International Meeting of Communist and Workers' Parties

| 21–23 May 1999

| {{flag|Greece}}

| Athens

| Communist Party of Greece

| 23–26 June 2000

| {{flag|Greece}}

| Athens

| Communist Party of Greece

| 22–24 June 2001

| {{flag|Greece}}

| Athens

| Communist Party of Greece

| 21–23 June 2002

| {{flag|Greece}}

| Athens

| Communist Party of Greece

| 19–21 June 2003

| {{flag|Greece}}

| Athens

| Communist Party of Greece

| 8–10 October 2004

| {{flag|Greece}}

| Athens

| Communist Party of Greece

| 18–20 November 2005

| {{flag|Greece}}

| Athens

| Communist Party of Greece

| 3–5 November 2007

| {{flag|Belarus}}

| Minsk

| Communist Party of Belarus

| 21–23 November 2008

| {{flag|Brazil}}

| São Paulo

| Communist Party of Brazil

| 20–22 November 2009

| {{flag|India}}

| New Delhi

| Communist Party of India (Marxist)
Communist Party of India

| 3–5 December 2010

| {{flag|South Africa}}

| Johannesburg

| South African Communist Party

| 9–11 December 2011

| {{flag|Greece}}

| Athens

| Communist Party of Greece

| 22–25 November 2012

| {{flag|Lebanon}}

| Beirut

| Lebanese Communist Party

| 8–10 November 2013

| {{flag|Portugal}}

| Lisbon

| Portuguese Communist Party

| 13–15 November 2014

| {{flag|Ecuador}}

| Guayaquil

| Communist Party of Ecuador

| 30 October – 1 November 2015

| {{flag|Turkey}}

| Istanbul

| Communist Party of Turkey

| 28–30 October 2016

| {{flag|Vietnam}}

| Hanoi

| Communist Party of Vietnam

| 5–7 November 2017

| {{flag|Russia}}

| Moscow
Saint Petersburg

| Communist Party of the Russian Federation

| 23–25 November 2018

| {{flag|Greece}}

| Athens

| Communist Party of Greece

| 18–20 October 2019

| {{flag|Turkey}}

| İzmir

| Communist Party of Turkey
Communist Party of Greece

| 27–29 October 2022

| {{flag|Cuba}}

| Havana

| Communist Party of Cuba

| 20–22 October 2023

| {{flag|Turkey}}

| İzmir

| Communist Party of Turkey

! Country

! Party

!2023{{Cite web |title=Solidnet {{!}} 23rd IMCWP, Participant Parties |url=http://www.solidnet.org/article/23rd-IMCWP-Participant-Parties/ |access-date=2023-10-31 |website=solidnet.org |archive-date=1 November 2023 |archive-url=https://web.archive.org/web/20231101144216/http://www.solidnet.org/article/23rd-IMCWP-Participant-Parties/ |url-status=live}}

! 2022{{cite web | url=http://www.solidnet.org/meetings-and-statements/imcwp/22nd-International-Meeting-of-Communist-Workers-Parties/ | title=Solidnet | 22nd International Meeting of Communist & Workers Parties | access-date=29 October 2022 | archive-date=17 October 2023 | archive-url=https://web.archive.org/web/20231017133222/http://www.solidnet.org/meetings-and-statements/imcwp/22nd-International-Meeting-of-Communist-Workers-Parties/ | url-status=live}}

! 2021{{cite web |title=Extraordinary TeleConference of the International Meeting of Communist and Workers Parties |url=http://www.solidnet.org/meetings-and-statements/imcwp/Extraordinary-TeleConference-of-the-International-Meeting-of-Communist-and-Workers-Parties/ |access-date=5 January 2022 |website=solidnet.org |publisher=International Meeting of Communist and Workers Parties |archive-date=7 October 2023 |archive-url=https://web.archive.org/web/20231007125556/http://www.solidnet.org/meetings-and-statements/imcwp/Extraordinary-TeleConference-of-the-International-Meeting-of-Communist-and-Workers-Parties/ |url-status=live}}

! 2019{{cite web|title=21 IMCWP, Participants List|url=https://www.solidnet.org/article/21-IMCWP-Participants-List/|website=Solidnet|access-date=19 March 2020|archive-date=10 February 2021|archive-url=https://web.archive.org/web/20210210190433/https://www.solidnet.org/article/21-IMCWP-Participants-List/}}

! 2018{{cite web |title=20 IMCWP, Participants List |url=http://www.solidnet.org/article/20-IMCWP-Participants-List/ |website=SolidNet|access-date=16 February 2019 |archive-url=https://web.archive.org/web/20190717032251/http://www.solidnet.org/article/20-IMCWP-Participants-List/ |archive-date=17 July 2019 |url-status=live}}

! 2017{{cite web |title=List of Participants |url=http://www.solidnet.org/.galleries/documents/Participants-List.pdf |website=Solidnet |access-date=21 November 2019 |archive-url=https://web.archive.org/web/20181221144717/http://www.solidnet.org/.galleries/documents/Participants-List.pdf |archive-date=21 December 2018 |url-status=live}}

! 2016{{cite web |title=共产党和工人党国际会议中的分歧与我们的应对 |url=http://www.ccnumpfc.com/index.php/View/48.html |website=ccnumpfc.com |access-date=22 November 2019 |archive-url=https://web.archive.org/web/20190223053617/http://www.ccnumpfc.com/index.php/View/48.html |archive-date=23 February 2019 |url-status=live}}

