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{{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}}
{{Social democracy}}
{{Infobox organization
]
| name = Socialist International
The '''Socialist International''' is a worldwide organization of ] and the biggest ] political parties. It draws its name from the ], which was formed in ] and dissolved on the eve of ] in ]. Among the Second International's most famous actions were its ] declaration of ] as International ] and its ] declaration of ] as International ]. While the Second International was split by the outbreak of World War I, a skeleton form survived through the ]. The International re-formed in ] (as the ]), and was reconstituted again, in its present form, after ] (during which many social democratic and ] parties had been suppressed in ]-occupied ]).
| 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<br/>Dark red: Countries with the ruling party affiliated with the Socialist International
| map2 =
| abbreviation = SI
| motto =
| predecessor = ]
| successor =
| formation = {{start date and age|df=yes|1951|06|03}}
| extinction =
| type = ]
| status =
| purpose = "Strengthen relations between the affiliated parties and to coordinate their political attitudes and activities"<ref name="statutes">{{cite web|title=Statutes of the Socialist International|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=27|publisher=Socialist International}}</ref>
| headquarters =
| location = ], {{postcode|SW|4}}<br />]
| coords =
| region_served = Worldwide
| membership = 119 political parties and 13 affiliated organizations
| language =
| leader_title = President
| leader_name = ]
| leader_title2 = Vice-President
| leader_name2 = ]
| leader_title3 = Secretary General
| leader_name3 = ]
| 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)}}<ref>{{cite web|title=Finances of the International|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=2134|publisher=Socialist International}}</ref>
| num_staff =
| num_volunteers =
| website =
| remarks =
| former name =
| secessions = ]
}}
{{Socialism sidebar|orgs}}
{{Social democracy sidebar|orgs}}
The '''Socialist International''' ('''SI''') is a ] or worldwide organisation of political parties which seek to establish ],<ref name="statutes"/> consisting mostly of ] political parties and ] organisations.


Although formed in 1951 as a successor to the ], it has antecedents in the late 19th century. The organisation currently includes 132 member parties<ref>{{cite web|title=About Us|url=http://www.socialistinternational.org/about.cfm|publisher=Socialist International}}</ref> 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 ].<ref name="Quimpo2020">{{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}}</ref>
During the post-] period, the SI aided social democratic parties in re-establishing themselves when dictatorship gave way to democracy in ] (1974) and ] (1975). Until its 1976 ] Congress, the Socialist International had few members outside Europe and no formal involvement with ]<ref>The Dictionary of Contemporary Politics of South America, Routledge, 1989</ref>. In the ]s, most SI parties gave their backing to the ]n ]s (FSLN), whose ] government had incited enmity from the ]. Since then, the SI has admitted as member-parties not only the FSLN but also the ] ], as well as the ex-] parties such as the ] ] (Democratici di Sinistra (DS)) and the ] (FRELIMO).


The current secretary general of the SI is ] of ], the current president is the ], ], and the current vice-president is ] of ],<ref name="presidium">{{cite web|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=11|title=Presidium|publisher=Socialist International}}</ref> all of whom were elected at the last SI Congress held in Madrid, Spain, in November 2022.
The ], a ] active in the ], is an associated organisation of the Socialist International.


== Presidents == ==History==
===First and Second Internationals (1864–1916)===
As of ], ], leader of the ], is the president of the Socialist International.
The ], also known as the First International, was the first international body to bring together organisations representing the ].{{sfn|Lamb|Docherty|2006|p=176}} It was formed in ] 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 ].{{sfn|Lamb|Docherty|2006|p=xxv}}


The ] was formed in Paris on 14 July 1889 as an association of the socialist parties.{{sfn|Lamb|Docherty|2006|p=302}} Differences over ] led to the Second International being dissolved in 1916.
* 1951-1957: ]
* 1957-1962: ]
* 1963: ]
* 1964-1976: ]
* 1976-1992: ]
* 1992-1999: ]
* 1999-2005: ]
* 2006-present: ]


===Labour and Socialist International (1919–1940)===
===Honorary Presidents===
The ] (ISC), also known as the Berne International, was formed in February 1919 at a meeting in ] by parties that wanted to resurrect the Second International.{{sfn|Lamb|Docherty|2006|p=52}} In March 1919, Communist parties formed the ] ("Comintern"), the Third International, at a ].{{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 ] (IWUSP, also known as Vienna International, Vienna Union, or Two-and-a-Half International) on 27 February 1921 at a conference in ].{{sfn|Lamb|Docherty|2006|p=177}} The ISC and the IWUSP joined to form the ] (LSI) in May 1923 at a meeting in ].{{sfn|Lamb|Docherty|2006|p=197}} The rise of ] and the start of ] led to the dissolution of the LSI in 1940.
== Congresses ==


===Socialist International (1951–present)===
*I 1951 ]
The Socialist International was formed in ] in July 1951 as a successor to the LSI.{{sfn|Lamb|Docherty|2006|p=320}}
*II 1952 ]
*III 1953 ]
*IV 1955 ]
*V 1957 ]
*VI 1959 ]
*VII 1961 ]
*VIII 1963 ]
*IX 1964 ]
*X 1966 ]
*XI 1969 ]
*XII 1972 ]
*XIII 1976 ]
*XIV 1978 ]
*XV 1980 ]
*XVI 1983 ]
*XVII 1986 ]
*XVIII 1989 ]
*XIX 1992 ]
*XX 1996 ]
*XXI 1999 ]
*XXII 2003 ]


During the post-] period, the SI aided social democratic parties in re-establishing themselves when dictatorship gave way to democracy in ] and ]. Until its 1976 Geneva Congress, the SI had few members outside Europe and no formal involvement with ].<ref>The Dictionary of Contemporary Politics of South America, Routledge, 1989</ref> In the 1980s, most SI parties gave their backing to the ] (FSLN), whose democratically elected ] government was subject to a campaign to overthrow it backed by the ], which culminated in the ] after the ] covertly continued US support for the ] after such support was banned by ].
== Full member parties ==
] with outgoing secretary general ] (left) and new secretary general ] (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 ] period, the ] and the ], on issues concerning East–West relations and arms control. The SI supported ] and disarmament agreements, such as ] II, ] and ]. They had several meetings and discussion in ], with ] ] and ] ] and in ] with ] ] and ]. The SI's delegations to these discussions were led by the ] ].<ref>{{cite book|last=Väänänen|first=Pentti|year=2012|title=Purppuraruusu ja samettinyrkki|edition=1st|language=fi|publisher=Kellastupa|pages=192–194|isbn=9789525787115}}</ref>


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).
=== Currently Governing ===


Following the ], the ] was expelled from the SI in January 2011;<ref name=SI170111/> later that month the ]ian ] was also expelled;<ref>{{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}}</ref> and as a result of the ], the ] was expelled in March 2011,<ref name=SI190311/> 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.<ref>{{Cite web|url=https://www.socialistinternational.org/about-us/statutes/|title=Statutes|website=Socialist International|language=en|access-date=3 May 2019}}</ref> These were long term ruling parties of one-party states that were overthrown in the protests of the ].
* '''{{AGO}}''' - ]
* '''{{ALG}}''' - ]
* '''{{ARM}}''' - ]
* '''{{ARU}}''' - ]
* '''{{AUS}}''' - ]
* '''{{AUT}}''' - ]
* '''{{BEL}}''' - ]
* '''{{BEL}}''' - ]
* '''{{BUL}}''' - ]
* '''{{BUL}}''' - ]
* '''{{CPV}}''' - ]
* '''{{CHE}}''' - ]
* '''{{CHL}}''' - ]
* '''{{CHL}}''' - ]
* '''{{CHL}}''' - ]
* '''{{CIV}}''' - ]
* '''{{EGY}}''' - ]
* '''{{EST}}''' - ]
* '''{{GER}}''' - ] (''coalition with ]'')
* '''{{HAI}}''' - ]
* '''{{HUN}}''' - ]
* '''{{IRQ}}''' - ]
* '''{{IRQ}}''' - ]
* '''{{ISL}}''' - ]
* '''{{ISR}}''' - ] (''coalition with ]'')
* '''{{ITA}}''' - ]
* '''{{LBN}}''' - ]
* '''{{LTU}}''' - ]
* '''{{MAR}}''' - ]
* '''{{MLI}}''' - ]
* '''{{MNG}}''' - ]
* '''{{MNE}}''' - ]
* '''{{MNE}}''' - ]
* '''{{MOZ}}''' - ]
* '''{{MUS}}''' - ]
* '''{{NPL}}''' - ]
* '''{{NLD}}''' - ]
* '''{{NZL}}''' - ]
* ''']''' - ] (''coalition partner in ]'')
* '''{{NIC}}''' - ]
* '''{{NOR}}''' - ]
* '''{{PAN}}''' - ]
* '''{{PER}}''' - ]
* '''{{PRT}}''' - ]
* '''{{KNA}}''' - ]
* '''{{VCT}}''' - ]
* '''{{SMR}}''' - ]
* '''{{SVK}}''' - ]
* '''{{ESP}}''' - ]
* '''{{ZAF}}''' - ] (])
* '''{{TUN}}''' - ]
* '''{{GBR}}''' - ]
* '''{{URY}}''' - ]
* '''{{URY}}''' - ]


===Progressive Alliance split (2013)===
=== Non-Governing ===
On 22 May 2013 the ] along with some other current and former member parties of the SI founded a rival international network of social-democratic parties known as the ], citing the perceived undemocratic and outmoded nature of the SI,<ref>. Sueddeutsche.de. Retrieved on 15 July 2013.</ref><ref>. Spiegel.de (22 May 2013). Retrieved on 15 July 2013.</ref><ref>. FAZ. Retrieved on 15 July 2013.</ref><ref>{{in lang|de}} . n-tv.de. Retrieved on 15 July 2013.</ref> 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 ] and the delayed ouster of the ] ] and ] ].<ref>{{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}}</ref><ref>{{cite web |author=Sigmar Gabriel |date=3 February 2011 |title=Gastbeitrag: Keine Kumpanei mit Despoten &#124; 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}}</ref>


After the 2012 Congress, the SI underwent major changes as many of the large European parties allowed their membership to lapse &ndash; for example the ] (SPD) and the ] &ndash; or downgraded their membership to observer status &ndash; for example, the British ] and the Norwegian ] (DNA). These parties now concentrate their international links on the Progressive Alliance, with the SI's focus now increasingly being on the global south.
* '''{{ALB}}''' - ]
* '''{{ALB}}''' - ]
* '''{{AND}}''' - ]
* '''{{ARG}}''' - ]
* '''{{ARG}}''' - ]
* '''{{BAR}}''' - ]
* '''{{BEN}}''' - ]
* '''{{BOL}}''' - ]
* '''{{BIH}}''' - ]
* '''{{BRA}}''' - ]
* '''{{BUR}}''' - ]
* '''{{CMR}}''' - ]
* '''{{CAN}}''' - ]
* '''{{COL}}''' - ]
* '''{{CRO}}''' - ]
* '''{{CUR}}''' - ]
* '''{{CYP}}''' - ]
* '''{{CZE}}''' - ]
* '''{{DEN}}''' - ]
* '''{{DOM}}''' - ]
* '''{{ECU}}''' - ]
* '''{{EQG}}''' - ]
* '''{{FIN}}''' - ]
* '''{{FRA}}''' - ]
* '''{{GRE}}''' - ]
* '''{{GUI}}''' - ]
* '''{{HUN}}''' - ]
* '''{{IRL}}''' - ]
* '''{{ISR}}''' - ]
* '''{{JPN}}''' - ]
* '''{{LAT}}''' - ]
* '''{{LUX}}''' - ]
* '''{{MKD}}''' - ]
* '''{{MLI}}''' - ]
* '''{{MYS}}''' - ]
* '''{{MUS}}''' - ]
* '''{{MEX}}''' - ]
* '''{{NER}}''' - ]
* '''{{PAK}}''' - ]
* '''{{PRY}}''' - ]
* '''{{POL}}''' - ]
* '''{{POL}}''' - ]
* '''{{PUR}}''' - ] (PIP)
* '''{{ROU}}''' - ]
* '''{{LCA}}''' - ]
* '''{{SEN}}''' - ]
* '''{{SVN}}''' - ]
* '''{{SWE}}''' - ]
* '''{{TUR}}''' - ]
* '''{{USA}}''' - ] (DSA does not define itself as a political party)
* '''{{VEN}}''' - ]


===Relationship with Latin America===
== Consultative parties ==
For a long time, the Socialist International remained distant from Latin America, considering the region as a zone of influence of the ]. For example, it did not denounce the ] against Socialist President ] in Guatemala in 1954 or the ]. It was not until the ] that "a world we did not know" was discovered, explained Antoine Blanca, a diplomat for the French ]. 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 ], the SI supported the ] in Nicaragua and other movements in El Salvador, Guatemala, and Honduras in their struggle against US-supported dictatorships.<ref name=":0">{{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}}</ref>
* '''{{AZE}}''' - ]
* '''{{BLR}}''' - ]
* '''{{BIH}}''' - ]
* '''{{BDI}}''' - ]
* '''{{DMA}}''' - ]
* '''{{FJI}}''' - ]
* '''{{GAB}}''' - ]
* '''{{GHA}}''' - ]
* '''{{GTM}}''' - ]
* '''{{GRL}}''' - ]
* '''{{GUY}}''' - ]
* '''{{MLI}}''' - ]
* '''{{NAM}}''' - ]
* '''{{NAM}}''' - ]
* '''{{PRY}}''' - ]
* '''{{PHL}}''' - ]
* '''{{PHL}}''' - ]
* '''{{RUS}}''' - ]
* '''{{KNA}}''' - ]
* '''{{LCA}}''' - ]
* '''{{VCT}}''' - ]
* '''{{SRB}}''' - ]
* '''{{SRB}}''' - ]
* '''{{TLS}}''' - ''']'''
* '''{{TGO}}''' - ]
* '''{{TUN}}''' - ]
* '''{{UKR}}''' - ]
* '''{{UKR}}''' - ]
* '''{{VEN}}''' - ]


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 ] (Mexico) at the SI. It is home to "the very centrist Argentinean ] (UCR); the Mexican ] (PRI), which was not very democratically in power for seventy years; the ]—under whose governments the left-wing formation ] (1986–1990) was exterminated—introduced the neoliberal model (1990–1994) and to which, until 2002, ] 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.<ref name=":0"/>
== Observer parties ==
* '''{{BWA}}''' - ]
* '''{{BUL}}''' - ]
* '''{{CAF}}''' - ]
* '''{{COL}}''' - ]
* '''{{COD}}''' - ]
* '''{{HTI}}''' - ]
* '''{{IND}}''' - ]
* '''{{IRN}}''' - ]
* '''{{JOR}}''' - ]
* '''{{MTN}}''' - ]
* '''{{MDA}}''' - ]
* '''{{PSE}}''' - ]
* '''{{TUR}}''' - ]
* '''{{YEM}}''' - ]


