// Workers AI · dad joke modeWhy was the Trotskyist international list so combative? It had a lot of revolting entries.
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This is a list of Trotskyist internationals. It includes all of the many political internationals which self-identify as Trotskyist.
Of the organizations listed, two claim to be the original Fourth International founded in 1938: the reunified Fourth International (USFI) and the International Committee of the Fourth International (ICFI). The Fourth International split into two factions 1953 over the question of historic perspective, with the International Secretariat (ISFI) turning in favour of deep entryism and supporting petty-bourgeois nationalist movements in less developed countries, and the International Committee (ICFI) upholding the need to form revolutionary parties. The factions reunited in 1963 resulting in the formation of reunified Fourth International (USFI), while parts of the ICFI did not. Both the USFI and ICFI went on to fragment further, giving rise to several new internationals.
Certain organizations which claim to be Trotskyist make no attempt to claim any relationship to the Fourth International in an organizational sense and argue that it no longer exists. Some claim to represent a continuity from the Fourth International or to have re-established it: for example the Fourth International (ICR) International Centre/Center of Reconstruction, also known as the FI (La Verité), also calls itself the "Fourth International".
The various organizations listed here range in size from those having thousands of adherents in dozens of countries to tendencies which can barely claim a dozen members in three or four countries.
List of internationals
[edit]The largest internationals in terms of membership are indicated in bold.
Active
[edit]Internationals that emerged from the Fourth International (USFI)
[edit]- Fourth International Posadist (1962)[1]
- Committee for a Workers' International, CWI (1974) refounded with the same name after a 2019 split.[2]
- International Socialist Tendency, IST (1979) founded by expelled members of the original Fourth International in the 1950s[3]
- International Workers League – Fourth International, IWL-FI (1982) founded by former members of the USFI.[4]
- Current for the Permanent Revolution - Fourth International, CPR-FI (1989) Previously named Trotskyist Fraction - Fourth International. Founded by expelled members of the IWL-FI[5]
- Pathfinder Tendency, (1990) based on USA SWP
- Revolutionary Communist International, RCI (1992). Split from CWI. Previously named International Marxist Tendency, IMT (2004–2024), and the Committee for a Marxist International, CMI (1992–2004)[6]
- International Workers' Unity – Fourth International, IWU-FI (1997) split from IWL-FI.[7]
- International Leninist Trotskyist Fraction, ILTF (1998) split from the TF-FI[8][9]
- Tendency for the Reconstruction of the Fourth International, (2006) formed by expelled members of the TF-FI.[10][11]
- International Revolutionary Left, (2010) split from IMT in 2010 and the CWI in 2019
- Revolutionary Communist International Tendency, RCIT (2011) founded by former members of the IST and L5I.[12][13]
- International Socialist League, ISL-LIS (2019)
- International Socialist Alternative, ISA (2020) claims to be successor to the CWI after the 2019 split.[14] ISA-R ( external faction)
- Internationalist Standpoint, IS (2022) split from International Socialist Alternative.[15]
- Committee for Revolutionary International Regroupment (CRIR), founded by groups originating from the USFI and IWL-FI[16]
- Liaison Committee for the Reconstruction of the Fourth International (CERCI), founded by the Bolivian party POR which broke off with the original Fourth International in the 1950s.[17]
- International Revolutionary Workers' Current – Fourth International (CORI-QI)[18]
- International Committee for the Reconstruction of the LIT of Nahuel Moreno (CIR)[19]
- La Marx International, founded by the Nuevo PST in Argentina[20][21]