! 2015{{cite web |title=17 IMCWP, List of Participants |url=http://www.solidnet.org/article/85490f4a-e2d1-11e8-a7f8-42723ed76c54/ |website=Solidnet |access-date=21 November 2019 |archive-date=11 January 2021 |archive-url=https://web.archive.org/web/20210111152759/http://www.solidnet.org/article/85490f4a-e2d1-11e8-a7f8-42723ed76c54/ |url-status=live}}

! 2014{{cite web |title=16 IMCWP, List of Participants |url=http://www.solidnet.org/article/9790da9b-e2b9-11e8-a7f8-42723ed76c54/ |website=Solidnet |access-date=21 November 2019 |archive-date=12 January 2021 |archive-url=https://web.archive.org/web/20210112122638/http://www.solidnet.org/article/9790da9b-e2b9-11e8-a7f8-42723ed76c54/ |url-status=live}}

! 2013{{cite web |title=Για τη συζήτηση και τα αποτελέσματα της 15ης Διεθνούς Συνάντησης |url=https://www.rizospastis.gr/story.do?id=7703937 |website=rizospastis.gr |date=17 November 2013 |access-date=23 November 2019 |archive-date=31 March 2021 |archive-url=https://web.archive.org/web/20210331210746/https://www.rizospastis.gr/story.do?id=7703937 |url-status=live}}

! 2012{{cite web |title=Στο Λίβανο η Συνάντηση Κομμουνιστικών και Εργατικών Κομμάτων |url=https://www.rizospastis.gr/story.do?id=7148931 |website=rizospastis.gr |date=18 November 2012 |access-date=23 November 2019 |archive-date=31 March 2021 |archive-url=https://web.archive.org/web/20210331215636/https://www.rizospastis.gr/story.do?id=7148931 |url-status=live}}

! 2011

! 2010

! 2009{{Cite web |url=http://www.solidnet.org/11-international-meeting-of-communist-and-workers-parties/11-imcwp-press-communique |title=11 IMCWP, Press Communique |access-date=11 December 2014 |archive-url=https://web.archive.org/web/20150924103957/http://www.solidnet.org/11-international-meeting-of-communist-and-workers-parties/11-imcwp-press-communique |archive-date=24 September 2015 |url-status=live}}

! 2008{{Cite web |url=http://www.solidnet.org/10th-international-meeting-of-communist-and-workers-parties/10-imcwp-press-release-by-cp-of-brazil-ensp-pt |title=10 IMCWP, Press Release by CP of Brazil |access-date=11 December 2014 |archive-url=https://web.archive.org/web/20150924103800/http://www.solidnet.org/10th-international-meeting-of-communist-and-workers-parties/10-imcwp-press-release-by-cp-of-brazil-ensp-pt |archive-date=24 September 2015 |url-status=live}}

! 2007{{Cite web |url=http://www.solidnet.org/old/cgi-bin/agent5953.html?meetings%2F472=International_Meeting_of_Communist_And_Workers_Parties%2C_Minsk_03_to_05_November_2007%2F010%3DPress_Release%2F100pressrelease-icm20nov07.doc |title=Press Release |access-date=2 December 2019 |archive-url=https://web.archive.org/web/20150924125210/http://www.solidnet.org/old/cgi-bin/agent5953.html?meetings%2F472=International_Meeting_of_Communist_And_Workers_Parties%2C_Minsk_03_to_05_November_2007%2F010%3DPress_Release%2F100pressrelease-icm20nov07.doc |archive-date=24 September 2015 |url-status=live}}

! 2006

! 2005

! 2004

! 2003{{cite web |last1=Batchell |first1=John |title=World conference hits war, capitalist crisis |url=https://www.peoplesworld.org/article/world-conference-hits-war-capitalist-crisis/ |website=Peoples World |date=18 July 2003 |access-date=23 November 2019 |archive-url=https://web.archive.org/web/20191123005521/https://www.peoplesworld.org/article/world-conference-hits-war-capitalist-crisis/ |archive-date=23 November 2019 |url-status=live}}

! 2002{{Cite web |title=Solidnet {{!}} 4 IMCWP, List of participants |url=http://solidnet.org/article/2af044d3-e2d9-11e8-a7f8-42723ed76c54/ |access-date=2023-10-17 |website=solidnet.org |archive-date=3 August 2022 |archive-url=https://web.archive.org/web/20220803200133/http://www.solidnet.org/article/2af044d3-e2d9-11e8-a7f8-42723ed76c54/ |url-status=live}}

! 2001{{cite web |title=Contributions |url=https://www.solidnet.org/article/87ae9496-e2ba-11e8-a7f8-42723ed76c54/ |website=solidnet.org |access-date=23 November 2019 |archive-date=11 January 2021 |archive-url=https://web.archive.org/web/20210111180632/https://www.solidnet.org/article/87ae9496-e2ba-11e8-a7f8-42723ed76c54/}}

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|✓{{Cite web |title=Intervenção do PCB no XXII EIPCO {{!}} Partido Comunista Brasileiro |url=https://pcb.org.br/portal2/29452 |access-date=2022-12-16 |website=pcb.org.br |date=6 November 2022 |archive-date=16 December 2022 |archive-url=https://web.archive.org/web/20221216180840/https://pcb.org.br/portal2/29452 |url-status=live}}