==Logo==
== Fraternal organisations ==
The logo is the ], based on the 1977 design by ] for the ], itself a variant of the logo drawn by Marc Bonnet for the French ] in 1969. Variants of the emblem are or were used by several SI member parties.<ref name="Graffica">{{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}}</ref>
*]
*]
*]


==Presidents, honorary presidents and secretaries general==
== Associated organisations ==
===Presidents===
*]
*{{as of|2023}}, there have been a total of 9 Socialist International presidents.
*]
{| class="wikitable sortable sticky-header" style=text-align:center;
*]
! scope=col rowspan="2" | {{Abbr|No.|Number}}
*]
! scope=col rowspan="2" | Portrait
*]
! scope=col rowspan="2" | Name
*]
! scope=col rowspan="2" | Country
*]
! scope=col rowspan="2" | Party
*]
! scope=col rowspan="2" class=unsortable | Term
*]
! scope=col rowspan="2" | Tenure
*]
! scope=col colspan="2" | Vice-President
|-
! scope=col | Name
! scope=col | Country
|-
! scope=row | 1
|
| ''']'''<br/>{{small|(1902–1963)}}
| {{Flag|United Kingdom}}
| ]
| 1951<br/>–<br/>1957
| {{ay|1951|1957}} years
|-
! scope=row | 2
| ]
| ''']'''<br/>{{small|(1893–1962)}}
| {{Flag|Denmark}}
| ]
| 1957<br/>–<br/>1962
| {{ay|1957|1962}} years
|-
! scope=row | 3
| ]
| ''']'''<br/>{{small|(1901–1963)}}
| {{Flag|West Germany}}
| ]
| 1963–1963
| <1 year
|-
! scope=row | 4
| ]
| ''']'''<br/>{{small|(1905–1983)}}
| {{Flag|Austria}}
| ]
| 1964<br/>–<br/>1976
| {{ay|1964|1976}} years
|-
! scope=row | 5
| ]
| ''']'''<br/>{{small|(1913–1992)}}
| {{Flag|West Germany}}
| ]
| 1976<br/>–<br/>1992
| {{ay|1976|1992}} years
|-
! scope=row | 6
| ]
| ''']'''<br/>{{small|(1928–2013)}}
| {{Flag|France}}
| ]
| 17 September 1992<br/>–<br/>10 November 1999
| {{ayd|1992|9|17|1999|11|10}}
|-
! scope=row | 7
| ]
| ''']'''<br/>{{small|({{Abbr|b.|born in}} 1949)}}
| {{Flag|Portugal}}
| ]
| 10 November 1999<br/>–<br/>15 June 2005
| {{ayd|1999|11|10|2005|6|15}}
|-
! scope=row | 8
| ]
| ''']'''<br/>{{small|({{Abbr|b.|born in}} 1952)}}
| {{Flag|Greece}}
| ] / ]
| 30 January 2006<br/>–<br/>25 November 2022
| {{ayd|2006|1|30|2022|11|26}}
|-
! scope=row | 9
| ]
| ''']'''<br/>{{small|({{Abbr|b.|born in}} 1972)}}
| {{Flag|Spain}}
| ]
| 25 November 2022<br/>–<br/>''Incumbent''
| {{ayd|2022|11|26}}
| ]
| {{Flag|Kyrgyzstan}}
|}


===Honorary presidents===
== See also ==
Current and honorary presidents include:<ref>{{cite web|title=Honorary Presidents of the Socialist International|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=1951|publisher=Socialist International}}</ref>
*]
*], Tunisia
*]
*], Brazil
*], Puerto Rico
*], Belgium
*], Mexico
*], Morocco
*], Peru
*], Sweden
*], Israel
*], Finland
*], Niger
*], Denmark
*], France
*], United Kingdom
*], Colombia
*], Chile
*], Portugal
*], Germany


===Secretaries general===
== References ==
]
{{reflist}}
*], Austria (1951–1956)
*Bjarne Braatoy, Norway (1956–1957)
*Albert Carthy, United Kingdom (1957–1969)
*], Austria (1969–1976)
*], Sweden (1976–1983)
*], Finland (1983–1989)
*], Chile (1989–2022)
*], Ghana (since 2022)


== External links == == Summits ==
* 1951 (Ist): ], West Germany.
*
* 1952 (IInd): ], Italy.
* 1953 (IIIrd): ], Sweden.
* 1955 (IVth): ], United Kingdom.
* 1957 (Vth): ], Austria.
* 1959 (VIth): ], West Germany.
* 1961 (VIIth): ], Italy.
* 1963 (VIIIth): ], Netherlands.
* 1964 (IXth): ], Belgium.
* 1966 (Xth): ], Sweden.
* 1969 (XIth): ], United Kingdom.
* 1972 (XIIth): ], Austria (2nd time).
* 1976 (XIIIth): ], Switzerland.
* 1978 (XIVth): ], Canada.
* 1980 (XVth): ], Spain.
* 1983 (XVIth): ], Portugal.
* 1986 (XVIIth): ], Peru.
* 1989 (XVIIIth): ], Sweden (2nd time).
* 1992 (XIXth): ], Germany.
* 1996 (XXth): ], United States.
* 1999 (XXIst): ], France.
* 2003 (XXIInd): ], Brazil.
* 2008 (XXIIIrd): ], Greece.
* 2012 (XXIVth): ], South Africa.
* 2017 (XXVth): ], Colombia.
* 2022 (XXVIth): ], Spain (2nd time).


