Party
State
Member from
Notes
Armenian Revolutionary Federation
Ottoman Empire , Russian Empire , Qajar Iran (Armenian )
1907–1916
Australian Socialist League
Colony of New South Wales
1893–1901
Battersea Labour League
United Kingdom
1891–1900
Present in 1891, later became part of the Labour Party .[ 1]
Belgian Labour Party
Belgium
1889–1916
Founding member.
Bloomsbury Socialist Society
United Kingdom
1889–1900
Founding member. Later became part of the Labour Party .[ 1]
Bulgarian Workers' Social Democratic Party
Bulgaria
1893–1903
Bulgarian Social Democratic Workers Party (Broad Socialists)
Bulgaria
1903–1916
Bulgarian Social Democratic Workers' Party (Narrow Socialists)
Bulgaria
1903–1915
Central Revolutionary Committee
France
–1898
Czech Social Democratic Party
Austria-Hungary (Czechoslovak )
Democratic Socialist Party of Basle
Switzerland
1891
Present at the 1891 congress. Membership is unclear after 1891.
Democratic Socialist Party of St. Gall
Switzerland
1891
Present at the 1891 congress. Membership is unclear after 1891.
Dublin Socialist Club
United Kingdom (Irish )
1889–1896
Founding member.[ 2]
Emancipation of Labour
Russian Empire
1889–1903
Founding member. Would go on to become the Russian Social Democratic Labour Party and is sometimes referred to as such.
Fabian Society
United Kingdom
1889–1896
Founding member. Membership is unclear after 1896.[ 2]
Federation of the Socialist Workers of France
France
1889–1902
Founding member. Sometimes confusingly referred to as the Parti Ouvrier.
French Section of the Workers' International
France
1905–1916
Founded as a project of the international to merge the French parties.
French Socialist Party (1902)
France
1902–1905
Ordered by the international to merge into the French Section of the Workers' International .
French Workers' Party
France
1889–1902
Founding member. Otherwise known as the Parti Ouvrier , not to be confused with the Federation of the Socialist Workers of France from which it split.
General Jewish Labour Bund
Russian Empire
1897–1912
General Workers Party of Hungary
Austria-Hungary (Hungarian )
1889–1890
Founding member.
German Workers Union of New York
United States (German )
1889
Founding member and trade union. Membership is unclear after 1889.
Grütli Union
Switzerland
1889–1916
Founding member.
Independent Labour Party
United Kingdom
1893–1916
International Typographical Union
United States
1889
Founding member and trade union. Membership is unclear after 1889.[ 2]
Italian Socialist Party
Kingdom of Italy
1892–1914
Italian Workers' Party
Kingdom of Italy
1889–1892
Founding member.
Jewish Social Democratic Labour Party in Palestine (Poale Zion)
Ottoman Empire (Jewish -Palestinian )
1915–1916
Jewish Socialist Workers Party
Russian Empire (Jewish )
1907–1916
The JSWP was incorporated as a sub-group of the Socialist Revolutionary Party in 1907, but had a separate consultative vote in the Stuttgart congress.[ 3] [ 4]
Knights of Labor
United States
1889
Founding member. Membership is unclear after 1889.
Knights of Labour, Birmingham
United Kingdom
1889
Founding member. Membership is unclear after 1889. A separate British entity to the Knights of Labor .[ 2]
Labour Party
Norway
Labour Party of Portugal
Portugal
1889
Founding member. Membership is unclear after 1889. May refer to the Portuguese Socialist Party .
Legal Eight Hours and International Labour League
United Kingdom
1891–1900
Present in 1891, later became part of the Labour Party .
Luxembourg Socialist Workers' Party
Luxembourg
1902–1916
Metropolitan Radical Federation
United Kingdom
1889
Founding member. Membership is unclear after 1889.[ 2]
Miners' Federation of Great Britain
United Kingdom
1896–
Trade union.
National Union of Gas Workers and General Labourers
United Kingdom
1889–1891
Founding member. Membership is unclear after 1891. Initially called the Gas Stoker's Union, gas workers were a very important force behind the 8 hour day .[ 2] [ 1]
Paris Indian Society
British Raj
1907
While not a party as such, the Paris Indian Society represented Indian nationalist interests at the 1907 congress.
Poale Zion
Multiple states.
A very loose Marxist -Zionist movement starting in 1903.
