}}{{sfn|Lamb|Docherty|2006|p=255}}DNAMember since 1951.{{sfn|Lamb|Docherty|2006|p=255}} Withdrew in 2016.
rowspan="2"| {{PRY}}Party for a Country of Solidarity{{cite web|title=Party for a Country of Solidarity|url=http://www.paissolidario.org.py/|publisher=Party for a Country of Solidarity|language=es|access-date=14 July 2012|archive-date=3 July 2008|archive-url=https://web.archive.org/web/20080703042956/http://www.paissolidario.org.py/|url-status=dead}}PPSAdmitted as consultative member in 2003. Promoted to full member in 2008.
Revolutionary Febrerista Party{{cite web |title=Socialist International met in Paraguay ahead of presidential elections|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=1860|publisher=Socialist International}}{{sfn|Lamb|Docherty|2006|p=121}}PRFAdmitted as full member in the 1970s.{{sfn|Lamb|Docherty|2006|p=121}}
| {{PHL}}AkbayanAdmitted as consultative member in 2003.
rowspan="3"| {{POL}}Democratic Left Alliance{{cite web|title=English|url=http://www.sld.org.pl/strony/40-english.html|publisher=Democratic Left Alliance|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120522000240/http://www.sld.org.pl/strony/40-english.html|archive-date=22 May 2012|url-status=dead}}{{sfn|Lamb|Docherty|2006|p=103}}SLDFull member since 1996.{{sfn|Lamb|Docherty|2006|p=103}} Withdrew in 2017.
Labour Union{{sfn|Lamb|Docherty|2006|p=352}}UPAdmitted as full member in 1996.{{sfn|Lamb|Docherty|2006|p=352}} Demoted to observer member in 2012 due to non-payment of membership fees.
Delisted in December 2014.
Social Democracy of the Republic of PolandSdRPAdmitted as full member in 1996. Absorbed into the Democratic Left Alliance in 1999.
| {{ROU}}Democratic PartyPDAdmitted as consultative member in 1996. Promoted to full member in 1999. Merged with the Liberal Democratic Party to form the Democratic Liberal Party.
| {{RUS}}A Just Russia — Patriots — For Truth{{cite web|title=Russia|url=http://www.europeanforum.net/country/russia|publisher=European Forum for Democracy and Solidarity|url-status=dead|archive-url=https://web.archive.org/web/20120622115634/http://www.europeanforum.net/country/russia|archive-date=22 June 2012}}{{cite web|title=Just Russia – member of Socialist International|url=http://mironov.info/socialist-international/just-russia-member-of-socialist-international/|publisher=Sergey Mironov|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120728215854/http://mironov.info/socialist-international/just-russia-member-of-socialist-international/|archive-date=28 July 2012|url-status=dead}}SRZPAdmitted as observer member in 2008. Promoted to consultative member in 2010. Promoted to full member in 2012.{{cite web|url=http://www.spravedlivo.ru/news/anews/19005.php|title=СПРАВЕДЛИВАЯ РОССИЯ стала полноправным членом Социнтерна|publisher=A Just Russia|language=ru|access-date=2 September 2012|archive-url=https://web.archive.org/web/20120907214414/http://www.spravedlivo.ru/news/anews/19005.php|archive-date=7 September 2012|url-status=dead}} Expelled in March 2022 for its support for the Russian invasion of Ukraine.{{Cite web|url=https://www.socialistinternational.org/news/press-releases/decision-regarding-membership-of-a-just-russia-patriots-for-the-truth-party-1998/|title = Decision regarding membership of a Just Russia-Patriots-For the Truth Party}}
| {{RUS}}Social Democratic Party of RussiaSDPRAdmitted as consultative member in 2003.
| {{KNA}}Saint Kitts and Nevis Labour PartySKNLPAdmitted as consultative member in 1992. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
rowspan="2"| {{LCA}}Progressive Labour PartyExpelled in 1992.
Saint Lucia Labour PartySLPAdmitted as consultative member in 1992. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
rowspan="2"| {{VCT}}Saint Vincent Labour PartySVGLPAdmitted as consultative member in 1989. Merged with the Movement for National Unity in 1994 to form the Unity Labour Party.
Unity Labour PartyULPDemoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
rowspan="2" |{{SRB}}

|Democratic Party{{cite web|url=http://www.europeanforum.net/country/serbia#social_democratic_parties|title=Serbia|publisher=European Forum for Democracy and Solidarity|archive-url=https://web.archive.org/web/20150530101254/http://www.europeanforum.net/country/serbia#social_democratic_parties|archive-date=30 May 2015|url-status=dead}}