==Members==


===Full members===
<!--Categories-->
There are 92 full members:<ref name=members>{{cite web|title=Member Parties|url=http://www.socialistinternational.org/viewArticle.cfm?ArticlePageID=931|publisher=Socialist International}}</ref><ref name=broadleft>{{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}}</ref>
]<!--Keep with index at start of list (eponymous category)-->
{|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}} || ]<ref>{{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=]}}</ref><ref>{{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}}</ref>{{sfn|Lamb|Docherty|2006|p=323}} || PS || {{yes2}} ] || Admitted as consultative member in 1999.<ref name=xxi>{{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}}</ref>{{sfn|Lamb|Docherty|2006|p=323}} Promoted to full member in 2003.<ref name=xxii>{{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}}</ref>
| colspan="2" |{{Composition bar|74|140|{{party color|Socialist Party of Albania}}|per=1}}
|-
|| {{ALG}} || ]<ref>{{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}}</ref><ref>{{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}}</ref>{{sfn|Lamb|Docherty|2006|p=319}} || FFS || {{no2}} ] || Admitted as consultative member in 1992.<ref name=xix>{{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}}</ref> Promoted to full member in 1996.<ref name=xx>{{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}}</ref>{{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}} || ]<ref>{{cite web|title=Benvinguts|url=http://www.partitsocialdemocrata.com/?page_id=8|publisher=]|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}}</ref>{{sfn|Lamb|Docherty|2006|p=311}} || PS || {{no2}} ] || Promoted to full member in 2003.<ref name=xxii/>{{sfn|Lamb|Docherty|2006|p=311}}
| colspan="2" |{{Composition bar|3|28|{{party color|Social Democratic Party (Andorra)}}|per=1}}
|-
|| {{AGO}} || ]{{sfn|Lamb|Docherty|2006|p=270}} || MPLA || {{yes2}} ] || Admitted as observer member in 1996.<ref name=xx/> Promoted to full member in 2003.<ref name=xxii/>{{sfn|Lamb|Docherty|2006|p=270}}
| colspan="2" |{{Composition bar|124|220|{{party color|MPLA}}|per=1}}
|-
|| {{ARG}} || ]{{sfn|Lamb|Docherty|2006|p=286}} || UCR || {{no2}} ] || Admitted as consultative member in 1996.<ref name=xx/> Promoted to full member in 1999.<ref name=xxi/>{{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}} || ]<ref>{{cite web|title=In the Socialist International|url=http://www.arfd.info/the-arf-d-and-the-socialist-international/|publisher=]|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}}</ref>{{sfn|Lamb|Docherty|2006|p=37}} || ARF || {{no2}} ] || Admitted (as Armenian Socialist Party) as observer member in 1996.<ref name=xx/>{{sfn|Lamb|Docherty|2006|p=37}} Promoted (as ASP) to consultative member in 1999.<ref name=xxi/> Promoted (as ASP) to full member in 2003.<ref name=xxii/>
| colspan="2" |{{Composition bar|10|107|{{party color|Armenian Revolutionary Federation}}|per=1}}
|-
|| {{BLR}} || ] || BSDP || {{no2|}} ] || Admitted as observer member in 1999.<ref name=xxi/> Promoted to consultative member in 2003.<ref name=xxii/> Promoted to full member in November 2015.<ref name=November2015>{{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}}</ref> 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}} || ]<ref>{{cite web|title=L'Action Internationale|url=http://www.ps.be/Pagetype1/PS/Liens-utiles/L-Action-Internationale.aspx|publisher=]|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}}</ref> || PS || {{partial|]}} ||
|{{Composition bar|20|150|{{party color|Socialist Party (Belgium)}}|per=1}}
|{{Composition bar|7|60|{{party color|Socialist Party (Belgium)}}|per=1}}
|-
|| {{BOL}} || ] || UN || {{no2|}} ] || 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}} || ]<ref>{{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}}</ref>{{sfn|Lamb|Docherty|2006|p=311}} || SDP BiH || {{yes2|}} ] || Admitted as observer member in 1996.<ref name=xx/> Promoted to full member in 1999.<ref name=xxi/>{{sfn|Lamb|Docherty|2006|p=311}}<br />
|{{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}} || ]{{sfn|Lamb|Docherty|2006|p=101}} || PDT || {{partial|]}}|| Admitted as consultative member in 1986.<ref name=xvii>{{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}}</ref>{{sfn|Lamb|Docherty|2006|p=101}} Promoted to full member in 1989.{{sfn|Lamb|Docherty|2006|p=101}}<ref name=xviii>{{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}}</ref>
|{{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}} || ]{{sfn|Lamb|Docherty|2006|p=67}} || PBSD || {{no2}} ]
|
| colspan="2" |{{Composition bar|0|240|{{party color|Party of Bulgarian Social Democrats}}|per=1}}
|-
| ]{{sfn|Lamb|Docherty|2006|p=68}} || BSP || {{no2}} ] || Admitted as full member in 2003.<ref name=xxii/>{{sfn|Lamb|Docherty|2006|p=68}}
| colspan="2" |{{Composition bar|18|240|{{party color|Bulgarian Socialist Party }}|per=1}}
|-
|| {{BFA}} || ] || MPP || {{no2}} ] || Admitted as full member in 2016.<ref name="SI Member Parties in Government">{{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}}</ref>
| colspan="2" |{{Composition bar|0|127|{{party color|People's Movement for Progress}}|per=1}}
|-
|| {{CMR}} || ]{{sfn|Lamb|Docherty|2006|p=307}} || SDF || {{no2}} ] || Admitted as consultative member in 1996.<ref name=xx/> Promoted to full member in 1999.<ref name=xxi/>{{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}} || ]{{sfn|Lamb|Docherty|2006|p=25}} || PAICV || {{no2}} ] || Admitted as consultative member in 1992.<ref name=xix/> Promoted to full member in 1996.<ref name=xx/>{{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}}
|]
|MLPC|| {{no2}} ]
|Admitted as observer member in 2008.<ref name="xxiii" /> 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}}
|]
|UNDR|| {{no2}} ]
|Admitted as observer member in June/July 2014.<ref name="JuneJuly2014SICouncil" /> 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}} || ]{{sfn|Lamb|Docherty|2006|p=265}} || PPD || {{partial|]}} || Admitted as consultative member in 1992.<ref name=xix/> Promoted to full member in 1996.<ref name=xx/>{{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}}
|-
| ]{{sfn|Lamb|Docherty|2006|p=314}} || PRSD || {{partial|]}} ||
|{{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}}
|-
| ]{{sfn|Lamb|Docherty|2006|p=325}} || PS || {{partial|]}} || Admitted as consultative member in 1992.<ref name=xix/> Promoted to full member in 1996.<ref name=xx/>{{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}} || ]{{sfn|Lamb|Docherty|2006|p=211}} || PLC || {{partial|}} ] || Admitted as consultative member in 1992.<ref name=xix/> Promoted to full member in 1999.<ref name=xxi/>{{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}} || ]{{sfn|Lamb|Docherty|2006|p=245}} || PLN || {{no2}} ] || 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}} || ]<ref>{{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}}</ref>{{sfn|Lamb|Docherty|2006|p=312}} || SDP || {{no2}} ] || Admitted as full member in 1999.<ref name=xxi/>{{sfn|Lamb|Docherty|2006|p=312}}
| colspan="2" |{{Composition bar|37|151|{{party color|Social Democratic Party of Croatia}}|per=1}}
|-
|| {{CYP}} || ]<ref>{{cite web|title=Movement for Social Democracy|url=http://www.edek.org.cy/|publisher=]}}</ref>{{sfn|Lamb|Docherty|2006|p=308}} || EDEK || {{partial| ]}} || Full member since 1987.{{sfn|Lamb|Docherty|2006|p=308}} Promoted to full member in 1992.<ref name=xix/>
| colspan="2" |{{Composition bar|3|56|{{party color|Movement for Social Democracy}}|per=1}}
|-
| rowspan="2"| {{flagicon|Cyprus}} {{flagicon|TRNC}} ] (])|| ] || CTP || {{no2}} ] || Admitted as consultative member in 2008 (pending consultation).<ref name=xxiii/> Promoted to full member in June/July 2014.<ref name=JuneJuly2014SICouncil>{{cite web|title=SI Council Meeting in Mexico City|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=2299|publisher=Socialist International}}</ref>
| colspan="2" |{{Composition bar|18|50|{{party color|Republican Turkish Party}}|per=1}}
|-
| ] || TDP || {{no2}} ] || Admitted as consultative member in November 2015.<ref name=November2015/> Promoted to full member in March 2017.
| colspan="2" |{{Composition bar|0|50|{{party color|Communal Democracy Party}}|per=1}}
|-
|| {{CZE}} || ]<ref>{{cite web|title=Our Party|url=http://www.cssd.cz/en/our-party/|publisher=]|url-status=dead|archive-url=https://web.archive.org/web/20120813071430/http://www.cssd.cz/en/our-party/|archive-date=13 August 2012}}</ref>{{sfn|Lamb|Docherty|2006|p=95}} || SOCDEM || {{no2|}}] ||
|{{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}}
|]
|UDPS|| {{yes2}} ]
|Admitted as observer member in 2003.<ref name="xxii" />
|{{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}} || ]{{sfn|Lamb|Docherty|2006|p=108}} || PRD || {{no2}} ] || 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}} || ]{{sfn|Lamb|Docherty|2006|p=87}} || CPDS || {{no2}} ] || Admitted as consultative member in 1996.<ref name=xx/> Promoted to full member in 1999.<ref name=xxi/>{{sfn|Lamb|Docherty|2006|p=87}}
| colspan="2" |{{Composition bar|0|100|{{party color|Convergence for Social Democracy (Equatorial Guinea)}}|per=1}}
|-
|| {{FIN}} || ] || SDP || {{no2}} ] ||
| colspan="2" |{{Composition bar|43|200|{{party color|Social Democratic Party of Finland}}|per=1}}
|-
|| {{FRA}} || ]<ref>{{cite web|title=L'internationale socialiste|url=http://www.parti-socialiste.fr/le-reseau-ps/internationale-socialiste|publisher=]|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}}</ref> || PS || {{no2}} ] ||
|{{Composition bar|63|577|{{party color|Socialist Party (France)}}|per=1}}
|{{Composition bar|66|348|{{party color|Socialist Party (France)}}|per=1}}
|-
|| {{GHA}} || ] || NDC || {{no2}} ] || Admitted as consultative member in 2003.<ref name=xxii/> Promoted to full member in 2008.<ref name=xxiii>{{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}}</ref>
| colspan="2" |{{Composition bar|137|275|{{party color|National Democratic Congress (Ghana)}}|per=1}}
|-
|| {{GRE}} || ] || PASOK-KINAL || {{no2}} ] || Full member since 1990.{{sfn|Lamb|Docherty|2006|p=262}}
| colspan="2" |{{Composition bar|32|300|{{party color|PASOK – Movement for Change}}|per=1}}
|-
|| {{GUA}} || ] || UNE || {{no2}} ] || Admitted as full member in 2008.<ref name=xxiii/>
| colspan="2" |{{Composition bar|28|160|{{party color|National Unity of Hope}}|per=1}}
|-
|| {{GUI}} || ]<ref>{{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}}</ref>{{sfn|Lamb|Docherty|2006|p=148}} || RPG || {{no2}} ] || Admitted (as Guinean People's Assembly) as consultative member in 1999.<ref name=xxi/> Promoted (as GPA) to full member in 2003.<ref name=xxii/>{{sfn|Lamb|Docherty|2006|p=148}}
| colspan="2" |{{Composition bar|1|81|{{party color|Rally of the Guinean People}}|per=1}}
|-
| rowspan="2"| {{HAI}} || ]{{sfn|Lamb|Docherty|2006|p=351}} || PFSDH || {{no2}} ] || 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}} ]
|Admitted as full members in 2018<ref>{{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}}</ref>
|{{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}} || ]<ref>{{cite web|title=A Magyar Szocialista Párt…|url=http://mszp.hu/bemutatkozas|publisher=]|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}}</ref>{{sfn|Lamb|Docherty|2006|p=158}} || MSzP || {{no2}} ] || Admitted as observer member in 1992.<ref name=xix/>{{sfn|Lamb|Docherty|2006|p=158}} Promoted to full member in 1996.<ref name=xx/>
| colspan="2" |{{Composition bar|10|199|{{party color|Hungarian Socialist Party}}|per=1}}
|-
|| {{IND}} || ] || INC || {{no2}} ] || Originally joined in 1993.<ref name="Sheffer1993">{{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}}</ref> Readmitted as full member December 2014.<ref name=December2014SICouncil>{{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}}</ref>
|{{Composition bar|99|543|{{party color|Indian National Congress}}|per=1}}
|{{Composition bar|27|245|{{party color|Indian National Congress}}|per=1}}
|-
|| {{IRQ}} || ] || PUK || {{partial|}} ] || Admitted as observer member in 2003.<ref name=xxii/> Promoted to full member in 2008.<ref name=xxiii/>
| colspan="2" |{{Composition bar|17|329|{{party color|Patriotic Union of Kurdistan}}|per=1}}
|-
|| {{ISR}} || ]<ref name=israel>https://www.socialistinternational.org/about-us/members/</ref>{{sfn|Lamb|Docherty|2006|p=308}} || הדמוקרטים|| {{no2}} ] ||2024 merger of the ] and ].
| colspan="2" |{{Composition bar|4|120|hex={{party color|The Democrats (Israel)}}}}
|-
|| {{ITA}} || ] || PSI || {{no2}} ] ||
|{{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}} || ]{{sfn|Lamb|Docherty|2006|p=271}} || PNP || {{no2}} ] || Full member since 1952.{{sfn|Lamb|Docherty|2006|p=271}} Temporarily demoted to observer member in 2012 due to non-payment of membership fees.<ref name=members/>
|{{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}} || ]{{sfn|Lamb|Docherty|2006|p=186}} || SDP || {{no2}} ] || Full member since 1951 as the ].{{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}} || ] || JSDP || {{no2}} ] || Admitted as consultative member in 2012.<ref name="xxiv" /> Promoted to full member in November 2015.<ref name="November2015" />
| colspan="2" |{{Composition bar|4|98|{{party color|Nationwide Social Democratic Party}}|per=1}}
|-
|| {{flag|Kyrgyzstan}} || ]|| SDK || {{no2}} ] || Legal successor to the Social Democratic Party of Kyrgyzstan.
| colspan="2" |{{Composition bar|1|90|{{party color|Social Democrats (Kyrgyzstan)}}|per=1}}
|-
|| {{LBN}} || ]{{sfn|Lamb|Docherty|2006|p=283}}|| PSP || {{no2}} ] || Full member since 1980.{{sfn|Lamb|Docherty|2006|p=283}}
| colspan="2" |{{Composition bar|8|128|{{party color|Progressive Socialist Party}}|per=1}}
|-
|| {{LTU}} || ]{{sfn|Lamb|Docherty|2006|p=214}}|| LSDP || {{yes2|}} ] || 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}}
|]<ref>{{cite web|url=http://www.lsap.lu/lsap_Lsap-aujourdhui.124-2.html|title=LSAP aujourd'hui|publisher=]|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}}</ref>{{sfn|Lamb|Docherty|2006|p=217}}
|| LSAP/POSL|| {{partial|}} ] || 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}} || ]{{sfn|Lamb|Docherty|2006|p=29}} || ADEMA-PASJ || {{no2|}} ] || Admitted as consultative member in 1996.<ref name="xx" /> Promoted to full member in 1999.<ref name="xxi" />{{sfn|Lamb|Docherty|2006|p=29}} Promoted to full member in 2008.<ref name="xxiii" /> Status unclear following the ].
| colspan="2" |{{Composition bar|24|147|{{party color|Alliance for Democracy in Mali}}|per=1}}
|-
| ]|| RPM || {{no2|}} ] || Admitted as consultative member in 2003.<ref name=xxii/> Status unclear following the ].
| colspan="2" |{{Composition bar|51|147|{{party color|Rally for Mali}}|per=1}}
|-
|| {{MLT}}||]{{sfn|Lamb|Docherty|2006|p=220}}|| PL || {{yes2}} ] || Full member since 1955, leading to the entire party being ] by the Catholic Church in 1961.{{sfn|Lamb|Docherty|2006|p=220}}<ref>{{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}}</ref> Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Delisted in December 2014. Rejoined in 2025.<ref>{{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}}</ref>
| colspan="2" |{{Composition bar|43|79|{{party color|Labour Party (Malta)}}|per=1}}
|-
|| {{MRT}} || ]|| RFD || {{no2}} ] || Admitted as observer member in 2003.<ref name="xxii" /> Promoted to full member in 2008.<ref name="xxiii" />
| colspan="2" |{{Composition bar|0|176|{{party color|Rally of Democratic Forces}}|per=1}}
|-
| rowspan="2" | {{MUS}} || ]{{sfn|Lamb|Docherty|2006|p=230}}|| PTR || {{yes2}} ] || Full member since 1969.{{sfn|Lamb|Docherty|2006|p=230}}
| colspan="2" |{{Composition bar|35|66|{{party color|Labour Party (Mauritius)}}|per=1}}
|-
| ]{{sfn|Lamb|Docherty|2006|p=229}}|| MMM || {{yes2}} ] || Admitted as consultative member in 1996.<ref name=xx/> Promoted to full member in 2003.<ref name=xxii/>{{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}} || ]{{sfn|Lamb|Docherty|2006|p=167}}|| PRI || {{no2}} ] || Admitted as consultative member in 1996.<ref name="xx" /> Promoted to full member in 2003.<ref name="xxii" />{{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}} || ]<ref>{{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}}</ref>|| PSDE || {{no2|}} ] || Admitted as consultative member in 2008.<ref name="xxiii" /> Promoted to full member in 2012.<ref name="xxiv">{{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}}</ref><br />Part of ].
| colspan="2" |{{Composition bar|0|101|{{party color|European Social Democratic Party}}|per=1}}
|-
|| {{MNG}} || ]<ref>{{cite web|title=Party History|url=http://mpp.mn/en/page/detail/name/Party+History|publisher=]|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}}</ref>{{sfn|Lamb|Docherty|2006|p=238}}|| MPP || {{yes2}} ] || Admitted (as ]) as observer member in 1999.<ref name="xxi" />{{sfn|Lamb|Docherty|2006|p=238}}<br />Promoted (as Mongolian People's Revolutionary Party) to full member in 2003.<ref name="xxii" />{{sfn|Lamb|Docherty|2006|p=238}}
| colspan="2" |{{Composition bar|62|76|{{party color|Mongolian People's Party}}|per=1}}
|-
| rowspan="2" | {{MNE}} || ]<ref name="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}}</ref>|| DPS || {{no2}} ] || Admitted as consultative member in 2003.<ref name="xxii" /> Promoted to full member in 2008.<ref name="xxiii" />
| colspan="2" |{{Composition bar|17|81|{{party color|Democratic Party of Socialists of Montenegro}}|per=1}}
|-
| ]<ref name="montenegro" /><ref>{{cite web|title=Socijalistička internacionala |url=http://www.sdp.co.me/SocijalistickaInternacionala|publisher=]|language=cnr |archive-url=https://web.archive.org/web/20140221171744/http://www.sdp.co.me/SocijalistickaInternacionala |archive-date=21 February 2014}}</ref>{{sfn|Lamb|Docherty|2006|p=313}}|| SDP || {{no2}} ] || Admitted as observer member in 1996.<ref name=xx/> Promoted to consultative member in 1999.<ref name=xxi/> Promoted to full member in 2003.<ref name=xxii/>{{sfn|Lamb|Docherty|2006|p=313}}<br />
| colspan="2" |{{Composition bar|0|81|{{party color|Social Democratic Party of Montenegro}}|per=1}}
|-
|| {{MAR}} || ]<ref>{{cite web|title=Relations internationales|url=http://www.usfp.ma/international.php|publisher=]|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}}</ref><ref>{{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}}</ref>{{sfn|Lamb|Docherty|2006|p=328}}|| USFP || {{no2}} ] || Promoted to full member in 1992.<ref name="xix" />
|{{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}} || ]{{sfn|Lamb|Docherty|2006|p=132}}|| FRELIMO || {{yes2}} ] || Admitted as consultative member in 1996.<ref name="xx" /> Promoted to full member in 1999.<ref name="xxi" />
| colspan="2" |{{Composition bar|184|250|{{party color|FRELIMO}}|per=1}}
|-
|| {{NAM}} || ]|| SWAPO || {{yes2}} ] || Promoted to full member in 2008.<ref name="xxiii" />
|{{Composition bar|63|96|{{party color|SWAPO}}|per=1}}
|{{Composition bar|28|42|{{party color|SWAPO}}|per=1}}
|-
|| {{NEP}} || ]<ref>{{cite web |title=Introduction|url=http://www.nepalicongress.org/index.php?linkId=2|publisher=]}}</ref>{{sfn|Lamb|Docherty|2006|p=250}}|| NC || {{no2}} ] || Admitted as consultative member in 1989.<ref name="xviii" /> Promoted to full member in 1999.<ref name="xxi" />{{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}} || ]{{sfn|Lamb|Docherty|2006|p=267}}|| PNDS || {{no2}} ] || Admitted as consultative member in 1996.<ref name="xx" /> Promoted to full member in 2003.<ref name="xxii" />{{sfn|Lamb|Docherty|2006|p=267}} Status unclear following the ].
| colspan="2" |{{Composition bar|79|171|{{party color|Nigerien Party for Democracy and Socialism}}|per=1}}
|-
|| {{PAK}} || ]{{sfn|Lamb|Docherty|2006|p=267}}|| PPP || {{partial|]}} || Admitted as consultative member in 1989.<ref name="xviii" /> Promoted to full member in 2003.<ref name="xxii" />{{sfn|Lamb|Docherty|2006|p=261}}
|{{Composition bar|0|336|{{party color|Pakistan People's Party}}|per=1}}
|{{Composition bar|20|100|{{party color|Pakistan People's Party}}|per=1}}
|-
|| {{flag|Palestine}} || ]<ref>{{cite news|title=Fatah becomes member of Socialist International|url=http://www.maannews.net/eng/ViewDetails.aspx?ID=401555|newspaper=]|date=2 July 2011|access-date=14 July 2012|archive-date=8 January 2015|archive-url=https://web.archive.org/web/20150108232434/http://www.maannews.net/eng/ViewDetails.aspx?ID=401555|url-status=dead}}</ref><ref name="palestine">{{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}}</ref>|| || {{yes2}} ] || Admitted as observer member in 1996.<ref name="xx" /> Promoted to consultative member in 1999.<ref name="xxi" /><br />Promoted to full member in 2012.<ref name="xxiv" />
| colspan="2" |{{Composition bar|45|132|{{party color|Fatah}}|per=1}}
|-
|| {{PAN}} || ]{{sfn|Lamb|Docherty|2006|p=290}}|| PRD || {{yes2}} ] || Admitted as consultative member in 1986.<ref name="xvii" />{{sfn|Lamb|Docherty|2006|p=290}} Admitted as consultative member in 1996.<ref name="xx" /> Promoted to full member in 2003.<ref name="xxii" />
| colspan="2" |{{Composition bar|35|71|{{party color|Democratic Revolutionary Party}}|per=1}}
|-
|| {{PRY}} || ]|| PDP || {{no2}} ] || Admitted as consultative member in 2008.<ref name="xxiii" /> Promoted to full member in November 2015.<ref name="November2015" />
|{{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}} || ]{{sfn|Lamb|Docherty|2006|p=273}}|| PAP || {{no2}} ] || Promoted to full member in 1999.<ref name="xxi" />
| colspan="2" |{{Composition bar|0|130|{{party color|American Popular Revolutionary Alliance}}|per=1}}
|-
|{{PHL}}
|]
|PDSP|| {{no2}} ]
|Admitted as consultative member in 1992.<ref name="xix" /> Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> 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}} || ]{{sfn|Lamb|Docherty|2006|p=280}} || PS || {{no2}} ] ||
| colspan="2" |{{Composition bar|78|230|{{party color|Socialist Party (Portugal)}}|per=1}}
|-
|| {{PUR}} || ]{{sfn|Lamb|Docherty|2006|p=285}}|| PIP || {{no2}} ] || Consultative member in 1987, full member in 1994.{{sfn|Lamb|Docherty|2006|p=285}} Promoted to full member in 1992.<ref name="xix" />
|{{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}} || ]<ref>{{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=]|language=ro}}</ref>{{sfn|Lamb|Docherty|2006|p=293}}|| PSD || {{yes2}} ] || Admitted as consultative member in 1996.<ref name="xx" /> Promoted to full member in 1999.<ref name="xxi" /> ] admitted as consultative member in 1992, full member in 2001.{{sfn|Lamb|Docherty|2006|p=293}} Admitted as full member in 2003.<ref name="xxii" /> Both parties merged into ] 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}} || ]{{sfn|Lamb|Docherty|2006|p=267}}|| PSD || {{partial|}} ] || 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}} || ]<ref>{{cite web|title=Le Parti en bref|url=http://www.ps-senegal.com/historique/le-parti-en-bref|publisher=]|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}}</ref>{{sfn|Lamb|Docherty|2006|p=326}}|| PS || {{partial|}} ] || Full member since the 1970s.{{sfn|Lamb|Docherty|2006|p=326}} Boycotted ].
| colspan="2" |{{Composition bar|0|150|{{party color|Socialist Party of Senegal}}|per=1}}
|-
|| {{SVK}} || ]{{sfn|Lamb|Docherty|2006|p=107}}|| SMER-SD || {{yes2}} ] || Full member.{{sfn|Lamb|Docherty|2006|p=107}}
| colspan="2" |{{Composition bar|42|150|{{party color|Direction – Social Democracy}}|per=1}}
|-
|| {{ZAF}} || ]{{sfn|Lamb|Docherty|2006|p=24}}|| ANC || {{yes2}} ] || Admitted as full member in 1999.<ref name="xxi" />{{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}} || ]{{sfn|Lamb|Docherty|2006|p=336}}|| PSOE || {{yes2}} ] || 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}} || ]|| FDTL || {{n/a}} || Admitted as consultative member in 2003.<ref name="xxii" /> Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Promoted to full member in 2012.<ref name="xxiv" /> Boycotted the ].<ref>{{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}}</ref>
| colspan="2" |{{Composition bar|0|217|{{party color|Democratic Forum for Labour and Liberties}}|per=1}}
|-
|| {{TUR}} || ]<ref>{{cite web |title=European Union Representation|url=http://chpbrussels.org/|publisher=]}}</ref><ref>{{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}}</ref>{{sfn|Lamb|Docherty|2006|p=289}}|| CHP || {{no2}} ] || Took ]'s place in 1995.{{sfn|Lamb|Docherty|2006|p=289}}
| colspan="2" |{{Composition bar|128|600|{{party color|Republican People's Party}}|per=1}}
|-
|| {{URY}} || ]<ref>{{cite web|title=Nuevo Espacio|url=http://www.nuevoespacio.org.uy/partido/|publisher=]|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}}</ref>{{sfn|Lamb|Docherty|2006|p=253}}|| PNE || {{no2}} ] || Admitted as consultative member in 1999.<ref name="xxi" /> Promoted to full member in 2003.<ref name="xxii" />{{sfn|Lamb|Docherty|2006|p=253}}Party does not individually stand in elections but participates as part of the ].
|-
| rowspan="3" | {{VEN}} || ]|| UNT || {{no2}} ] || Admitted as consultative member in 2013.<ref name="feb2013">{{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}}</ref> Promoted to full member in November 2015.<ref name="November2015" />
| colspan="2" |{{Composition bar|0|277|{{party color|A New Era}}|per=1}}
|-
| ]<ref>{{cite web|title=Propuestas|url=http://acciondemocratica.org.ve/ad/portal/propuestas.php|publisher=]|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}}</ref>{{sfn|Lamb|Docherty|2006|p=100}}|| AD || {{no2}} ] || 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}}
|-
| ]|| VP || {{no2}} ] || Admitted as full member in December 2014.<ref name="December2014SICouncil" />
| colspan="2" |{{Composition bar|0|277|{{party color|Popular Will}}|per=1}}
|-
|| {{YEM}} || ]|| YSP || {{no2}} ] || Admitted as observer member in 2003.<ref name="xxii" /> Promoted to consultative member in 2008.<ref name="xxiii" /><br />Promoted to full member in 2012.<ref name="xxiv" />
| colspan="2" |{{Composition bar|8|301|{{party color|Yemeni Socialist Party}}|per=1}}
|}