Polish Social Democratic Party of Galicia
Austria-Hungary (Polish -Ukrainian )
1890–1916
Polish Social Revolutionaries
Russian Empire (Polish )
1891
Minor party present in 1891, later membership is unclear.
Polish Socialist Party
Russian Empire (Polish )
1893–1916
Template:Country data Alsace-Lorraine
Republican Socialist Union of Alsace-Lorraine
German Empire
1889
Founding member. Membership is unclear after 1889.
Revolutionary Communist Alliance
France
1896–1901
Revolutionary Socialist Workers' Party
France
1890–1901
Russian Social Democratic Labour Party
Russian Empire
1898–1912
Delegates began acting independently of the party from 1900, which intensified after the split into the Bolsheviks and Mensheviks from 1903.
Russian Social Democratic Labour Party (Bolsheviks)
Russian Empire
1912–1916
Actually had separate delegates at the international from 1903 as members of the RSDLP.
Russian Social Democratic Labour Party (Mensheviks)
Russian Empire
1912–1916
Actually had separate delegates at the international from 1903 as members of the RSDLP.
Scottish Labour Party
United Kingdom
1889–1895
Founding member.
Second Proletariat
Russian Empire (Polish )
1889–1893
Founding member.
Serbian Social Democratic Party
Serbia
1903–1914
Social Democracy of the Kingdom of Poland and Lithuania
Russian Empire (Polish )
1893–1916
Social Democrat Hunchakian Party
Russian Empire , Ottoman Empire (Armenian )
1904
Represented by Georgi Plekhanov at the 1904 congress, it is unclear if the party attended other congresses.[ 5]
Social Democratic Federation
Denmark
Social Democratic Federation
United Kingdom
1889–1911
Founding member.
Social Democratic League
Netherlands
1889–1900
Founding member.
Social Democratic Party of Austria
Austria-Hungary (Austrian )
Social Democratic Party of Bosnia–Herzegovina
Austria-Hungary (Muslim -Serb -Croat )
1909–1916
Social Democratic Party of Croatia and Slavonia
Austria-Hungary (Croat -Serb )
1894–1916
Social Democratic Party of Finland
Russian Empire (Finnish )
Social Democratic Party of Germany
German Empire
1889–1916
Founding member.
Social Democratic Party of Hungary
Austria-Hungary (Hungarian )
1890–
Social Democratic Party of Romania
Romania
1910–1916
Social Democratic Party of Switzerland
Switzerland
1889–1916
Founding member.
Social Democratic Workers' Party
Netherlands
1894–1916
Social Democratic Workers' Party of Romania
Romania
1893–1900
Socialist group of Buenos Aires
Argentina
1889
Founding member. Membership is unclear after 1889 but likely folded into the Socialist Party .
Socialist Labor Party
Australia
1901–1916
Socialist Labor Party of America
United States
1889–
Founding member.
Socialist League
United Kingdom
1889–1901
Founding member.
Socialist Party
Argentina
1896–1916
Socialist Party of Denmark
Denmark
1889
Founding member. Membership is unclear after 1889. May refer to the Social Democratic Party of Denmark .
Socialist Party of Great Britain
United Kingdom
1904
The SPGB attended just one congress of the international in 1904 before splitting to form the World Socialist Movement .
Socialist Party of Uruguay
Uruguay
1910–1916
Socialist Party of America
United States
1901–1916
Socialist Party of France
France
1902–1905
Ordered by the international to merge into the French Section of the Workers' International .
Socialist Revolutionary Party
Russian Empire
1902–1916
Socialist Revolutionary Party
France
1898–1901
Spanish Socialist Workers' Party
Spain
Swedish Social Democratic Party
Sweden
1889–1916
Founding member.
Third Proletariat
Russian Empire (Polish )
1900–1909
United Brothers of Iowa
United States
1889
Founding member. Membership is unclear after 1889.
United Hebrew Trades
United States (Jewish )
1889–1891
Founding member and trade union. Membership is unclear after 1891.
Yugoslav Social-Democratic Party
Austria-Hungary (Slovene -Croat )
1898–1916
Zionist Socialist Workers Party
Russian Empire (Jewish )
1907–1908
The ISB granted the ZSWP a consultative vote in 1907, but the decision was overturned a year later.[ 3] [ 4]