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|✓{{Cite web |title=IMCWP Meeting Held for the First Time in Cuba {{!}} Peoples Democracy |url=https://peoplesdemocracy.in/2022/1030_pd/imcwp-meeting-held-first-time-cuba |access-date=2022-11-06 |website=peoplesdemocracy.in |archive-date=6 November 2022 |archive-url=https://web.archive.org/web/20221106112843/https://peoplesdemocracy.in/2022/1030_pd/imcwp-meeting-held-first-time-cuba |url-status=live}}

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|Communist Party of Kenya

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|Communist Party (Switzerland)

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! scope="row"| Algerian Party for Democracy and Socialism

| Collective leadership
Central Committee

| align="center" | {{Composition bar|0|462|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Armenian Communist Party

| Ruben Tovmasyan
General Secretary

| align="center" | {{Composition bar|0|131|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Australia

| Hannah Middleton
General Secretary

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Azerbaijan

| Telman Nurullayev
General Secretary

| align="center" | {{Composition bar|0|125|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| National Liberation Front – Bahrain

| Hasan Madau
General Secretary

| align="center" | {{Composition bar|0|40|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Belarus

| Igor Karpenko
General Secretary

| align="center" | {{Composition bar|6|110|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Workers' Party of Belgium

| Peter Mertens
President

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Brazilian Communist Party

| Ivan Pinheiro
General Secretary

| align="center" | {{Composition bar|0|513|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Bulgaria

| Aleksandar Paunov
General Secretary

| align="center" | {{Composition bar|1|240|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Communist Party of Canada

| Miguel Figueroa
General Secretary

| align="center" | {{Composition bar|0|308|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Communist Party of Chile

| Lautaro Carmona Soto
General Secretary

| align="center" | {{Composition bar|0|120|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Chinese Communist Party

| Hu Jintao
First Secretary

| align="center" | {{Composition bar|2099|2987|hex=#DC241f}}2002–2003 election

| align="center" | Participated

! scope="row"| Communist Party of Cuba

| Fidel Castro
First Secretary

| align="center" | {{Composition bar|614|614|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Progressive Party of Working People

| Demetris Christofias
General Secretary

| align="center" | {{Composition bar|18|56|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Bohemia and Moravia

| Vojtěch Filip
Chairman

| align="center" | {{Composition bar|26|200|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party in Denmark

| Betty Frydensbjerg Carlsson
Chairman

| align="center" | {{Composition bar|0|175|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Finland

| Yrjö Hakanen
Chairman

| align="center" | {{Composition bar|0|200|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| United Communist Party of Georgia

| Panteleimon Giorgadze
General Secretary

| align="center" | Did not participate

| align="center" | Participated

! scope="row"| German Communist Party

| Bettina Jürgensen
Chairman

| align="center" | {{Composition bar|0|620|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Communist Party of Britain

| Robert Griffiths
General Secretary

| align="center" | {{Composition bar|0|646|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Communist Party of Greece

| Aleka Papariga
General Secretary

| align="center" | {{Composition bar|22|300|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Hungarian Communist Workers' Party

| Gyula Thürmer
Chairman

| align="center" | {{Composition bar|0|386|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of India

| Ardhendu Bhushan Bardhan
General Secretary

| align="center" | {{Composition bar|10|545|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Tudeh Party of Iran

| Mohammad Omidvar
General Secretary

| align="center" | Illegal

| align="center" | Participated

! scope="row"| Iraqi Communist Party

| Hamid Majid Mousa
General Secretary

| align="center" | {{Composition bar|0|275|hex=#DC241f}}December 2005 election

| align="center" | Participated

! scope="row"| Communist Party of Ireland

| Eugene McCartan
General Secretary

| align="center" | {{Composition bar|0|166|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Israel

| Collective leadership
Central Committee

| align="center" | {{Composition bar|3|120|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Party of Italian Communists

| Oliviero Diliberto
General Secretary

| align="center" | {{Composition bar|16|630|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Jordanian Communist Party

| Munir Hamarneh
General Secretary

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Workers' Party of Korea

| Kim Jong-il
General Secretary

| align="center" | {{Composition bar|606|687|hex=#DC241f}}2003 election

| align="center" | Participated

! scope="row"| Party of Communists of Kyrgyzstan

| Iskhak Masaliyev
General Secretary

| align="center" | {{Composition bar|1|75|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Lao People's Revolutionary Party

| Choummaly Sayasone
General Secretary

| align="center" | {{Composition bar|113|115|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Socialist Party of Latvia

| Alfrēds Rubiks
Chairman

| align="center" | {{Composition bar|4|100|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Lebanese Communist Party

| Khaled Hadadi
General Secretary

| align="center" | {{Composition bar|0|128|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Socialist Party of Lithuania

| Giedrius Petružis
Chairman

| align="center" | Did not participate

| align="center" | Participated

! scope="row"| Communist Party of Luxembourg

| Ali Ruckert
General Secretary

| align="center" | {{Composition bar|0|60|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Communist Party of Macedonia

|

| align="center" | Did not participate

| align="center" | Participated

! scope="row"| Party of Mexican Communists

| Pável Blanco Cabrera
General Secretary

| align="center" | {{Composition bar|0|500|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Party of Communists of the Republic of Moldova

| Vladimir Voronin
First Secretary

| align="center" | {{Composition bar|56|101|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Communist Party of Nepal (Unified Marxist–Leninist)

| Jhala Nath Khanal
Chairman

| align="center" | {{Composition bar|71|205|hex=#DC241f}}1999 election

| align="center" | Participated

! scope="row"| Communist Party of Norway

| Zafer Gözet
Chairman

| align="center" | {{Composition bar|0|169|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Communist Party of Pakistan