- Socialism or Barbarism, founded by the Nuevo MAS in Argentina.[22]
- Partido Obrero affiliated International Debates website
- Organizing Committee for the Reconstitution of the Fourth International (CORQI)
- COI-IWC
Internationals that emerged from the International Committee of the Fourth International (ICFI)
[edit]- International Committee of the Fourth International (WRP), ICFI (1953)[23]
- International Communist League (Fourth Internationalist), ICL-FI) (1974) previously the international Spartacist tendency which split from the ICFI.[24]
- International Bolshevik Tendency, IBT (1982) formed by expelled members of the international Spartacist tendency.[25]
- International Trotskyist Committee, ITC (1984), founded by former members of the defunct Trotskyist International Liaison Committee. The latter was founded by expelled members of the ICFI in 1974.[26]
- International Committee of the Fourth International (SEP), ICFI (1985)[27]
- League for the Fourth International, LFI (1998).[13]
- Organising Committee for the Reconstitution of the Fourth International, OCRFI (2016)[28]
- Bolshevik Tendency, (2018) split from IBT.[29]
- Liaison Committee for the Fourth International, founded by former members of the ITC.[30][31]
Others
[edit]- Internationalist Communist Union, ICU (1976)[32]
- Permanent Revolution Collective[33]

Defunct
[edit]- Liaison Committee for a Revolutionary Workers International, founded by former militants of the Argentinian MAS and PO[34][35]
- Committee for a Workers' International (CWI), 1974–2019 – split into Committee for a Workers' International (Refounded) and International Socialist Alternative
- Coordinating Committee for the Refoundation of the Fourth International, CCRCI (2004-2020)
- International League for the Reconstruction of the Fourth International (ILRFI), 1976–1995[citation needed]
- Workers International to Rebuild the Fourth International (WIRFI)[36]
- International Revolutionary Marxist Tendency (TMRI), 1965–1992[1]
- Permanent Revolution
- Revolutionary Workers Ferment (Fomento Obrero Revolucionario, FOR)[1]
- Trotskyist International Liaison Committee, 1979–1984[1][37]
- Tendencia Cuartainternacionalista[38][39][40][41]
- Fourth International (ICR), also called FI (La Verité) or FI (International Secretariat)[42] 1981–2015
- Socialist Network[43] (Post-Trotskyist, split from IMT)
- International Trotskyist Opposition] (ITO) 2022–2025 (Dissolved into LIS-ISL)[44]
- League for the Fifth International (L5I), founded by expelled members of the IST.[45] (1989-2025)
See also
[edit]References
[edit]- 1 2 3 4 Kelly, John (2018). Contemporary Trotskyism. Taylor & Francis. ISBN 9781317368946.
- ↑ "Refounding the Committee for a Workers' International on the basis of a Trotskyist programme and method". socialistworld.net. Committee for a Workers' International. 25 July 2019. Retrieved 28 October 2020.
- ↑ "International Socialist Tendency". internationalsocialists.org.
- ↑ "IWL – FI – International Workers League – Fourth International – IWL – FI". Litci.org. 14 September 2017.
- ↑ "Trotskyist Fraction Fourth International". Ft-ci.org. Archived from the original on 2018-02-20. Retrieved 2018-09-20.
- ↑ "In Defense of Marxism". Marxist.com. 12 February 2024.
- ↑ "Home". Uit-ci.org (in European Spanish). 2021-03-14. Retrieved 2021-08-24.
- ↑ "1998 Platform of the Internationalist Bolshevik Tendency (TBI) against a current that liquidates Trotskyism – Our split with the PTS" (PDF). Flti-ci.org.
- ↑ ".::: FLTI :::". Flti-ci.org. Retrieved 2021-09-13.
- ↑ "Quienes somos". Cor-digital.org. Retrieved August 17, 2026.
- ↑ "Home – TRCI". trci-web.org. Retrieved 2021-08-21.
- ↑ "Sections and Activists of the RCIT". thecommunists.net.
- 1 2 Kelly, John (2018-03-14). Contemporary Trotskyism: Parties, Sects and Social Movements in Britain. London: Routledge. p. 219. ISBN 9781315671048.
- ↑ INTERNATIONAL SOCIALIST ALTERNATIVE EDITORIAL BOARD (8 February 2020). "International Socialist Alternative Launched". International Socialist Alternative. International Socialist Alternative. Retrieved 28 October 2020.