|DS

Admitted as consultative member in 2003. Promoted to full member in 2008.
Social Democratic PartySDPAdmitted as consultative member in 2003. Promoted to full member in 2008.
Demoted to observer member in 2012 due to non-payment of membership fees. Ceased to exist in 2009
| {{SIN}}People's Action PartyPAPResigned in 1976 in response to the Dutch Labour Party's charges of violations of human rights and detention of political prisoners without trial,{{Cite news|date=1976-06-01|title=Main Singapore Party Quits The Socialist International|language=en-US|work=The New York Times|url=https://www.nytimes.com/1976/06/01/archives/main-singapore-party-quits-the-socialist-international.html|access-date=2021-05-13|issn=0362-4331}} and DLP and the British Labour Party's charges of media censorship.{{Cite news|date=31 May 1976|title=Facts refute the allegations by Dutch and British|work=New Nation|url=https://eresources.nlb.gov.sg/newspapers/Digitised/Article/newnation19760531-1.2.20|access-date=13 May 2021|via=NewspaperSG}}{{Cite news|date=31 May 1976|title=Why there are Govt men in Chinese papers|work=New Nation|url=https://eresources.nlb.gov.sg/newspapers/Digitised/Article/newnation19760531-1.2.19|access-date=13 May 2021|via=NewspaperSG}}
rowspan="2"| {{SVK}}Party of the Democratic LeftSDĽAdmitted as full member in 1996. Merged with Direction – Social Democracy in 2005.
Social Democratic Party of SlovakiaSDSSAdmitted as full member in 1992. Merged with Direction – Social Democracy in 2005.
rowspan="2"| {{SVN}}Slovenian Democratic PartySDSAdmitted (as the Social Democratic Party of Slovenia) as observer member in 1992.
Social Democrats{{sfn|Lamb|Docherty|2006|p=316}}SDAdmitted (as United List of Social Democrats) as full member in 1996.{{sfn|Lamb|Docherty|2006|p=316}} Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
| {{SWE}}Swedish Social Democratic PartySAPWithdrew in March 2017.{{cite web|url=http://www.vk.se/1953407/lofven-till-styrelsen-for-ny-organisation|title=Löfven till styrelsen för ny organisation|website=vk.se|language=sv|access-date=2 March 2020|url-status=dead|archive-url=https://web.archive.org/web/20170310162121/http://www.vk.se/1953407/lofven-till-styrelsen-for-ny-organisation|archive-date=10 March 2017}}
| {{CHE}}Social Democratic Party of Switzerland{{cite web|title=Internationale socialiste|url=http://www.sp-ps.ch/fre/Parti/Organisation/PS-international/Internationale-socialiste|publisher=Social Democratic Party of Switzerland|language=fr|access-date=14 July 2012|archive-url=https://web.archive.org/web/20120305235909/http://www.sp-ps.ch/fre/Parti/Organisation/PS-international/Internationale-socialiste|archive-date=5 March 2012|url-status=dead}}SP/PSWithdrew in 2017.
{{TAN}}

|Chama Cha Mapinduzi

CCMAdmitted as full member in 2013.
{{TLS}}

|Revolutionary Front for an Independent East Timor

FRETILINAdmitted as consultative member in 2003.
rowspan="2"| {{TUN}}Democratic Constitutional Rally{{sfn|Lamb|Docherty|2006|p=101}}RCDAdmitted as full member in 1989. Full member since 1993.{{sfn|Lamb|Docherty|2006|p=101}} Expelled in January 2011.{{cite web |title=SI decision on Tunisia|url=https://www.socialistinternational.org/news/press-releases/si-decision-on-tunisia-1141|publisher=Socialist International|date=17 January 2011}}
Popular Unity MovementMUPAdmitted as consultative member in 1989.
rowspan="4"| {{TUR}}Democratic Left PartyDSPAdmitted as consultative member in 1986. Expelled in 1992.
Democratic People's PartyDEHAPAdmitted as observer member in 2003. Merged with the Democratic Society Movement to form the Democratic Society Party which in turn was succeeded by the Peace and Democracy Party.
Social Democracy Party{{sfn|Lamb|Docherty|2006|p=289}}SODEPFull member since 1990.{{sfn|Lamb|Docherty|2006|p=289}} Merged with the Republican People's Party in 1995.{{sfn|Lamb|Docherty|2006|p=289}}
Social Democratic Populist PartySHPAdmitted as consultative member in 1986. Promoted to full member in 1989. Merged with the Republican People's Party in 1995.
| {{UKR}}Socialist Party of UkraineSPUAdmitted as consultative member in 2003. Expelled in July 2011.[http://www.pravda.com.ua/news/2011/07/3/6352402/ Партію Мороза виключили з Соцінтерну], Ukrayinska Pravda, 03, July 2011
rowspan="3" |{{USA}}