|

| align="center" | {{Composition bar|0|342|hex=#DC241f}}2002 election

| align="center" | Participated

! scope="row"| Communist Party of the Philippines – 1930

| Pedro Baguisa
General Secretary

| align="center" | Illegal

| align="center" | Participated

! scope="row"| Communist Party of Poland

| Józef Łachut
Chairman

| align="center" | {{Composition bar|0|460|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Portuguese Communist Party

| Jerónimo de Sousa
General Secretary

| align="center" | {{Composition bar|14|230|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Communist Party of the Russian Federation

| Gennady Zyuganov
Chairman

| align="center" | {{Composition bar|52|450|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| New Communist Party of Yugoslavia

| Branko Kitanović
Executive Secretary

| align="center" | {{Composition bar|0|250|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Slovakia

| Joseph Shevts
General Secretary

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Spain

| Francisco Frutos
General Secretary

| align="center" | {{Composition bar|5|350|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Communist Party of Sri Lanka

| D. E. W. Gunasekera
General Secretary

| align="center" | {{Composition bar|1|225|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Sudanese Communist Party

| Muhammad Ibrahim Nugud
General Secretary

| align="center" | Illegal

| align="center" | Participated

! scope="row"| Communist Party of Sweden

| Victor Diaz de Filippi
Chairman

| align="center" | {{Composition bar|0|349|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Syrian Communist Party (Bakdash)

| Ammar Bagdache
General Secretary

| align="center" | {{Composition bar|5|250|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Turkey

| Collective leadership
Central Committee

| align="center" | {{Composition bar|0|550|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Union of Communists of Ukraine

| Collective leadership
Central Committee

| align="center" | {{Composition bar|0|450|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Uruguay

| Eduardo Lorier
General Secretary

| align="center" | {{Composition bar|50|99|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Communist Party USA

| Sam Webb
Chairman

| align="center" | {{Composition bar|0|435|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Venezuela

| Oscar Figuera
General Secretary

| align="center" | {{Composition bar|7|167|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Communist Party of Vietnam

| Nông Đức Mạnh
General Secretary

| align="center" | {{Composition bar|458|500|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Algerian Party for Democracy and Socialism

| Collective leadership
Central Committee

| align="center" | {{Composition bar|0|462|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Argentina

| Patricio Echegaray
General Secretary

| align="center" | {{Composition bar|0|257|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Belarus

| Igor Karpenko
General Secretary

| align="center" | {{Composition bar|6|110|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Workers' Party of Belgium

| Peter Mertens
President

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Brazilian Communist Party

| Ivan Pinheiro
General Secretary

| align="center" | {{Composition bar|0|513|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Bulgaria

| Aleksandar Paunov
General Secretary

| align="center" | {{Composition bar|1|240|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Communist Party of Canada

| Miguel Figueroa
General Secretary

| align="center" | {{Composition bar|0|308|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Communist Party of Chile

| Lautaro Carmona Soto
General Secretary

| align="center" | {{Composition bar|0|120|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Chinese Communist Party

| Hu Jintao
First Secretary

| align="center" | {{Composition bar|2099|2987|hex=#DC241f}}2007–2008 election

| align="center" | Participated

! scope="row"| Colombian Communist Party

| Jaime Caycedo Turriago
Chairman

| align="center" | {{Composition bar|0|162|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Cuba

| Fidel Castro
First Secretary

| align="center" | {{Composition bar|614|614|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Progressive Party of Working People

| Demetris Christofias
General Secretary

| align="center" | {{Composition bar|18|56|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Bohemia and Moravia

| Vojtěch Filip
Chairman

| align="center" | {{Composition bar|26|200|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party in Denmark

| Betty Frydensbjerg Carlsson
Chairman

| align="center" | {{Composition bar|0|175|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Ecuador

| Winston Alarcón Elizalde
General Secretary

| align="center" | {{Composition bar|0|137|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Finland

| Yrjö Hakanen
Chairman

| align="center" | {{Composition bar|0|200|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| French Communist Party

| Marie-George Buffet
National Secretary

| align="center" | {{Composition bar|7|577|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Unified Communist Party of Georgia

| Panteleimon Giorgadze
National Secretary

| align="center" | Did not participate

| align="center" | Participated

! scope="row"| German Communist Party

| Bettina Jürgensen
Chairman

| align="center" | {{Composition bar|0|620|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Communist Party of Britain

| Robert Griffiths
General Secretary

| align="center" | {{Composition bar|0|646|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Communist Party of Greece

| Aleka Papariga
General Secretary

| align="center" | {{Composition bar|22|300|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Hungarian Communist Workers' Party

| Gyula Thürmer
Chairman

| align="center" | {{Composition bar|0|386|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of India

| Ardhendu Bhushan Bardhan
General Secretary

| align="center" | {{Composition bar|10|545|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Tudeh Party of Iran

| Mohammad Omidvar
General Secretary

| align="center" | Illegal

| align="center" | Participated

! scope="row"| Iraqi Communist Party

| Hamid Majid Mousa
General Secretary

| align="center" | {{Composition bar|0|275|hex=#DC241f}}December 2005 election

| align="center" | Participated

! scope="row"| Communist Party of Ireland

| Eugene McCartan
General Secretary

| align="center" | {{Composition bar|0|166|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Refoundation Party

| Paolo Ferrero
General Secretary

| align="center" | {{Composition bar|0|630|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Workers' Party of Korea