- ↑ "Launching Internationalist Standpoint". internationaliststandpoint.org. 31 January 2022.
- ↑ "Committee for Revolutionary International Regroupment (CRIR)". Freedom Socialist Party. Retrieved 2020-04-19.
- ↑ "Partido Obrero Revolucionario". Partido Obrero Revolucionario (in Spanish). 2025-05-09. Retrieved 2025-05-11.
- ↑ "Manifiesto constitutivo de la Corriente Obrera Revolucionaria Internacional – Cuarta internacional". Corici.org. Retrieved 2026-08-17.
- ↑ "Manifiesto del Comité por la Reconstrucción (CIR)". Vozdelostrabajadores.cl. Retrieved 2026-08-17.
- ↑ "La Marx". Revolucion.org.es. Retrieved 2026-08-09.
- ↑ "Nuevo PST". Revolucion.org.es (in Spanish). 2026-05-19. Retrieved 2026-08-09.
- ↑ "Izquierda Web". Izquierdaweb.com (in Spanish). 2026-08-13. Retrieved 2026-08-14.
- ↑ "International". Wrp.org.uk. Retrieved August 17, 2026.
- ↑ "International Communist League". Icl-fi.org.
- ↑ "International Bolshevik Tendency". Bolshevik.org.
- ↑ "International Trotskyist Committee" (PDF). itc4.org.
- ↑ "World Socialist Web Site – Marxist analysis, international working class struggles & the fight for socialism". Wsws.org.
- ↑ "Socialist Organiser : Who We Are and What We Stand For". Socialistorganiser.org. Retrieved 2026-08-17.
- ↑ "Bolshevik Tendency – For the rebirth of the Fourth International!". Bolshevik Tendency. Retrieved 2021-08-24.
- ↑ "The Degeneration of the Revolutionary Internationalist League/ITC". Socialist Fight. 2017-11-26. Retrieved 2025-01-18.
- ↑ LCFI Draft Programme, en inglés, consultado el 12/08/2023.
- ↑ "Internationalist Communist Union – Workers of the world, unite!". Union-communiste.org.
- ↑ "Permanent Revolution Collective". Revolucionpermanente.com. Retrieved 2021-09-13.
- ↑ "Se realizó el V Congreso del PCO" (in Spanish). 2021-05-03. Retrieved 2024-12-12.
- ↑ "INTERCAMBIO DE CORRESPONDENCIA CON LA LCT". NTI-CI (in Spanish). 2023-07-17. Retrieved 2025-01-21.
- ↑ "wirfi – Workers International to rebuild the 4th International". Workersinternational.info. Retrieved 2021-08-24.
- ↑ "The Workers Socialist League". Splits and Fusions. 2017-10-11. Retrieved 2025-05-11.
- ↑ Revisitas Internacionalismo Publicadas por la TCI, in Spanish, consulted on 4/8/2023.
- ↑ O marxismo depois de Marx e Engels, in portuguese, consulted on 4/8/2023.
- ↑ Boletim do Comitê de Enlace pela Reconstrução da IV Internacional Publicação trimestral do Comitê de Enlace pela Reconstrução da IV Internacional – Versão em Português – Outubro de 2010, in portuguese, consulted on 4/8/2023.
- ↑ The Fourth Internationalist Tendency, consulted on 4/8/2023.
- ↑ "Fourth International". Archived from the original on 2015-04-15. Retrieved 2015-04-17.
- ↑ "The Socialist Network". The Socialist Network. Retrieved 2021-08-21.
- ↑ "International Trotskyist Opposition : Dichiarazione di principi dell'Opposizione Trotskista Internazionale". Ito-oti.org. Retrieved 2026-08-17.
- ↑ "League for the Fifth International – Fighting for a new world party of socialist revolution". Fifthinternational.org.