===Consultative parties===
<!--Other languages-->
There are 19 consultative parties:<ref name=members/><ref name=broadleft/>
{|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}} || ] || BDP || {{no2}} ] || Admitted as consultative member in June/July 2014.<ref name=JuneJuly2014SICouncil/>
| colspan="2" |{{Composition bar|4|61|{{party color|Botswana Democratic Party}}|per=1}}
|-
|{{COD}}
|]
|PALU|| {{no2}} ]
|Admitted as observer member in December 2014.<ref name="December2014SICouncil" /> 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}}
|]
|MRD
| {{n/a}}
|Admitted as consultative members in 2019.
|-
|| {{flag|Eswatini}}||] || PUDEMO || {{n/a}} || Admitted as consultative member in 2013.<ref name=feb2013/> Political parties are banned in Eswatini.
|-
|| {{GAB}} || ] || PGP || {{n/a}} || Admitted as consultative member in 1996.<ref name=xx/>
| colspan="2" |{{Composition bar|0|143|{{party color|Gabonese Progress Party}}|per=1}}
|-
|| {{GMB}} || ] || UDP || {{no2}} ] || Admitted as consultative member in 2012.<ref name=xxiv/>
| colspan="2" |{{Composition bar|15|58|{{party color|United Democratic Party (The Gambia)}}|per=1}}
|-
|| {{GEO}} || ] || SDD || {{no2}} ] || Admitted as consultative member in 2013.<ref name=feb2013/>
| colspan="2" |{{Composition bar|0|150|{{party color|Social Democrats for the Development of Georgia}}|per=1}}
|-
|{{GHA}}
|]
|CPP
|{{no2}} ]
|Admitted as consultative member in 2018
| colspan="2" |{{Composition bar|0|275|{{party color|Convention People's Party}}|per=1}}
|-
|| {{GNB}} || ] || PAIGC || {{no2}} ] || Admitted as consultative member in 2008.<ref name=xxiii/>
| colspan="2" |{{Composition bar|47|102|{{party color|African Party for the Independence of Guinea and Cape Verde}}|per=1}}
|-
| rowspan="2"| {{IRN}} || ] || PDKI || {{n/a}} || Admitted as observer member in 1996.<ref name=xx/> Promoted to consultative member in 2008.<ref name=xxiii/> Officially banned in Iran.
|-
| ] || KPIK || {{n/a}} || Admitted as observer member in 2014<ref>{{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}}</ref> Promoted to consultative member in 2018<ref>{{Cite web |title=Geneva 2018 |url=https://www.socialistinternational.org/councils/geneva-2018/ |access-date=2022-05-09 |website=Socialist International |language=en}}</ref> Officially banned in Iran.
|-
| rowspan="2"| {{flag|Palestine}} || ]<ref name=palestine/> || PNI || {{no2}} ] || Admitted as observer member in 2008.<ref name=xxiii/> Promoted to consultative member in 2012.<ref name=xxiv/>
| colspan="2" |{{Composition bar|2|132|{{party color|Palestinian National Initiative}}|per=1}}
|-
|]
|PPSF
|{{partial|}} ]
|Admitted as consultative member in 2018.
| colspan="2" |{{Composition bar|0|132|{{party color|Palestinian Popular Struggle Front}}|per=1}}
|-
|| {{flag|Sahrawi Republic}} || ] || POLISARIO || {{yes2}} ] || Admitted as observer member in 2008.<ref name=xxiii/> Promoted to consultative member in 2017.<ref> ], 4 March 2017</ref><ref> Socialist International</ref>
| colspan="2" |{{Composition bar|51|51|{{party color|Polisario Front}}|per=1}}
|-
|| {{flag|São Tomé and Príncipe}} || ] || MLSTP/PSD || {{no2}}] || Admitted as consultative member in 2013.<ref name=feb2013/>
| colspan="2" |{{Composition bar|18|55|{{party color|Movement for the Liberation of São Tomé and Príncipe – Social Democratic Party}}|per=1}}
|-
|| {{flag|Syria}} || ] || PYD || {{no2}}] || Admitted as consultative member in November 2015.<ref name=November2015/>
| colspan="2" |{{Composition bar|0|250|{{party color|Democratic Union Party (Syria)}}|per=1}}
|-
|| {{TGO}} || ] || CDPA || {{no2}}] || Admitted as consultative member in 1999.<ref name=xxi/>
| colspan="2" |{{Composition bar|0|91|{{party color|Democratic Convention of African Peoples}}|per=1}}
|-
|| {{UKR}} || ]<ref>{{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}}</ref> || SDPU || {{no2}}] || Admitted as consultative member in 2003.<ref name=xxii/>
| colspan="2" |{{Composition bar|0|450|{{party color|Social Democratic Party of Ukraine}}|per=1}}
|}