| Kim Jong-il
General Secretary

| align="center" | {{Composition bar|606|687|hex=#DC241f}}2003 election

| align="center" | Participated

! scope="row"| Party of Communists of Kyrgyzstan

| Iskhak Masaliyev
General Secretary

| align="center" | {{Composition bar|1|75|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Lao People's Revolutionary Party

| Choummaly Sayasone
General Secretary

| align="center" | {{Composition bar|113|115|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Socialist Party of Latvia

| Alfrēds Rubiks
Chairman

| align="center" | {{Composition bar|4|100|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Lebanese Communist Party

| Khaled Hadadi
General Secretary

| align="center" | {{Composition bar|0|128|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Luxembourg

| Ali Ruckert
General Secretary

| align="center" | {{Composition bar|0|60|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Party of Mexican Communists

| Pável Blanco Cabrera
General Secretary

| align="center" | {{Composition bar|0|500|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Nepal (Unified Marxist–Leninist)

| Jhala Nath Khanal
Chairman

| align="center" | {{Composition bar|109|601|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| New Communist Party of the Netherlands

| Job Pruijser
Chairman

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Norway

| Zafer Gözet
Chairman

| align="center" | {{Composition bar|0|169|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Palestinian People's Party

| Bassam as-Salhi
General Secretary

| align="center" | {{Composition bar|0|272|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| People's Party of Panama

| Rubén Dario Sousa Batista
General Secretary

| align="center" | Not recognized

| align="center" | Participated

! scope="row"| Communist Party of Paraguay

| Najeeb Amado
General Secretary

| align="center" | Did not participate

| align="center" | Participated

! scope="row"| Communist Party of Peru – Red Fatherland

| Alberto Moreno
General Secretary

| align="center" | Did not participate

| align="center" | Participated

! scope="row"| Portuguese Communist Party

| Jerónimo de Sousa
General Secretary

| align="center" | {{Composition bar|14|230|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Communist Party of the Russian Federation

| Gennady Zyuganov
Chairman

| align="center" | {{Composition bar|52|450|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| New Communist Party of Yugoslavia

| Branko Kitanović
Executive Secretary

| align="center" | {{Composition bar|0|250|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| South African Communist Party

| Blade Nzimande
General Secretary

| align="center" | {{Composition bar|0|400|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Communist Party of the People of Spain

| Carmelo Suárez
General Secretary

| align="center" | {{Composition bar|0|350|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Communist Party of Sri Lanka

| D. E. W. Gunasekera
General Secretary

| align="center" | {{Composition bar|1|225|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Syrian Communist Party (Bakdash)

| Ammar Bagdache
General Secretary

| align="center" | {{Composition bar|5|250|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Sweden

| Victor Diaz de Filippi
Chairman

| align="center" | {{Composition bar|0|349|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Turkey

| Collective leadership
Central Committee

| align="center" | {{Composition bar|0|550|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Union of Communists of Ukraine

| Collective leadership
Central Committee

| align="center" | {{Composition bar|0|450|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Uruguay

| Eduardo Lorier
General Secretary

| align="center" | {{Composition bar|50|99|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Communist Party USA

| Sam Webb
Chairman

| align="center" | {{Composition bar|0|435|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Communist Party of Venezuela

| Oscar Figuera
General Secretary

| align="center" | {{Composition bar|7|167|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Communist Party of Vietnam

| Nông Đức Mạnh
General Secretary

| align="center" | {{Composition bar|458|500|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Argentina

| Patricio Echegaray
General Secretary

| align="center" | {{Composition bar|0|257|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Australia

| Hannah Middleton
General Secretary

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Workers Party of Bangladesh

| Syed Abu Zafar
General Secretary

| align="center" | {{Composition bar|2|300|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Workers' Party of Belgium

| Peter Mertens
President

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Bolivia

|

| align="center" | Illegal

| align="center" | Sent message

! scope="row"| Brazilian Communist Party

| Ivan Pinheiro
General Secretary

| align="center" | {{Composition bar|0|513|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Canada

| Miguel Figueroa
General Secretary

| align="center" | {{Composition bar|0|308|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Chinese Communist Party

| Hu Jintao
First Secretary

| align="center" | {{Composition bar|2099|2987|hex=#DC241f}}2007–2008 election

| align="center" | Participated

! scope="row"| Communist Party of Cuba

| Fidel Castro
First Secretary

| align="center" | {{Composition bar|614|614|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Progressive Party of Working People

| Andros Kyprianou
General Secretary

| align="center" | {{Composition bar|18|56|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Bohemia and Moravia

| Vojtěch Filip
Chairman

| align="center" | {{Composition bar|26|200|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party in Denmark

| Betty Frydensbjerg Carlsson
Chairman

| align="center" | {{Composition bar|0|175|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Finland

| Yrjö Hakanen
Chairman

| align="center" | {{Composition bar|0|200|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| French Communist Party

| Marie-George Buffet
National Secretary

| align="center" | {{Composition bar|7|577|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| German Communist Party

| Bettina Jürgensen
Chairman

| align="center" | {{Composition bar|0|620|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of Britain

| Robert Griffiths
General Secretary

| align="center" | {{Composition bar|0|650|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Greece

| Aleka Papariga
General Secretary

| align="center" | {{Composition bar|22|300|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Hungarian Communist Workers' Party

| Gyula Thürmer
Chairman

| align="center" | {{Composition bar|0|386|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of India

| Ardhendu Bhushan Bardhan
General Secretary

| align="center" | {{Composition bar|4|545|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Tudeh Party of Iran