|Democratic Socialists of America

|DSA

|Had been a member of SI since founding in 1982, withdrew in August 2017.{{cite web|url=http://www.leftvoice.org/DSA-Votes-for-BDS-Reparations-and-Out-of-the-Socialist-International|title=DSA Votes for BDS, Reparations, and Out of the Socialist International|first=Juan Cruz|last=Ferre|date=5 August 2017|access-date=7 August 2017}}

Democratic Socialist Organizing Committee

|DSOC

|Member since 1976,{{Cite book |last=Harrington |first=Michael |title=The long-distance runner: an autobiography |date=January 1, 1988 |publisher=Holt |isbn=978-0-8050-0790-9 |edition=1st |location=New York, N.Y |pages=151–153}} merged with the New American Movement in 1982 to form the Democratic Socialists of America, which remained a member until 2017.

Social Democrats, USA{{sfn|Lamb|Docherty|2006|p=316}}SDUSAMember since 1972.{{sfn|Lamb|Docherty|2006|p=316}} Withdrew in 2005.
rowspan="2"| {{URY}}Party for the Government of the PeoplePGPAdmitted as consultative member in 1992. Merged with the Colorado Party in 1994.
Socialist Party of Uruguay{{sfn|Lamb|Docherty|2006|p=327}}PSUAAdmitted as full member in 1999.{{sfn|Lamb|Docherty|2006|p=327}} Withdrew in 2017.[https://www.elobservador.com.uy/nota/internacional-socialista-se-reunio-en-uruguay-con-preocupacion-por-lo-que-ocurra-en-venezuela-2018518500 Internacional Socialista se reunió en Uruguay con preocupacion por lo que ocurra en Venezuela] - El Observador, 18 May 2018
rowspan="2"| {{VEN}}For Social DemocracyPODEMOSAdmitted as consultative member in 2008.
Movement for Socialism

|MAS

Admitted as consultative member in 2003.
{{ZAM}}

|Patriotic Front

|PF

Admitted as consultative member in 2013.
|{{ZIM}}Movement for Democratic ChangeMDCAdmitted as full member in 2008. Delisted in 2017.

Fraternal organisations

Associated organisations

{{columns-list |colwidth=15em|

}}

See also

{{Portal|Socialism}}

:;Left-wing Internationals

Chronologically by ideology:

;United left wing

;Anarchist

;Socialist & labour

;Communist

;Trotskyist

;Democratic socialism

  • Socialist International (est. 1951)

;Reunification efforts

  • Fifth International, phrase referring to socialist and communist groups aspiring to create a new workers' international

Notes

{{reflist|30em}}

References

{{refbegin}}

  • {{cite book|title=Historical Dictionary of Socialism|year=2006|publisher=The Scarecrow Press|isbn=978-0-8108-5560-1|url=https://www.scribd.com/doc/34254398/Docherty-Historical-Dictionary-of-Socialism|first1=Peter|last1=Lamb|edition=Second|first2=James C.|last2=Docherty|access-date=12 September 2017|archive-date=23 February 2014|archive-url=https://web.archive.org/web/20140223115609/http://www.scribd.com/doc/34254398/Docherty-Historical-Dictionary-of-Socialism|url-status=dead}}

{{refend}}

Further reading

  • [https://archive.org/details/TheSocialistInternational The Socialist International by Nikolai Sibilev, 1984.]
  • [https://archive.org/details/SocialDemocracyAndSouthernAfrica Social Democracy and Southern Africa by Vladimir Shubin (pseudonym of Vladimir Bushin), 1989.]
  • Julius Braunthal, "The Rebirth of Social Democracy," Foreign Affairs, vol. 27, no. 4 (July 1949), pp. 586–600. [https://www.jstor.org/stable/20030209 In JSTOR]
  • Pentti Vaananen, The Rose and the Fist, SYS Print, 2014, pp. 50–230. {{ISBN|978-952-93-3706-4}}

External links

  • {{official website}}

{{Socialist International|state=expanded}}

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