===Observer parties===
There are eight observer parties:<ref name=members/><ref name=broadleft/>
{|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}} || ] || SWADEPA || {{n/a}} || Admitted as observer member in June/July 2014.<ref name=JuneJuly2014SICouncil/>
|-
|| {{IRL}} || ]<ref>{{cite web|title=International Solidarity|url=http://www.labour.ie/party/international/|publisher=]|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}}</ref>{{sfn|Lamb|Docherty|2006|p=180}} || || {{no2}} ] ||
|-
|| {{KEN}} || Labour Party of Kenya || || || Admitted as observer member in 2012.<ref name=xxiv/>
|-
|| {{KOS}} || ] || VV || {{yes2}} ] || Admitted as observer member in 2018.
|-
|| {{flagcountry|Lesotho}} || ] || LCD || {{partial|]}} || Admitted as observer member in June/July 2014.<ref name=JuneJuly2014SICouncil/>
|-
|| {{flagcountry|Serbia}} || ] || SDPS || {{partial|]}} || Admitted as observer member in 2018.
|-
|| {{flagcountry|Somaliland}} || ] || JWP || {{no2}} ] || Admitted as observer member in 2013<ref>{{Cite web |title=Istanbul 2013 |url=https://www.socialistinternational.org/councils/istanbul-2013/ |access-date=2022-05-09 |website=Socialist International |language=en}}</ref>
|-
|| {{UK}} || ]{{sfn|Lamb|Docherty|2006|p=63}} || || {{yes2}} ] || Member since 1951.{{sfn|Lamb|Docherty|2006|p=63}} Currently holds a majority in Westminster, following the ]. ] is ] ] and ] ] the ]. 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."<ref>Black, Ann. (6 February 2013) . Left Futures. Retrieved on 15 July 2013.</ref> The request was accepted later that year.
|-
|| {{UK}} (]) ||]<ref>{{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=]}}</ref>{{sfn|Lamb|Docherty|2006|p=305}} || SDLP || {{no2}} ] || Admitted 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}} || ]{{sfn|Lamb|Docherty|2006|p=27}} || PSD || Admitted as consultative member in 1992.<ref name=xix/> Promoted to full member in 1996.<ref name=xx/>{{sfn|Lamb|Docherty|2006|p=27}} Demoted to observer member in 2012 due to non-payment of membership fees.<ref name=members/> Delisted in December 2014.
|-
|{{flag|Algeria}}
|]|| FLN ||Expelled following the ].
|-
|| {{AND}}||]|| ND || Admitted as consultative member in 1999.<ref name="xxi" />
|-
|| {{ATG}}||]|| ALP || Admitted as consultative member in 2008.<ref name="xxiii" />
|-
| rowspan="2"| {{ARG}}||]|| PSP || Admitted as full member in 1992.<ref name="xix" /> Merged with the ] to form the ].
|-
|]<ref>{{cite web|url=http://www.partidosocialista.com.ar/PS/seccion.php?go=ps&t=h|title=Historia del Partido Socialista|publisher=]|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}}</ref>{{sfn|Lamb|Docherty|2006|p=35}} || PS || Full member since 1951.{{sfn|Lamb|Docherty|2006|p=35}}
|-
|{{AZE}}
|]
|ASDP
|Admitted as observer member in 1996.<ref name="xx" /> Promoted to consultative member in 2003.<ref name="xxii" /> Readmitted as consultative member in June/July 2014.<ref name="JuneJuly2014SICouncil" /> Admitted as full member in 2016.<ref name="SI Member Parties in Government" /> Party dissolved in 2023.<ref>{{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}}</ref>
|-
|| {{ARU}}||]{{sfn|Lamb|Docherty|2006|p=270}}|| MEP || Promoted to full member in 1992.<ref name="xix" /> Full member since 1994.{{sfn|Lamb|Docherty|2006|p=270}} Delisted in December 2014.
|-
|| {{AUS}}||]{{sfn|Lamb|Docherty|2006|p=41}}|| ALP || Admitted as full member in 1966.{{sfn|Lamb|Docherty|2006|p=41}} Delisted in December 2014.
|-
|| {{AUT}} || ] || SPÖ || Admitted as a full member in 1951.{{sfn|Lamb|Docherty|2006|p=44}} Delisted in 2022.
|-
|| {{BAR}}||]{{sfn|Lamb|Docherty|2006|p=46}}|| BLP || Admitted as full member in 1987.{{sfn|Lamb|Docherty|2006|p=46}} Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Delisted in December 2014.
|-
| rowspan="2"| {{BEL}}||]|| PSB/BSP || Founder member. Split in 1978.
|-
|]|| || Delisted in 2017.
|-
| rowspan="2"| {{BEN}}|| Democratic Union of Progressive Forces || UDFP || Admitted as observer member in 1992.<ref name="xix" />
|-
|]{{sfn|Lamb|Docherty|2006|p=310}}
|PSD|| Admitted as consultative member in 1999.<ref name="xxi" />{{sfn|Lamb|Docherty|2006|p=310}} Promoted to full member in 2003.<ref name="xxii" />{{sfn|Lamb|Docherty|2006|p=310}}
|-
|| {{BIH}}||]|| SNSD || Admitted as consultative member in 2003.<ref name="xxii" /> Promoted to full member in 2008<ref name="xxiii" /> Expelled in August 2012.<ref name="xxiv" />
|-
|| {{BWA}}||]|| BNF || Admitted as observer member in 1996.<ref name="xx" />
|-
|| {{BOL}}||]{{sfn|Lamb|Docherty|2006|p=241}}|| MIR || Admitted as consultative member in 1986.<ref name="xvii" /> Consultative member in 1987.{{sfn|Lamb|Docherty|2006|p=241}} Promoted to full member in 1992.<ref name="xix" />{{sfn|Lamb|Docherty|2006|p=241}}
|-
|| {{BUL}}||]|| BEL<ref name="Bugajski2002">{{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–}}</ref>|| Admitted as observer member in 1999.<ref name="xxi" />
|-
|| {{BUR}}||]{{sfn|Lamb|Docherty|2006|p=265}}|| PDP/PS || Admitted as full member circa 1995.{{sfn|Lamb|Docherty|2006|p=265}} Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Delisted in December 2014.
|-
|| {{BDI}}||]|| FRODEBU || Admitted as consultative member in 2003.<ref name="xxii" /> Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /><br /> Delisted in December 2014.
|-
|| {{flag|Canada|1957}}||]|| CCF || Became the ] in 1961.
|-
|| {{CAN}}||]{{sfn|Lamb|Docherty|2006|p=251}}|| NDP/NPD || Delisted in 2018.<ref>{{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}}</ref>{{Failed verification|date=July 2020}}
|-
|| {{CAF}}|| Movement for Democracy and Social Progress || MDPS || Admitted as observer member in 1992.<ref name="xix" />
|-
|| {{IRN}} || ] || KDP || Admitted as a full member in November 2015.<ref name=November2015/> Party dissolved in 2022.<ref>{{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}}</ref>
|-
|| {{flag|Kyrgyzstan}} || ] || SDPK || Promoted to full member in June 2018. Party dissolved in 2020.|<ref>{{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}}</ref>
|-
|| {{CIV}}||]{{sfn|Lamb|Docherty|2006|p=184}}|| FPI || Admitted as consultative member in 1992.<ref name="xix" /> Promoted to full member in 1996.<ref name="xx" />{{sfn|Lamb|Docherty|2006|p=184}} Expelled in March 2011.<ref name="SI190311">{{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}}</ref>
|-
| rowspan="2"| {{COL}}||]|| PDA || Former observer member. Delisted in December 2014.
|-
|]|| AD/M-19 || Admitted as observer member in 1992.<ref name="xix" />
|-
|| {{CUW}}||]|| MAN || Promoted to full member in 1989.<ref name="xviii" /> Delisted in 2017.
|-
|| {{DEN}}||]|| SD || Founding member. Withdrew in 2017.
|-
|| {{DMA}}||]|| DLP || Admitted as consultative member in 1996.<ref name="xx" /> Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Delisted in December 2014.
|-
|| {{ECU}}||]{{sfn|Lamb|Docherty|2006|p=102}}|| PID || Member since 1987.{{sfn|Lamb|Docherty|2006|p=102}} Delisted in 2017.
|-
| rowspan="2" |{{EGY}}
|]|| ESDP (or HMDI in ])|| Admitted as consultative member in 2012.<ref name="xxiv" /> Promoted to full member in November 2015.<ref name="November2015" /> Delisted in 2019 due to non-payment of membership fees.
|-
|]{{sfn|Lamb|Docherty|2006|p=245}}|| NDP || Admitted as full member in 1989.<ref name="xviii" /> Full member since 1992.{{sfn|Lamb|Docherty|2006|p=245}} Expelled in January 2011.<ref name="SI310111">{{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}}</ref><ref>{{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=]|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}}</ref><ref>{{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=]|date=4 February 2011}}</ref>
|-
|| {{ELS}}|| Democratic Party || PD || Admitted as observer member in 1996.<ref name="xx" />
|-
|| {{EST}}||]<ref>{{cite web|title=History|url=http://www.sotsdem.ee/en/sotsidest/history/|publisher=]|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}}</ref><ref name="hdos119">{{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}}</ref>|| SDE || Member since 1990.<ref name="hdos119" /> Withdrew in 2017.
|-
|| {{FIJ}}||]|| FLP || Admitted as consultative member in 1992.<ref name="xix" /> Expelled in 2008, due to the party's participation in a government issued from a ].<ref name="xxiii" />
|-
|| {{FRA}}||]|| SFIO || Founding member. Member in 1951–1969.
|-
|| {{GEO}}||]|| CUG || Admitted as observer member in 1996.<ref name="xx" /> Party disbanded in 2003.
|-
|| {{GER}}||]|| SPD || Founding member. Withdrew in 2017.
|-
|| {{GRL}}||]|| || Admitted as consultative member in 1986.<ref name="xvii" /> Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Delisted in December 2014.
|-
|| {{GUA}}|| Social Democratic Convergence{{sfn|Lamb|Docherty|2006|p=306}}|| CSD || Admitted as consultative member in 2003.<ref name="xxii" />{{sfn|Lamb|Docherty|2006|p=306}}
|-
| rowspan="3"| {{HAI}}|| Party of the National Congress of Democratic Movements || KONAKOM || Admitted as consultative member in 1992.<ref name="xix" /> Promoted to full member in 1996.<ref name="xx" />
|-
|] ||OPL || Admitted (as Lavalas Political Organisation) as observer member in 1996.<ref name="xx" />
|-
| Revolutionary Progressive Nationalist Party || PANPRA || Admitted as consultative member in 1989.<ref name="xviii" /> Promoted to full member in 1992.<ref name="xix" />
|-
|{{HUN}}
|]
|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}}||]|| A || Member since 1987.{{sfn|Lamb|Docherty|2006|p=160}} Formed ] in 2000.
|-
|]|| S || Withdrew in 2017.
|-
|| {{IRN}}||]|| || Joined in 1960.<ref>{{citation|title=Iran Almanac and Book of Facts|issue=5|publisher=Echo of Iran|year=1966|edition=5th|page=240|chapter=Socialist League}}</ref> It was dissolved in 1980s.
|-
|rowspan="2"| {{ISR}} || ]<ref name="israel"/>{{sfn|Lamb|Docherty|2006|p=308}} || Avoda || Until May 2020, it temporarily suspended membership in July 2018 over SI's adoption of ] policies.<ref>{{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 &#124; Jpost.com}}</ref>
|-
|]|| ||Merged with ] to form ] in 2024.
|-
| rowspan="4"| {{ITA}}||]|| PDS || Admitted as full member in 1992.<ref name="xix" /> Merged with others to form ] in 1998.
|-
|]{{sfn|Lamb|Docherty|2006|p=105}}|| DS || Full member since 1992 as ].{{sfn|Lamb|Docherty|2006|p=105}} Merged with other movements to form the ] in 2007. Listed as SI member until XXIV Congress in 2012.
|-
|]|| PSI || Party dissolved in 1994 and succeeded by the ] (who formed the ] in 1998 and resumed as the ] in 2007).
|-
|]|| PSDI ||Founding member. Party merged into the ] in 1998 (renamed into ] in 2007).
|-
| rowspan="2" | {{JAP}}||]|| DSP/Minsha-tō ||Admitted as SI member in 1961.<ref name="DochertyLamb2006">{{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–}}</ref> Merged with non-socialist movements to form the ] in 1994.
|-
|]|| JSP/Shakai-tō || Admitted as SI member in 1951.{{sfn|Lamb|Docherty|2006|p=186}} Refounded as the ] in 1996.
|-
|| {{JOR}}|| Jordanian Democratic Party of the Left || JDPL || Admitted as observer member in 2003.<ref name="xxii" />
|-
|| {{KGZ}}||]<ref>{{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}}</ref>|| || Admitted as observer member in 2008.<ref name="xxiii" />
|-
| rowspan="2"| {{LAT}}||]{{sfn|Lamb|Docherty|2006|p=203}}|| LSDSP || Full member since 1994.{{sfn|Lamb|Docherty|2006|p=203}} Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /><br /> Delisted in December 2014.
|-
|]|| SDPS || Admitted as consultative member in June/July 2014.<ref name="JuneJuly2014SICouncil" /> Withdrew in 2017.
|-
|| {{MKD}}||]<ref>{{cite web|title=International cooperation|url=http://www.sdsm.org.mk/Default.aspx?mId=83&lId=2|publisher=]|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}}</ref><ref>{{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}}</ref>{{sfn|Lamb|Docherty|2006|p=315}}|| SDSM || Admitted as observer member in 1996.<ref name="xx" /> Promoted to full member in 2003.<ref name="xxii" />{{sfn|Lamb|Docherty|2006|p=315}} Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Delisted in December 2014.
|-
|| {{MAD}}|| Party for National Unity || VITM || Admitted as consultative member in 1989.<ref name="xviii" />
|-
|| {{MYS}}||]<ref name="International Solidarity">{{cite web |title=International Solidarity|url=https://dapmalaysia.org/en/about-us/international-solidarity/|publisher=]}}</ref>{{sfn|Lamb|Docherty|2006|p=100}}|| DAP || Full member since 1987.{{sfn|Lamb|Docherty|2006|p=100}} Delisted in 2017.<ref name="International Solidarity" />
|-
|{{MEX}}
|]{{sfn|Lamb|Docherty|2006|p=268}}
|PRD|| Admitted as full member in 1996.<ref name="xx" />{{sfn|Lamb|Docherty|2006|p=268}}
|-
|| {{MDA}}||]|| PSDM || Admitted as observer member in 1996.<ref name="xx" />
|-
|| {{MNG}} || ]{{sfn|Lamb|Docherty|2006|p=238}} || MSDP || Admitted as consultative member in 1992.<ref name=xix/>{{sfn|Lamb|Docherty|2006|p=238}} Promoted to full member in 1996.<ref name=xx/> Merged with others in 2000 to form the ].
|-
|| {{NAM}}||]|| CoD || Admitted as consultative member in 2003.<ref name="xxii" /> Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Delisted in December 2014.
|-
|| {{NLD}}||]<ref>{{cite web|title=Partners|url=http://internationaal.pvda.nl/general/Partners|publisher=]|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}}</ref>|| PvdA || Decided to minimise involvement in SI in December 2012.<ref> {{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.</ref> Delisted in December 2014.
|-
|| {{NZL}}||]{{sfn|Lamb|Docherty|2006|p=253}}|| NZLP || Member since 1952.{{sfn|Lamb|Docherty|2006|p=253}} Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Delisted in December 2014.
|-
|{{Flagicon|Nicaragua}}]
|]
|FSLN
|Expelled in January 2019 because of violation of human rights during the ]
|-
|{{flag|Nigeria}}
|]<ref name="palestine" />
|APC|| Admitted as consultative member in December 2014.<ref name="December2014SICouncil" />
|-
|| {{flag|North Vietnam}}||]{{sfn|Lamb|Docherty|2006|p=355}}|| || Consultative member between 1955 and 1969.{{sfn|Lamb|Docherty|2006|p=355}}
|-
|| {{NOR}}||]<ref>{{cite web |title=Information in English|url=http://arbeiderpartiet.no/Kontakt/Information-in-English|publisher=]}}</ref>{{sfn|Lamb|Docherty|2006|p=255}}|| DNA || Member since 1951.{{sfn|Lamb|Docherty|2006|p=255}} Withdrew in 2016.
|-
| rowspan="2"| {{PRY}}||]<ref>{{cite web|title=Party for a Country of Solidarity|url=http://www.paissolidario.org.py/|publisher=]|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}}</ref>|| PPS || Admitted as consultative member in 2003.<ref name="xxii" /> Promoted to full member in 2008.<ref name="xxiii" />
|-
|]<ref>{{cite web |title=Socialist International met in Paraguay ahead of presidential elections|url=http://www.socialistinternational.org/viewArticle.cfm?ArticleID=1860|publisher=Socialist International}}</ref>{{sfn|Lamb|Docherty|2006|p=121}}|| PRF || Admitted as full member in the 1970s.{{sfn|Lamb|Docherty|2006|p=121}}
|-
|| {{PHL}}||]|| || Admitted as consultative member in 2003.<ref name="xxii" />
|-
| rowspan="3"| {{POL}}||]<ref>{{cite web|title=English|url=http://www.sld.org.pl/strony/40-english.html|publisher=]|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}}</ref>{{sfn|Lamb|Docherty|2006|p=103}}|| SLD || Full member since 1996.{{sfn|Lamb|Docherty|2006|p=103}} Withdrew in 2017.
|-
|]{{sfn|Lamb|Docherty|2006|p=352}}|| UP || Admitted as full member in 1996.<ref name="xx" />{{sfn|Lamb|Docherty|2006|p=352}} Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /><br /> Delisted in December 2014.
|-
|]|| SdRP || Admitted as full member in 1996.<ref name="xx" /> Absorbed into the ] in 1999.
|-
|| {{ROU}}||]|| PD || Admitted as consultative member in 1996.<ref name="xx" /> Promoted to full member in 1999.<ref name="xxi" /> Merged with the ] to form the ].
|-
|| {{RUS}} || ]<ref>{{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}}</ref><ref>{{cite web|title=Just Russia – member of Socialist International|url=http://mironov.info/socialist-international/just-russia-member-of-socialist-international/|publisher=]|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}}</ref> || SRZP || Admitted as observer member in 2008.<ref name=xxiii/> Promoted to consultative member in 2010. Promoted to full member in 2012.<ref name=xxiv/><ref>{{cite web|url=http://www.spravedlivo.ru/news/anews/19005.php|title=СПРАВЕДЛИВАЯ РОССИЯ стала полноправным членом Социнтерна|publisher=]|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}}</ref> Expelled in March 2022 for its support for the ].<ref>{{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}}</ref>
|-
|| {{RUS}}||]|| SDPR || Admitted as consultative member in 2003.<ref name="xxii" />
|-
|| {{KNA}}||]|| SKNLP || Admitted as consultative member in 1992.<ref name="xix" /> Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Delisted in December 2014.
|-
| rowspan="2"| {{LCA}}||]|| || Expelled in 1992.<ref name="xix" />
|-
|]|| SLP || Admitted as consultative member in 1992.<ref name="xix" /> Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Delisted in December 2014.
|-
| rowspan="2"| {{VCT}}||]|| SVGLP || Admitted as consultative member in 1989.<ref name="xviii" /> Merged with the ] in 1994 to form the ].
|-
|]|| ULP || Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Delisted in December 2014.
|-
| rowspan="2" |{{SRB}}
|]<ref name="serbia">{{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}}</ref>
|DS|| Admitted as consultative member in 2003.<ref name="xxii" /> Promoted to full member in 2008.<ref name="xxiii" />
|-
|]<ref name="serbia" />|| SDP || Admitted as consultative member in 2003.<ref name="xxii" /> Promoted to full member in 2008.<ref name="xxiii" /><br />Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Ceased to exist in 2009<ref name="serbia" />
|-
|| {{SIN}}||]|| PAP || Resigned in 1976 in response to the ]'s charges of violations of human rights and detention of political prisoners without trial,<ref>{{Cite news|date=1976-06-01|title=Main Singapore Party Quits The Socialist International|language=en-US|work=]|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}}</ref> and DLP and the ]'s charges of media censorship.<ref>{{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}}</ref><ref>{{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}}</ref>
|-
| rowspan="2"| {{SVK}}||]|| SDĽ || Admitted as full member in 1996.<ref name="xx" /> Merged with ] in 2005.
|-
|]|| SDSS || Admitted as full member in 1992.<ref name="xix" /> Merged with ] in 2005.
|-
| rowspan="2"| {{SVN}}||]|| SDS || Admitted (as the Social Democratic Party of Slovenia) as observer member in 1992.<ref name="xix" />
|-
|]{{sfn|Lamb|Docherty|2006|p=316}}|| SD || Admitted (as ]) as full member in 1996.<ref name="xx" />{{sfn|Lamb|Docherty|2006|p=316}} Demoted to observer member in 2012 due to non-payment of membership fees.<ref name="members" /> Delisted in December 2014.
|-
|| {{SWE}}||]|| SAP || Withdrew in March 2017.<ref>{{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}}</ref>
|-
|| {{CHE}}||]<ref>{{cite web|title=Internationale socialiste|url=http://www.sp-ps.ch/fre/Parti/Organisation/PS-international/Internationale-socialiste|publisher=]|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}}</ref>|| SP/PS || Withdrew in 2017.
|-
|{{TAN}}
|] ||CCM|| Admitted as full member in 2013.
|-
|{{TLS}}
|] ||FRETILIN|| Admitted as consultative member in 2003.<ref name="xxii" />
|-
| rowspan="2"| {{TUN}}||]{{sfn|Lamb|Docherty|2006|p=101}}|| RCD || Admitted as full member in 1989.<ref name="xviii" /> Full member since 1993.{{sfn|Lamb|Docherty|2006|p=101}} Expelled in January 2011.<ref name="SI170111">{{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}}</ref>
|-
|]|| MUP || Admitted as consultative member in 1989.<ref name="xviii" />
|-
| rowspan="4"| {{TUR}}||]|| DSP || Admitted as consultative member in 1986.<ref name="xvii" /> Expelled in 1992.<ref name="xix" />
|-
|]|| DEHAP || Admitted as observer member in 2003.<ref name="xxii" /> Merged with the Democratic Society Movement to form the ] which in turn was succeeded by the ].
|-
|]{{sfn|Lamb|Docherty|2006|p=289}}|| SODEP || Full member since 1990.{{sfn|Lamb|Docherty|2006|p=289}} Merged with the ] in 1995.{{sfn|Lamb|Docherty|2006|p=289}}
|-
|]|| SHP || Admitted as consultative member in 1986.<ref name="xvii" /> Promoted to full member in 1989.<ref name="xviii" /> Merged with the ] in 1995.
|-
|| {{UKR}}||]|| SPU || Admitted as consultative member in 2003.<ref name="xxii" /> Expelled in July 2011.<ref>, '']'', 03, July 2011</ref>
|-
| rowspan="3" |{{USA}}
|]
|DSA
|Had been a member of SI since founding in 1982, withdrew in August 2017.<ref name=":1">{{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}}</ref>
|-
|]
|DSOC
|Member since 1976,<ref>{{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}}</ref> merged with the New American Movement in 1982 to form the Democratic Socialists of America, which remained a member until 2011.<ref name=":1" />
|-
|]{{sfn|Lamb|Docherty|2006|p=316}}|| SDUSA || Member since 1972.{{sfn|Lamb|Docherty|2006|p=316}} Withdrew in 2005.
|-
| rowspan="2"| {{URY}}||]|| PGP || Admitted as consultative member in 1992.<ref name="xix" /> Merged with the ] in 1994.
|-
|]{{sfn|Lamb|Docherty|2006|p=327}}|| PSUA || Admitted as full member in 1999.<ref name="xxi" />{{sfn|Lamb|Docherty|2006|p=327}} Withdrew in 2017.<ref> - El Observador, 18 May 2018</ref>
|-
| rowspan="2"| {{VEN}}||]|| PODEMOS || Admitted as consultative member in 2008.<ref name="xxiii" />
|-
|]
|MAS|| Admitted as consultative member in 2003.<ref name="xxii" />
|-
|{{ZAM}}
|]
|PF|| Admitted as consultative member in 2013.<ref name="feb2013" />
|-
||{{ZIM}}||]|| MDC || Admitted as full member in 2008.<ref name="xxiii" /> Delisted in 2017.
|}