| Mohammad Omidvar
General Secretary

| align="center" | Illegal

| align="center" | Participated

! scope="row"| Iraqi Communist Party

| Hamid Majid Mousa
General Secretary

| align="center" | {{Composition bar|0|325|hex=#DC241f}}December 2005 election

| align="center" | Participated

! scope="row"| Communist Party of Ireland

| Eugene McCartan
General Secretary

| align="center" | {{Composition bar|0|166|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Israel

| Collective leadership
Central Committee

| align="center" | {{Composition bar|4|120|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Refoundation Party

| Paolo Ferrero
General Secretary

| align="center" | {{Composition bar|0|630|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Workers' Party of Korea

| Kim Jong-il
General Secretary

| align="center" | {{Composition bar|606|687|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Party of Communists of Kyrgyzstan

| Iskhak Masaliyev
General Secretary

| align="center" | {{Composition bar|1|75|hex=#DC241f}}2005 election

| align="center" | Participated

! scope="row"| Lao People's Revolutionary Party

| Choummaly Sayasone
General Secretary

| align="center" | {{Composition bar|113|115|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Socialist Party of Latvia

| Alfrēds Rubiks
Chairman

| align="center" | {{Composition bar|3|100|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Lebanese Communist Party

| Khaled Hadadi
General Secretary

| align="center" | {{Composition bar|0|128|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of Luxembourg

| Ali Ruckert
General Secretary

| align="center" | {{Composition bar|0|60|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Party of Mexican Communists

| Pável Blanco Cabrera
General Secretary

| align="center" | {{Composition bar|0|500|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Nepal (Unified Marxist–Leninist)

| Jhala Nath Khanal
Chairman

| align="center" | {{Composition bar|109|601|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| New Communist Party of the Netherlands

| Job Pruijser
Chairman

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Norway

| Zafer Gözet
Chairman

| align="center" | {{Composition bar|0|169|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Palestinian People's Party

| Bassam as-Salhi
General Secretary

| align="center" | {{Composition bar|0|272|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Peruvian Communist Party

| Roberto De La Cruz Huaman
General Secretary

| align="center" | Did not participate

| align="center" | Participated

! scope="row"| Portuguese Communist Party

| Jerónimo de Sousa
General Secretary

| align="center" | {{Composition bar|15|230|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of the Russian Federation

| Gennady Zyuganov
Chairman

| align="center" | {{Composition bar|52|450|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| New Communist Party of Yugoslavia

| Branko Kitanović
Executive Secretary

| align="center" | {{Composition bar|0|250|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| South African Communist Party

| Blade Nzimande
General Secretary

| align="center" | {{Composition bar|0|400|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of Spain

| José Luis Centella
General Secretary

| align="center" | {{Composition bar|2|350|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Communist Party of Sri Lanka

| D. E. W. Gunasekera
General Secretary

| align="center" | {{Composition bar|1|225|hex=#DC241f}}2004 election

| align="center" | Participated

! scope="row"| Syrian Communist Party (Bakdash)

| Ammar Bagdache
General Secretary

| align="center" | {{Composition bar|5|250|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Sweden

| Victor Diaz de Filippi
Chairman

| align="center" | {{Composition bar|0|349|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Turkey

| Collective leadership
Central Committee

| align="center" | {{Composition bar|0|550|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party USA

| Sam Webb
Chairman

| align="center" | {{Composition bar|0|435|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Communist Party of Vietnam

| Nông Đức Mạnh
General Secretary

| align="center" | {{Composition bar|458|500|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Argentina

| Patricio Echegaray
General Secretary

| align="center" | {{Composition bar|0|257|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Australia

| Hannah Middleton
General Secretary

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2007

| align="center" | Participated

! scope="row"| Communist Party of Azerbaijan

| Telman Nurullayev
General Secretary

| align="center" | {{Composition bar|0|125|hex=#DC241f}}2010

| align="center" | Participated

! scope="row"| Workers Party of Bangladesh

| Syed Abu Zafar
General Secretary

| align="center" | {{Composition bar|2|300|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Communist Party of Belarus

| Igor Karpenko
General Secretary

| align="center" | {{Composition bar|6|110|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Workers' Party of Belgium

| Peter Mertens
President

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Brazilian Communist Party

| Ivan Pinheiro
General Secretary

| align="center" | {{Composition bar|0|513|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party of Bulgaria

| Aleksandar Paunov
General Secretary

| align="center" | {{Composition bar|1|240|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of Canada

| Miguel Figueroa
General Secretary

| align="center" | {{Composition bar|0|308|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Chinese Communist Party

| Hu Jintao
First Secretary

| align="center" | {{Composition bar|2099|2987|hex=#DC241f}}2007–2008 election

| align="center" | Participated

! scope="row"| Communist Party of Cuba

| Fidel Castro
First Secretary

| align="center" | {{Composition bar|614|614|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Progressive Party of Working People

| Andros Kyprianou
General Secretary

| align="center" | {{Composition bar|18|56|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Bohemia and Moravia

| Vojtěch Filip
Chairman

| align="center" | {{Composition bar|26|200|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party in Denmark

| Betty Frydensbjerg Carlsson
Chairman

| align="center" | {{Composition bar|0|175|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Finland

| Yrjö Hakanen
Chairman

| align="center" | {{Composition bar|0|200|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| French Communist Party

| Pierre Laurent
National Secretary

| align="center" | {{Composition bar|7|577|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| German Communist Party

| Bettina Jürgensen
General Secretary

| align="center" | {{Composition bar|0|620|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of Britain

| Robert Griffiths
General Secretary

| align="center" | {{Composition bar|0|650|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party of Greece

| Aleka Papariga
General Secretary

| align="center" | {{Composition bar|22|300|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Hungarian Communist Workers' Party

| Gyula Thürmer
Chairman

| align="center" | {{Composition bar|0|386|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party of India

| Ardhendu Bhushan Bardhan
General Secretary

| align="center" | {{Composition bar|4|545|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Iraqi Communist Party

| Hamid Majid Mousa
General Secretary

| align="center" | {{Composition bar|0|325|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party of Ireland

| Eugene McCartan
General Secretary

| align="center" | {{Composition bar|0|166|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Israel

| Collective leadership
Central Committee

| align="center" | {{Composition bar|4|120|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Refoundation Party

| Paolo Ferrero
General Secretary

| align="center" | {{Composition bar|0|630|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Lebanese Communist Party

| Khaled Hadadi
General Secretary

| align="center" | {{Composition bar|0|128|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of Luxembourg

| Ali Ruckert
General Secretary

| align="center" | {{Composition bar|0|60|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of Nepal (Unified Marxist–Leninist)

| Jhala Nath Khanal
Chairman

| align="center" | {{Composition bar|109|601|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| New Communist Party of the Netherlands

| Job Pruijser
Chairman

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party of Norway

| Svend Haakon Jacobsen
Chairman

| align="center" | {{Composition bar|0|169|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Palestinian People's Party

| Bassam as-Salhi
General Secretary

| align="center" | {{Composition bar|0|272|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Peruvian Communist Party

| Roberto De La Cruz Huaman
General Secretary

| align="center" | Did not participate

| align="center" | Participated

! scope="row"| Portuguese Communist Party

| Jerónimo de Sousa
General Secretary

| align="center" | {{Composition bar|15|230|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of the Russian Federation

| Gennady Zyuganov
Chairman

| align="center" | {{Composition bar|52|450|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| New Communist Party of Yugoslavia

| Branko Kitanović
Executive Secretary

| align="center" | {{Composition bar|0|250|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| South African Communist Party

| Blade Nzimande
General Secretary

| align="center" | {{Composition bar|0|400|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of Spain

| José Luis Centella
General Secretary

| align="center" | {{Composition bar|2|350|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Communist Party of Sri Lanka

| D. E. W. Gunasekera
General Secretary

| align="center" | {{Composition bar|2|225|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Syrian Communist Party (Bakdash)

| Ammar Bagdache
General Secretary

| align="center" | {{Composition bar|5|250|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Turkey

| Collective leadership
Central Committee

| align="center" | {{Composition bar|0|550|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Ukraine

| Petro Symonenko
General Secretary

| align="center" | {{Composition bar|27|450|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party USA

| Sam Webb
Chairman

| align="center" | {{Composition bar|0|435|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party of Vietnam

| Nông Đức Mạnh
General Secretary

| align="center" | {{Composition bar|458|500|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Albania

| Hysni Milloshi
First Secretary

| align="center" | {{Composition bar|0|140|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Algerian Party for Democracy and Socialism

| Collective leadership
Central Committee

| align="center" | {{Composition bar|0|462|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Argentina

| Patricio Echegaray
General Secretary

| align="center" | {{Composition bar|0|257|hex=#DC241f}}2011 election

| align="center" | Sent message

! scope="row"| Armenian Communist Party

| Ruben Tovmasyan
General Secretary

| align="center" | {{Composition bar|0|131|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| Communist Party of Australia

| Hannah Middleton
General Secretary

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2007

| align="center" | Participated

! scope="row"| Communist Party of Azerbaijan

| Telman Nurullayev
General Secretary

| align="center" | {{Composition bar|0|125|hex=#DC241f}}2010

| align="center" | Participated

! scope="row"| Communist Party of Bangladesh

| Mujahidul Islam Selim
General Secretary

| align="center" | {{Composition bar|0|300|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Communist Party of Belarus

| Igor Karpenko
General Secretary

| align="center" | {{Composition bar|6|110|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Communist Party

| Pierre Beauvois
President

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2010 election

| align="center" | Sent message

! scope="row"| Communist Party of Bolivia

|

| align="center" | Illegal

| align="center" | Sent message

! scope="row"| Brazilian Communist Party

| Ivan Pinheiro
General Secretary

| align="center" | {{Composition bar|0|513|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party of Bulgaria

| Aleksandar Paunov
General Secretary

| align="center" | {{Composition bar|1|240|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of Canada

| Miguel Figueroa
General Secretary

| align="center" | {{Composition bar|0|308|hex=#DC241f}}2011 election

| align="center" | Participated

! scope="row"| Socialist Labour Party of Croatia

| Ivan Plješa
President

| align="center" | {{Composition bar|0|151|hex=#DC241f}}2011 election

| align="center" | Participated

! scope="row"| Communist Party of Cuba

| Raúl Castro
First Secretary

| align="center" | {{Composition bar|614|614|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Progressive Party of Working People

| Andros Kyprianou
General Secretary

| align="center" | {{Composition bar|19|56|hex=#DC241f}}2011 election

| align="center" | Participated

! scope="row"| Communist Party of Bohemia and Moravia

| Vojtěch Filip
Chairman

| align="center" | {{Composition bar|26|200|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party in Denmark

| Betty Frydensbjerg Carlsson
Chairman

| align="center" | {{Composition bar|0|179|hex=#DC241f}}2011 election

| align="center" | Participated

! scope="row"| Egyptian Communist Party

| Collective leadership
Central Committee

| align="center" | {{Composition bar|0|518|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party of Finland