==Fraternal organisations==
* ]{{sfn|Lamb|Docherty|2006|p=170}}
* ]<ref>{{cite web |title=Socialist International Women|date=22 January 2024 |url=http://www.socintwomen.org.uk/en/|publisher=]}}</ref>

==Associated organisations==
{{columns-list |colwidth=15em|
* Arab Social Democratic Forum, ASDF
* Euro-Latin American Forum of Progressive and Socialist Parliamentarians
* International Federation of the Socialist and Democratic Press{{sfn|Lamb|Docherty|2006|p=170}}
* ]{{sfn|Lamb|Docherty|2006|p=173}}
* International Labour Sports Confederation{{sfn|Lamb|Docherty|2006|p=173}}
* ]{{sfn|Lamb|Docherty|2006|p=174}}<ref name=xx/><ref>{{cite web|title=What is the ILRS?|url=http://ilrs.org/english/intro.html|publisher=]}}</ref>
* International Social Democratic Union for Education{{sfn|Lamb|Docherty|2006|p=174}}
* World Labour Zionist Movement, WLZM
* ]<ref>{{cite web|title=Political Parties|url=http://www.ndi.org/content/political_parties-ww|publisher=]|url-status=dead|archive-url=https://web.archive.org/web/20110116024535/http://www.ndi.org/content/political_parties-ww|archive-date=16 January 2011}}</ref>
* ]{{sfn|Lamb|Docherty|2006|p=267}}
* Social Democratic Group of the ]
}}

==See also==
{{Portal|Socialism}}
* ]
* ]

:;Left-wing Internationals
Chronologically by ideology:
;United left wing
* ], the First International (1864–1876)

;Anarchist
* ]: at first with the 1st International; followed by:
** ], sometimes known as the "Black" International (1881-1887); anarchist
** ] – Asociación Internacional de los Trabajadores ] (est. 1922) and the ] (IFA; est. 1968), with several spin-offs: ] (est. 1954), ] (est. 1958), ](SIL/ILS) network (est. 2001)

;Socialist & labour
* ] (1889–1916), socialist and labour
* ] (est. 1919), socialist
* ] (IWUSP), aka 2½ International or Vienna International, founded by ] (1921-1923)
* ] (1923-1940), created by merger of Vienna and Berne Internationals

;Communist
* ], aka Third International or Comintern (1919-1943)

;Trotskyist
* ] (1938-1953 schism) led by the International Secretariat (ISFI); followed by ].
*] (since 1963), by reunification of ISFI and parts of the ] (ICFI)

;Democratic socialism
* Socialist International (est. 1951)

;Reunification efforts
* ], 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=]|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==
*
*
* Julius Braunthal, "The Rebirth of Social Democracy," ''Foreign Affairs,'' vol. 27, no. 4 (July 1949), pp.&nbsp;586–600.
* Pentti Vaananen, ''The Rose and the Fist,'' SYS Print, 2014, pp.&nbsp;50–230. {{ISBN|978-952-93-3706-4}}

==External links==
* {{official website}}

{{Socialist International|state=expanded}}
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Latest revision as of 04:04, 20 January 2025

This article is about the modern alliance of social democratic political parties. For the historic alliance of left-wing and socialist parties, see Second International.Political international

Socialist International
Socialist International logo
Light red: Countries with a political party affiliated with the Socialist International
Dark red: Countries with the ruling party affiliated with the Socialist International
AbbreviationSI
PredecessorLabour and Socialist International
Formation3 June 1951; 73 years ago (1951-06-03)
TypeInternational non-governmental organization
Purpose"Strengthen relations between the affiliated parties and to coordinate their political attitudes and activities"
Location
Region served Worldwide
Membership119 political parties and 13 affiliated organizations
PresidentPedro Sánchez
Vice-PresidentTemirlan Sultanbekov
Secretary GeneralBenedicta Lasi
Main organCongress of the Socialist International
SecessionsProgressive Alliance
Budget£1.4 million (2014)
Websitesocialistinternational.org
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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 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.

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, 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. It was formed in London on 28 September 1864 by socialist, communist and anarchist political groups and trade unions. Tensions between moderates and revolutionaries led to its dissolution in 1876 in Philadelphia.

The Second International was formed in Paris on 14 July 1889 as an association of the socialist parties. 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. In March 1919, Communist parties formed the Communist International ("Comintern"), the Third International, at a meeting in Moscow.

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. The ISC and the IWUSP joined to form the Labour and Socialist International (LSI) in May 1923 at a meeting in Hamburg. 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.

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. 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.

Willy Brandt 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.

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; 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. 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, 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.

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.

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. 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.

Presidents, honorary presidents and secretaries general

Presidents

  • As of 2023, there have been a total of 9 Socialist International presidents.
No. Portrait Name Country Party Term Tenure Vice-President
Name Country
1 Morgan Phillips
(1902–1963) 		 United Kingdom Labour Party 1951
–
1957 		5–6 years
2 Alsing Andersen
(1893–1962) 		 Denmark Social Democratic Party of Denmark 1957
–
1962 		4–5 years
3 Erich Ollenhauer
(1901–1963) 		 West Germany Social Democratic Party of Germany 1963–1963 <1 year
4 Bruno Pittermann
(1905–1983) 		 Austria Social Democratic Party of Austria 1964
–
1976 		11–12 years
5 Willy Brandt
(1913–1992) 		 West Germany Social Democratic Party of Germany 1976
–
1992 		15–16 years
6 Pierre Mauroy
(1928–2013) 		 France Socialist Party of France 17 September 1992
–
10 November 1999 		7 years, 54 days
7 António Guterres
(b. 1949) 		 Portugal Socialist Party of Portugal 10 November 1999
–
15 June 2005 		5 years, 217 days
8 George Papandreou
(b. 1952) 		 Greece PASOK / KIDISO 30 January 2006
–
25 November 2022 		16 years, 300 days
9 Pedro Sánchez
(b. 1972) 		 Spain Spanish Socialist Workers' Party 25 November 2022
–
Incumbent 		2 years, 56 days Temirlan Sultanbekov  Kyrgyzstan

Honorary presidents

Current and honorary presidents include:

Secretaries general

Albert Carthy, secretary general from the United Kingdom from 1957 to 1969.

Summits

Members

Full members

There are 92 full members:

Country Name Abbr Government Notes Lower House Upper House
 Albania Socialist Party of Albania PS in government Admitted as consultative member in 1999. Promoted to full member in 2003. 74 / 140 (53%)
 Algeria Socialist Forces Front FFS in opposition Admitted as consultative member in 1992. Promoted to full member in 1996. 0 / 407 (0%) 4 / 144 (3%)
 Andorra Social Democratic Party PS in opposition Promoted to full member in 2003. 3 / 28 (11%)
 Angola Popular Movement for the Liberation of Angola MPLA in government Admitted as observer member in 1996. Promoted to full member in 2003. 124 / 220 (56%)
 Argentina Radical Civic Union UCR in opposition Admitted as consultative member in 1996. Promoted to full member in 1999. 34 / 257 (13%) 13 / 72 (18%)
 Armenia Armenian Revolutionary Federation ARF in opposition Admitted (as Armenian Socialist Party) as observer member in 1996. Promoted (as ASP) to consultative member in 1999. Promoted (as ASP) to full member in 2003. 10 / 107 (9%)
 Belarus Belarusian Social Democratic Party BSDP extra-parliamentary Admitted as observer member in 1999. Promoted to consultative member in 2003. Promoted to full member in November 2015. Officially deregistered in Belarus since 2005. 0 / 110 (0%) 0 / 64 (0%)
 Belgium Socialist Party PS junior party in coalition 20 / 150 (13%) 7 / 60 (12%)
 Bolivia National Unity Front UN extra-parliamentary Promoted to full member in March 2017. 0 / 130 (0%) 0 / 36 (0%)
 Bosnia and Herzegovina Social Democratic Party of Bosnia and Herzegovina SDP BiH in government Admitted as observer member in 1996. Promoted to full member in 1999.
 6 / 42 (14%) 0 / 15 (0%)
 Brazil Democratic Labour Party PDT junior party in coalition Admitted as consultative member in 1986. Promoted to full member in 1989. 18 / 513 (4%) 2 / 81 (2%)
 Bulgaria Party of Bulgarian Social Democrats PBSD extra-parliamentary 0 / 240 (0%)
Bulgarian Socialist Party BSP in opposition Admitted as full member in 2003. 18 / 240 (8%)
 Burkina Faso People's Movement for Progress MPP extra-parliamentary Admitted as full member in 2016. 0 / 127 (0%)
 Cameroon Social Democratic Front SDF in opposition Admitted as consultative member in 1996. Promoted to full member in 1999. 5 / 180 (3%) 1 / 100 (1%)
 Cape Verde African Party for the Independence of Cape Verde PAICV in opposition Admitted as consultative member in 1992. Promoted to full member in 1996. 30 / 72 (42%)
 Central African Republic Movement for the Liberation of the Central African People MLPC in opposition Admitted as observer member in 2008. Upgraded to full member in 2018. 9 / 100 (9%)
 Chad National Union for Democracy and Renewal UNDR extra-parliamentary Admitted as observer member in June/July 2014. Upgraded to full member in 2017. 0 / 155 (0%)
 Chile Party for Democracy PPD junior party in coalition Admitted as consultative member in 1992. Promoted to full member in 1996. 7 / 155 (5%) 6 / 50 (12%)
Radical Party of Chile PRSD junior party in coalition 4 / 155 (3%) 0 / 50 (0%)
Socialist Party of Chile PS junior party in coalition Admitted as consultative member in 1992. Promoted to full member in 1996. 13 / 155 (8%) 7 / 50 (14%)
 Colombia Colombian Liberal Party PLC junior party in coalition Admitted as consultative member in 1992. Promoted to full member in 1999. 32 / 188 (17%) 14 / 108 (13%)
 Costa Rica National Liberation Party PLN in opposition Full member since 1987. 19 / 57 (33%)
 Croatia Social Democratic Party of Croatia SDP in opposition Admitted as full member in 1999. 37 / 151 (25%)
 Cyprus EDEK Socialist Party EDEK junior party in coalition Full member since 1987. Promoted to full member in 1992. 3 / 56 (5%)
Cyprus Northern Cyprus Cyprus (North) Republican Turkish Party CTP in opposition Admitted as consultative member in 2008 (pending consultation). Promoted to full member in June/July 2014. 18 / 50 (36%)
Communal Democracy Party TDP extra-parliamentary Admitted as consultative member in November 2015. Promoted to full member in March 2017. 0 / 50 (0%)
 Czech Republic Social Democracy SOCDEM in opposition 0 / 200 (0%) 1 / 81 (1%)
 Democratic Republic of the Congo Union for Democracy and Social Progress UDPS in government Admitted as observer member in 2003. 32 / 500 (6%) 0 / 108 (0%)
 Dominican Republic Dominican Revolutionary Party PRD in opposition Full member since 1987. 4 / 190 (2%) 0 / 32 (0%)
 Equatorial Guinea Convergence for Social Democracy CPDS extra-parliamentary Admitted as consultative member in 1996. Promoted to full member in 1999. 0 / 100 (0%)
 Finland Social Democratic Party of Finland SDP in opposition 43 / 200 (22%)
 France Socialist Party PS in opposition 63 / 577 (11%) 66 / 348 (19%)
 Ghana National Democratic Congress NDC in opposition Admitted as consultative member in 2003. Promoted to full member in 2008. 137 / 275 (50%)
 Greece PASOK – Movement for Change PASOK-KINAL in opposition Full member since 1990. 32 / 300 (11%)
 Guatemala National Unity of Hope UNE in opposition Admitted as full member in 2008. 28 / 160 (18%)
 Guinea Rally of the Guinean People RPG in opposition Admitted (as Guinean People's Assembly) as consultative member in 1999. Promoted (as GPA) to full member in 2003. 1 / 81 (1%)
 Haiti Fusion of Haitian Social Democrats PFSDH extra-parliamentary Full member since 1989. 0 / 119 (0%) 0 / 30 (0%)
Social Democratic Assembly for the Progress of Haiti (RSD) RSD extra-parliamentary Admitted as full members in 2018 0 / 119 (0%) 0 / 30 (0%)
 Hungary Hungarian Socialist Party MSzP in opposition Admitted as observer member in 1992. Promoted to full member in 1996. 10 / 199 (5%)
 India Indian National Congress INC in opposition Originally joined in 1993. Readmitted as full member December 2014. 99 / 543 (18%) 27 / 245 (11%)
 Iraq Patriotic Union of Kurdistan PUK junior party in coalition Admitted as observer member in 2003. Promoted to full member in 2008. 17 / 329 (5%)
 Israel The Democrats הדמוקרטים in opposition 2024 merger of the Israeli Labor Party and Meretz. 4 / 120
 Italy Italian Socialist Party PSI extra-parliamentary 0 / 400 (0%) 0 / 200 (0%)
 Jamaica People's National Party PNP in opposition Full member since 1952. Temporarily demoted to observer member in 2012 due to non-payment of membership fees. 14 / 63 (22%) 8 / 21 (38%)
 Japan Social Democratic Party SDP in opposition Full member since 1951 as the Japan Socialist Party. 1 / 465 (0.2%) 2 / 248 (0.8%)
 Kazakhstan Nationwide Social Democratic Party JSDP in opposition Admitted as consultative member in 2012. Promoted to full member in November 2015. 4 / 98 (4%)
 Kyrgyzstan Social Democrats (Kyrgyzstan) SDK in opposition Legal successor to the Social Democratic Party of Kyrgyzstan. 1 / 90 (1%)
 Lebanon Progressive Socialist Party PSP in opposition Full member since 1980. 8 / 128 (6%)
 Lithuania Social Democratic Party of Lithuania LSDP in government Full member since the 1990s. 52 / 141 (37%)
 Luxembourg Luxembourg Socialist Workers' Party LSAP/POSL in opposition Full member since 1951. 11 / 60 (18%)
 Mali Alliance for Democracy in Mali ADEMA-PASJ in opposition Admitted as consultative member in 1996. Promoted to full member in 1999. Promoted to full member in 2008. Status unclear following the 2020 Malian coup d'état. 24 / 147 (16%)
Rally for Mali RPM in opposition Admitted as consultative member in 2003. Status unclear following the 2020 Malian coup d'état. 51 / 147 (35%)
 Malta Malta Labour Party PL in government Full member since 1955, leading to the entire party being interdicted by the Catholic Church in 1961. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014. Rejoined in 2025. 43 / 79 (54%)
 Mauritania Rally of Democratic Forces RFD extra-parliamentary Admitted as observer member in 2003. Promoted to full member in 2008. 0 / 176 (0%)
 Mauritius Labour Party PTR in government Full member since 1969. 35 / 66 (53%)
Mauritian Militant Movement MMM in government Admitted as consultative member in 1996. Promoted to full member in 2003. Part of the Alliance of the Heart. 19 / 66 (29%)
 Mexico Institutional Revolutionary Party PRI in opposition Admitted as consultative member in 1996. Promoted to full member in 2003. 68 / 500 (14%) 13 / 128 (10%)
 Moldova European Social Democratic Party PSDE extra-parliamentary Admitted as consultative member in 2008. Promoted to full member in 2012.
Part of Alliance for European Integration. 		0 / 101 (0%)
 Mongolia Mongolian People's Party MPP in government Admitted (as Mongolian People's Revolutionary Party) as observer member in 1999.
Promoted (as Mongolian People's Revolutionary Party) to full member in 2003. 		62 / 76 (82%)
 Montenegro Democratic Party of Socialists of Montenegro DPS in opposition Admitted as consultative member in 2003. Promoted to full member in 2008. 17 / 81 (21%)
Social Democratic Party of Montenegro SDP extra-parliamentary Admitted as observer member in 1996. Promoted to consultative member in 1999. Promoted to full member in 2003.
 0 / 81 (0%)
 Morocco Socialist Union of Popular Forces USFP in opposition Promoted to full member in 1992. 37 / 395 (9%) 8 / 120 (7%)
 Mozambique Frelimo Party FRELIMO in government Admitted as consultative member in 1996. Promoted to full member in 1999. 184 / 250 (74%)
 Namibia South West Africa People's Organisation SWAPO in government Promoted to full member in 2008. 63 / 96 (66%) 28 / 42 (67%)
 Nepal Nepali Congress NC in opposition Admitted as consultative member in 1989. Promoted to full member in 1999. 88 / 275 (32%) 16 / 59 (27%)
 Niger Nigerien Party for Democracy and Socialism PNDS in opposition Admitted as consultative member in 1996. Promoted to full member in 2003. Status unclear following the 2023 Nigerien coup d'état. 79 / 171 (46%)
 Pakistan Pakistan Peoples Party PPP junior party in coalition Admitted as consultative member in 1989. Promoted to full member in 2003. 0 / 336 (0%) 20 / 100 (20%)
 Palestine Fatah in government Admitted as observer member in 1996. Promoted to consultative member in 1999.
Promoted to full member in 2012. 		45 / 132 (34%)
 Panama Democratic Revolutionary Party PRD in government Admitted as consultative member in 1986. Admitted as consultative member in 1996. Promoted to full member in 2003. 35 / 71 (49%)
 Paraguay Progressive Democratic Party PDP extra-parliamentary Admitted as consultative member in 2008. Promoted to full member in November 2015. 0 / 80 (0%) 0 / 45 (0%)
 Peru Peruvian Aprista Party PAP extra-parliamentary Promoted to full member in 1999. 0 / 130 (0%)
 Philippines Philippine Democratic Socialist Party PDSP 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. 0 / 316 (0%) 0 / 24 (0%)
 Portugal Socialist Party PS in opposition 78 / 230 (34%)
 Puerto Rico Puerto Rican Independence Party PIP in opposition Consultative member in 1987, full member in 1994. Promoted to full member in 1992. 1 / 51 (2%) 1 / 27 (4%)
 Romania Social Democratic Party PSD 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. Admitted as full member in 2003. Both parties merged into PSD in 2001. 107 / 330 (32%) 49 / 136 (36%)
 San Marino Party of Socialists and Democrats PSD junior partner in coalition Consultative member in 1961, full member in 1980. 4 / 60 (7%)
 Senegal Socialist Party of Senegal PS junior partner in coalition Full member since the 1970s. Boycotted last election. 0 / 150 (0%)
 Slovakia Direction – Social Democracy SMER-SD in government Full member. 42 / 150 (28%)
 South Africa African National Congress ANC in government Admitted as full member in 1999. 159 / 400 (40%) 43 / 90 (48%)
 Spain Spanish Socialist Workers' Party PSOE in government Full member since 1951. 121 / 350 (35%) 88 / 266 (33%)
 Tunisia Democratic Forum for Labour and Liberties FDTL — 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. 0 / 217 (0%)
 Turkey Republican People's Party CHP in opposition Took Social Democratic Populist Party's place in 1995. 128 / 600 (21%)
 Uruguay New Space PNE in opposition Admitted as consultative member in 1999. Promoted to full member in 2003.Party does not individually stand in elections but participates as part of the Broad Front.
 Venezuela A New Era UNT extra-parliamentary Admitted as consultative member in 2013. Promoted to full member in November 2015. 0 / 277 (0%)
Democratic Action AD in opposition Observer member in 1966, consultative member in 1981, full member mid 1980s. 11 / 277 (4%)
Popular Will VP extra-parliamentary Admitted as full member in December 2014. 0 / 277 (0%)
 Yemen Yemeni Socialist Party YSP in opposition Admitted as observer member in 2003. Promoted to consultative member in 2008.
Promoted to full member in 2012. 		8 / 301 (3%)

Consultative parties

There are 19 consultative parties:

Country Name Abbr Government Notes Lower House Upper House
 Botswana Botswana Democratic Party BDP in opposition Admitted as consultative member in June/July 2014. 4 / 61 (7%)
 Democratic Republic of the Congo Unified Lumumbist Party PALU in opposition Admitted as observer member in December 2014. Upgraded to consultative in 2019. 17 / 500 (3%) 2 / 108 (2%)
 Djibouti Movement for Democratic Renewal and Development MRD — Admitted as consultative members in 2019.
 Eswatini People's United Democratic Movement PUDEMO — Admitted as consultative member in 2013. Political parties are banned in Eswatini.
 Gabon Gabonese Progress Party PGP — Admitted as consultative member in 1996. 0 / 143 (0%)
 Gambia United Democratic Party UDP in opposition Admitted as consultative member in 2012. 15 / 58 (26%)
 Georgia Social Democrats for the Development of Georgia SDD extra-parliamentary Admitted as consultative member in 2013. 0 / 150 (0%)
 Ghana Convention People's Party CPP extra-parliamentary Admitted as consultative member in 2018 0 / 275 (0%)
 Guinea-Bissau African Party for the Independence of Guinea and Cape Verde PAIGC in opposition Admitted as consultative member in 2008. 47 / 102 (46%)
 Iran Democratic Party of Iranian Kurdistan PDKI — Admitted as observer member in 1996. Promoted to consultative member in 2008. Officially banned in Iran.
Komala Party of Iranian Kurdistan KPIK — Admitted as observer member in 2014 Promoted to consultative member in 2018 Officially banned in Iran.
 Palestine Palestinian National Initiative PNI in opposition Admitted as observer member in 2008. Promoted to consultative member in 2012. 2 / 132 (2%)
Palestinian Popular Struggle Front PPSF junior partner in coalition Admitted as consultative member in 2018. 0 / 132 (0%)
 Sahrawi Republic Polisario Front POLISARIO in government Admitted as observer member in 2008. Promoted to consultative member in 2017. 51 / 51 (100%)
 São Tomé and Príncipe Movement for the Liberation of São Tomé and Príncipe/Social Democratic Party MLSTP/PSD in opposition Admitted as consultative member in 2013. 18 / 55 (33%)
 Syria Democratic Union Party PYD extra-parliamentary opposition Admitted as consultative member in November 2015. 0 / 250 (0%)
 Togo Democratic Convention of African Peoples CDPA extra-parliamentary opposition Admitted as consultative member in 1999. 0 / 91 (0%)
 Ukraine Social Democratic Party of Ukraine SDPU extra-parliamentary opposition Admitted as consultative member in 2003. 0 / 450 (0%)

Observer parties

There are eight observer parties:

Country Name Abbr Government Notes
 Eswatini Swazi Democratic Party SWADEPA — Admitted as observer member in June/July 2014.
 Ireland Labour Party in opposition
 Kenya Labour Party of Kenya Admitted as observer member in 2012.
 Kosovo Vetëvendosje VV in government Admitted as observer member in 2018.
 Lesotho Lesotho Congress for Democracy LCD junior party in coalition Admitted as observer member in June/July 2014.
 Serbia Social Democratic Party of Serbia SDPS junior party in coalition Admitted as observer member in 2018.
 Somaliland Justice and Welfare Party JWP in opposition Admitted as observer member in 2013
 United Kingdom Labour Party in government Member since 1951. 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." The request was accepted later that year.
 United Kingdom (Northern Ireland) Social Democratic and Labour Party SDLP in opposition Admitted as a full member in 1974.

Former members

This list is incomplete; you can help by adding missing items. (July 2024)
Country Name Abbr Notes
 Albania Social Democratic Party of Albania PSD Admitted as consultative member in 1992. Promoted to full member in 1996. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
 Algeria National Liberation Front FLN Expelled following the 2019 Algerian protests.
 Andorra New Democracy ND Admitted as consultative member in 1999.
 Antigua and Barbuda Antigua and Barbuda Labour Party ALP Admitted as consultative member in 2008.
 Argentina Popular Socialist Party PSP Admitted as full member in 1992. Merged with the Democratic Socialist Party to form the Socialist Party.
Socialist Party PS Full member since 1951.
 Azerbaijan 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.
 Aruba People's Electoral Movement MEP Promoted to full member in 1992. Full member since 1994. Delisted in December 2014.
 Australia Australian Labor Party ALP Admitted as full member in 1966. Delisted in December 2014.
 Austria Social Democratic Party of Austria SPÖ Admitted as a full member in 1951. Delisted in 2022.
 Barbados Barbados Labour Party BLP Admitted as full member in 1987. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
 Belgium Belgian Socialist Party PSB/BSP Founder member. Split in 1978.
Forward Delisted in 2017.
 Benin Democratic Union of Progressive Forces UDFP Admitted as observer member in 1992.
Social Democratic Party PSD Admitted as consultative member in 1999. Promoted to full member in 2003.
 Bosnia and Herzegovina Alliance of Independent Social Democrats SNSD Admitted as consultative member in 2003. Promoted to full member in 2008 Expelled in August 2012.
 Botswana Botswana National Front BNF Admitted as observer member in 1996.
 Bolivia Revolutionary Left Movement MIR Admitted as consultative member in 1986. Consultative member in 1987. Promoted to full member in 1992.
 Bulgaria Bulgarian Euro-Left BEL Admitted as observer member in 1999.
 Burkina Faso Party for Democracy and Progress / Socialist Party PDP/PS Admitted as full member circa 1995. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
 Burundi Front for Democracy in Burundi FRODEBU Admitted as consultative member in 2003. Demoted to observer member in 2012 due to non-payment of membership fees.
Delisted in December 2014.
 Canada Co-operative Commonwealth Federation CCF Became the New Democratic Party in 1961.
 Canada New Democratic Party NDP/NPD Delisted in 2018.
 Central African Republic Movement for Democracy and Social Progress MDPS Admitted as observer member in 1992.
 Iran Kurdistan Democratic Party KDP Admitted as a full member in November 2015. Party dissolved in 2022.
 Kyrgyzstan Social Democratic Party of Kyrgyzstan SDPK
 Ivory Coast Ivorian Popular Front FPI Admitted as consultative member in 1992. Promoted to full member in 1996. Expelled in March 2011.
 Colombia Alternative Democratic Pole PDA Former observer member. Delisted in December 2014.
M-19 Democratic Alliance AD/M-19 Admitted as observer member in 1992.
 Curaçao Partido MAN MAN Promoted to full member in 1989. Delisted in 2017.
 Denmark Social Democrats SD Founding member. Withdrew in 2017.
 Dominica Dominica Labour Party DLP Admitted as consultative member in 1996. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
 Ecuador Democratic Left PID Member since 1987. Delisted in 2017.
 Egypt 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 NDP Admitted as full member in 1989. Full member since 1992. Expelled in January 2011.
 El Salvador Democratic Party PD Admitted as observer member in 1996.
 Estonia Social Democratic Party SDE Member since 1990. Withdrew in 2017.
 Fiji Fiji Labour Party FLP Admitted as consultative member in 1992. Expelled in 2008, due to the party's participation in a government issued from a military coup.
 France French Section of the Workers' International SFIO Founding member. Member in 1951–1969.
 Georgia Union of Citizens of Georgia CUG Admitted as observer member in 1996. Party disbanded in 2003.
 Germany Social Democratic Party of Germany SPD Founding member. Withdrew in 2017.
 Greenland Siumut Admitted as consultative member in 1986. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
 Guatemala Social Democratic Convergence CSD Admitted as consultative member in 2003.
 Haiti Party of the National Congress of Democratic Movements KONAKOM Admitted as consultative member in 1992. Promoted to full member in 1996.
Struggling People's Organization OPL Admitted (as Lavalas Political Organisation) as observer member in 1996.
Revolutionary Progressive Nationalist Party PANPRA Admitted as consultative member in 1989. Promoted to full member in 1992.
 Hungary 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