| Yrjö Hakanen
Chairman

| align="center" | {{Composition bar|0|200|hex=#DC241f}}2011 election

| align="center" | Participated

! scope="row"| French Communist Party

| Pierre Laurent
National Secretary

| align="center" | {{Composition bar|15|577|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| United Communist Party of Georgia

| Nugzar Shalvovich Avaliani
National Secretary

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| German Communist Party

| Bettina Jürgensen
General Secretary

| align="center" | {{Composition bar|0|620|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of Britain

| Robert Griffiths
General Secretary

| align="center" | {{Composition bar|0|650|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party of Greece

| Aleka Papariga
General Secretary

| align="center" | {{Composition bar|22|300|hex=#DC241f}}2007 election

| align="center" | Participated

! scope="row"| People's Progressive Party

| Donald Ramotar
President

| align="center" | {{Composition bar|32|65|hex=#DC241f}}2011 election

| align="center" | Participated

! scope="row"| Hungarian Communist Workers' Party

| Gyula Thürmer
Chairman

| align="center" | {{Composition bar|0|386|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party of India

| Ardhendu Bhushan Bardhan
General Secretary

| align="center" | {{Composition bar|4|545|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Workers' Party of Korea

| Kim Jong-il
General Secretary

| align="center" | {{Composition bar|606|687|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Tudeh Party of Iran

| Mohammad Omidvar
General Secretary

| align="center" | Illegal

| align="center" | Sent message

! scope="row"| Iraqi Communist Party

| Hamid Majid Mousa
General Secretary

| align="center" | {{Composition bar|0|325|hex=#DC241f}}2010 election

| align="center" | Sent message

! scope="row"| Communist Party of Ireland

| Eugene McCartan
General Secretary

| align="center" | {{Composition bar|0|166|hex=#DC241f}}2011 election

| align="center" | Participated

! scope="row"| Communist Refoundation Party

| Paolo Ferrero
General Secretary

| align="center" | {{Composition bar|0|630|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Jordanian Communist Party

| Munir Hamarneh
General Secretary

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Lao People's Revolutionary Party

| Choummaly Sayasone
General Secretary

| align="center" | {{Composition bar|128|132|hex=#DC241f}}2011 election

| align="center" | Participated

! scope="row"| Socialist Party of Latvia

| Alfrēds Rubiks
Chairman

| align="center" | {{Composition bar|3|100|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Lebanese Communist Party

| Khaled Hadadi
General Secretary

| align="center" | {{Composition bar|0|128|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Socialist People's Front

| Algirdas Paleckis
Chairman

| align="center" | {{Composition bar|0|141|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Communist Party of Luxembourg

| Ali Ruckert
General Secretary

| align="center" | {{Composition bar|0|60|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of Macedonia

|

| align="center" | Did not participate

| align="center" | Participated

! scope="row"| Communist Party of Malta

| Victor Degiovanni
General Secretary

| align="center" | {{Composition bar|0|69|hex=#DC241f}}2008 election

| align="center" | Sent message

! scope="row"| Communist Party of Mexico

| Pável Blanco Cabrera
General Secretary

| align="center" | {{Composition bar|0|500|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Communist Party of Nepal (Unified Marxist–Leninist)

| Jhala Nath Khanal
Chairman

| align="center" | {{Composition bar|109|601|hex=#DC241f}}2008 election

| align="center" | Sent message

! scope="row"| New Communist Party of the Netherlands

| Job Pruijser
Chairman

| align="center" | {{Composition bar|0|150|hex=#DC241f}}2010 election

| align="center" | Participated

! scope="row"| Communist Party of Norway

| Svend Haakon Jacobsen
Chairman

| align="center" | {{Composition bar|0|169|hex=#DC241f}}2009 election

| align="center" | Participated

! scope="row"| Communist Party of Pakistan

| Imdad Qazi
General Secretary

| align="center" | {{Composition bar|0|272|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| Palestinian People's Party

| Bassam as-Salhi
General Secretary

| align="center" | {{Composition bar|0|272|hex=#DC241f}}2006 election

| align="center" | Participated

! scope="row"| Communist Party of Paraguay

| Najeeb Amado
General Secretary

| align="center" | Did not participate

| align="center" | Participated

! scope="row"| Communist Party of Peru – Red Fatherland

| Alberto Moreno
General Secretary

| align="center" | Did not participate

| align="center" | Participated

! scope="row"| Communist Party of the Philippines – 1930

| Antonio E. Paris
General Secretary

| align="center" | Illegal

| align="center" | Sent message

! scope="row"| Communist Party of Poland

| Krzysztof Szwej
Chairman

| align="center" | {{Composition bar|0|460|hex=#DC241f}}2011 election

| align="center" | Participated

! scope="row"| Portuguese Communist Party

| Jerónimo de Sousa
General Secretary

| align="center" | {{Composition bar|14|230|hex=#DC241f}}2011 election

| align="center" | Participated

! scope="row"| Romanian Communist Party

|

| align="center" | Not recognized

| align="center" | Participated

! scope="row"| Communist Party of the Russian Federation

| Gennady Zyuganov
Chairman

| align="center" | {{Composition bar|92|450|hex=#DC241f}}2011 election

| align="center" | Participated

! scope="row"| New Communist Party of Yugoslavia

| Branko Kitanović
Executive Secretary

| align="center" | {{Composition bar|0|250|hex=#DC241f}}2008 election

| align="center" | Participated

! scope="row"| South African Communist Party