 Iceland Social Democratic Party A Member since 1987. Formed Social Democratic Alliance in 2000.
Social Democratic Alliance S Withdrew in 2017.
 Iran League of Iranian Socialists Joined in 1960. It was dissolved in 1980s.
 Israel Israeli Labor Party Avoda Until May 2020, it temporarily suspended membership in July 2018 over SI's adoption of BDS policies.
Meretz Merged with Israeli Labor Party to form The Democrats in 2024.
 Italy Democratic Party of the Left PDS Admitted as full member in 1992. Merged with others to form Democrats of the Left in 1998.
Democrats of the Left DS Full member since 1992 as Democratic Party of the Left. Merged with other movements to form the Democratic Party in 2007. Listed as SI member until XXIV Congress in 2012.
Italian Socialist Party PSI Party 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 Party PSDI Founding member. Party merged into the Italian Democratic Socialists in 1998 (renamed into Italian Socialist Party in 2007).
 Japan Democratic Socialist Party DSP/Minsha-tō Admitted as SI member in 1961. Merged with non-socialist movements to form the New Frontier Party in 1994.
Japan Socialist Party JSP/Shakai-tō Admitted as SI member in 1951. Refounded as the Social Democratic Party in 1996.
 Jordan Jordanian Democratic Party of the Left JDPL Admitted as observer member in 2003.
 Kyrgyzstan Ata Meken Socialist Party Admitted as observer member in 2008.
 Latvia Latvian Social Democratic Workers' Party LSDSP Full member since 1994. Demoted to observer member in 2012 due to non-payment of membership fees.
Delisted in December 2014.
Social Democratic Party "Harmony" SDPS Admitted as consultative member in June/July 2014. Withdrew in 2017.
 North Macedonia Social Democratic Union of Macedonia SDSM Admitted as observer member in 1996. Promoted to full member in 2003. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
 Madagascar Party for National Unity VITM Admitted as consultative member in 1989.
 Malaysia Democratic Action Party DAP Full member since 1987. Delisted in 2017.
 Mexico Party of the Democratic Revolution PRD Admitted as full member in 1996.
 Moldova Social Democratic Party of Moldova PSDM Admitted as observer member in 1996.
 Mongolia Mongolian Social Democratic Party MSDP Admitted as consultative member in 1992. Promoted to full member in 1996. Merged with others in 2000 to form the Democratic Party.
 Namibia Congress of Democrats CoD Admitted as consultative member in 2003. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
 Netherlands Labour Party PvdA Decided to minimise involvement in SI in December 2012. Delisted in December 2014.
 New Zealand New Zealand Labour Party NZLP Member since 1952. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
NicaraguaNicaragua Sandinista National Liberation Front FSLN Expelled in January 2019 because of violation of human rights during the Nicaraguan protests
 Nigeria All Progressives Congress APC Admitted as consultative member in December 2014.
 North Vietnam Vietnamese Socialist Party Consultative member between 1955 and 1969.
 Norway Labour Party DNA Member since 1951. Withdrew in 2016.
 Paraguay Party for a Country of Solidarity PPS Admitted as consultative member in 2003. Promoted to full member in 2008.
Revolutionary Febrerista Party PRF Admitted as full member in the 1970s.
 Philippines Akbayan Admitted as consultative member in 2003.
 Poland Democratic Left Alliance SLD Full member since 1996. Withdrew in 2017.
Labour Union UP Admitted as full member in 1996. Demoted to observer member in 2012 due to non-payment of membership fees.
Delisted in December 2014.
Social Democracy of the Republic of Poland SdRP Admitted as full member in 1996. Absorbed into the Democratic Left Alliance in 1999.
 Romania Democratic Party PD Admitted as consultative member in 1996. Promoted to full member in 1999. Merged with the Liberal Democratic Party to form the Democratic Liberal Party.
 Russia A Just Russia — Patriots — For Truth SRZP Admitted as observer member in 2008. Promoted to consultative member in 2010. Promoted to full member in 2012. Expelled in March 2022 for its support for the Russian invasion of Ukraine.
 Russia Social Democratic Party of Russia SDPR Admitted as consultative member in 2003.
 Saint Kitts and Nevis Saint Kitts and Nevis Labour Party SKNLP Admitted as consultative member in 1992. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
 Saint Lucia Progressive Labour Party Expelled in 1992.
Saint Lucia Labour Party SLP Admitted as consultative member in 1992. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
 Saint Vincent and the Grenadines Saint Vincent Labour Party SVGLP Admitted as consultative member in 1989. Merged with the Movement for National Unity in 1994 to form the Unity Labour Party.
Unity Labour Party ULP Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
 Serbia Democratic Party DS Admitted as consultative member in 2003. Promoted to full member in 2008.
Social Democratic Party SDP Admitted 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
 Singapore People's Action Party PAP Resigned in 1976 in response to the Dutch Labour Party's charges of violations of human rights and detention of political prisoners without trial, and DLP and the British Labour Party's charges of media censorship.
 Slovakia Party of the Democratic Left SDĽ Admitted as full member in 1996. Merged with Direction – Social Democracy in 2005.
Social Democratic Party of Slovakia SDSS Admitted as full member in 1992. Merged with Direction – Social Democracy in 2005.
 Slovenia Slovenian Democratic Party SDS Admitted (as the Social Democratic Party of Slovenia) as observer member in 1992.
Social Democrats SD Admitted (as United List of Social Democrats) as full member in 1996. Demoted to observer member in 2012 due to non-payment of membership fees. Delisted in December 2014.
 Sweden Swedish Social Democratic Party SAP Withdrew in March 2017.
 Switzerland Social Democratic Party of Switzerland SP/PS Withdrew in 2017.
 Tanzania Chama Cha Mapinduzi CCM Admitted as full member in 2013.
 Timor-Leste Revolutionary Front for an Independent East Timor FRETILIN Admitted as consultative member in 2003.
 Tunisia Democratic Constitutional Rally RCD Admitted as full member in 1989. Full member since 1993. Expelled in January 2011.
Popular Unity Movement MUP Admitted as consultative member in 1989.
 Turkey Democratic Left Party DSP Admitted as consultative member in 1986. Expelled in 1992.
Democratic People's Party DEHAP Admitted 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 SODEP Full member since 1990. Merged with the Republican People's Party in 1995.
Social Democratic Populist Party SHP Admitted as consultative member in 1986. Promoted to full member in 1989. Merged with the Republican People's Party in 1995.
 Ukraine Socialist Party of Ukraine SPU Admitted as consultative member in 2003. Expelled in July 2011.
 United States Democratic Socialists of America DSA Had been a member of SI since founding in 1982, withdrew in August 2017.
Democratic Socialists Organizing Committee DSOC Member since 1976, merged with the New American Movement in 1982 to form the Democratic Socialists of America, which remained a member until 2011.
Social Democrats, USA SDUSA Member since 1972. Withdrew in 2005.
 Uruguay Party for the Government of the People PGP Admitted as consultative member in 1992. Merged with the Colorado Party in 1994.
Socialist Party of Uruguay PSUA Admitted as full member in 1999. Withdrew in 2017.
 Venezuela For Social Democracy PODEMOS Admitted as consultative member in 2008.
Movement for Socialism MAS Admitted as consultative member in 2003.
 Zambia Patriotic Front PF Admitted as consultative member in 2013.
 Zimbabwe Movement for Democratic Change MDC Admitted as full member in 2008. Delisted in 2017.

Fraternal organisations

Associated organisations

See also

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

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  2. "Finances of the International". Socialist International.
  3. "About Us". Socialist International.
  4. Nathan Gilbert Quimpo (2020). "The Post-war Rise and Decline of the Left". In Toby Carroll; Shahar Hameiri; Lee Jones (eds.). The Political Economy of Southeast Asia: Politics and Uneven Development Under Hyperglobalisation. Springer Nature. p. 150. ISBN 978-3-03-028255-4.
  5. "Presidium". Socialist International.
  6. Lamb & Docherty 2006, p. 176.
  7. Lamb & Docherty 2006, p. xxiv.
  8. Lamb & Docherty 2006, p. xxv.
  9. Lamb & Docherty 2006, p. 302.
  10. Lamb & Docherty 2006, p. 52.
  11. Lamb & Docherty 2006, p. 77.
  12. Lamb & Docherty 2006, p. 177.
  13. Lamb & Docherty 2006, p. 197.
  14. Lamb & Docherty 2006, p. 320.
  15. The Dictionary of Contemporary Politics of South America, Routledge, 1989
  16. Väänänen, Pentti (2012). Purppuraruusu ja samettinyrkki (in Finnish) (1st ed.). Kellastupa. pp. 192–194. ISBN 9789525787115.
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  18. "Socialist International finally kicks out Mubarak". Foreign Policy. 3 February 2011. Retrieved 31 December 2022.
  19. ^ "SI Presidium addresses situation in Côte d'Ivoire". Socialist International. 19 March 2011.
  20. "Statutes". Socialist International. Retrieved 3 May 2019.
  21. Bruderzwist unter Sozialisten - Politik - Süddeutsche.de. Sueddeutsche.de. Retrieved on 15 July 2013.
  22. Progressive Alliance: Sozialdemokraten gründen weltweites Netzwerk - SPIEGEL ONLINE. Spiegel.de (22 May 2013). Retrieved on 15 July 2013.
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  36. ^ "XXII Congress of the Socialist International, São Paulo - Decisions of the Congress Regarding Membership". Socialist International.
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  40. ^ "XIX Congress of the Socialist International, Berlin - Decisions on Membership of the Socialist International". Socialist International.
  41. ^ "XX Congress of the Socialist International, New York - Congress Decisions Regarding Membership". Socialist International.
  42. "Benvinguts" (in Catalan). Social Democratic Party (Andorra). Archived from the original on 24 September 2015. Retrieved 14 July 2012.
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  44. ^ Lamb & Docherty 2006, p. 270.
  45. ^ Lamb & Docherty 2006, p. 286.
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  47. ^ Lamb & Docherty 2006, p. 37.
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  51. ^ Lamb & Docherty 2006, p. 101.
  52. ^ "XVII Congress of the Socialist International, Lima - Decisions on Membership of the Socialist International". Socialist International.
  53. ^ "XVIII Congress of the Socialist International, Stockholm - Decisions on Membership of the Socialist International". Socialist International.
  54. Lamb & Docherty 2006, p. 67.
  55. ^ Lamb & Docherty 2006, p. 68.
  56. ^ "SI Member Parties in Government". www.socialistinternational.org. Socialist International. 18 March 2019. Retrieved 9 June 2019.
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  58. ^ Lamb & Docherty 2006, p. 25.
  59. ^ "XXIII Congress of the Socialist International, Athens - Decisions of the Congress Regarding Membership". Socialist International.
  60. ^ "SI Council Meeting in Mexico City". Socialist International.
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  62. Lamb & Docherty 2006, p. 314.
  63. ^ Lamb & Docherty 2006, p. 325.
  64. ^ Lamb & Docherty 2006, p. 211.
  65. ^ Lamb & Docherty 2006, p. 245.
  66. "Croatia". European Forum for Democracy and Solidarity. Archived from the original on 15 June 2012. Retrieved 14 July 2012.
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  71. Lamb & Docherty 2006, p. 95.
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  73. ^ Lamb & Docherty 2006, p. 87.
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  76. "Attack on President Condé an assault on democracy". Socialist International. 19 July 2011.
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  78. ^ Lamb & Docherty 2006, p. 351.
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  82. Gabriel Sheffer (1993). Innovative Leaders in International Politics. SUNY Press. p. 202. ISBN 978-0-7914-1520-7. Retrieved 30 January 2013.
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  86. ^ Lamb & Docherty 2006, p. 186.
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  89. ^ Lamb & Docherty 2006, p. 214.
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  92. ^ Lamb & Docherty 2006, p. 29.
  93. ^ Lamb & Docherty 2006, p. 220.
  94. Grech, Sergio. "Contextualising the 1961 Interdict in Malta". OAR@UM.{{cite web}}: CS1 maint: url-status (link)
  95. Sansone, Kurt. "Labour Party re-joins Socialist International once snubbed by Joseph Muscat". MaltaToday.{{cite web}}: CS1 maint: url-status (link)
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  97. ^ Lamb & Docherty 2006, p. 229.
  98. ^ Lamb & Docherty 2006, p. 167.
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  102. ^ "Montenegro". European Forum for Democracy and Solidarity. Archived from the original on 18 April 2005.
  103. "Socijalistička internacionala" (in Montenegrin). Social Democratic Party of Montenegro. Archived from the original on 21 February 2014.
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  106. "Morocco". European Forum for Democracy and Solidarity. Archived from the original on 10 September 2014.
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  108. Lamb & Docherty 2006, p. 132.
  109. "Introduction". Nepali Congress.
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