| Country | Party |
| Azerbaijan | Communist Party of Azerbaijan |
| Albania | Communist Party of Albania |
| Algeria | Algerian Party for Democracy and Socialism |
| Armenia | Communist Party of Armenia |
| Australia | Communist Party of Australia |
| Bangladesh | Workers’ Party of Bangladesh |
| Communist Party of Bangladesh | |
| Bahrain | Democratic Progressive Tribune Bahrain |
| Belgium | Workers’ Party of Belgium |
| Brazil | Communist Party of Brazil |
| Brazilian Communist Party | |
| Britain | Communist Party of Britain |
| New Communist Party of Britain | |
| Bulgaria | Communist Party of Bulgaria |
| Party of the Bulgarian Communists | |
| Canada | Communist Party of Canada |
| Colombia | Colombian Communist Party |
| Croatia | Socialist Workers’ Party of Croatia |
| Cuba | Communist Party of Cuba |
| Cyprus | AKEL |
| Czech Republic | Communist Party of Bohemia Moravia |
| Denmark | Communist Party in Denmark |
| Communist Party of Denmark | |
| Egypt | Communist Party pf Egypt |
| Finland | Communist Party of Finland |
| FYROM | Communist Party of Macedonia |
| France | French Communist Party |
| Germany | German Communist Party |
| Georgia | United Communist Party of Georgia |
| Greece | Communist Party of Greece |
| Hungary | Hungarian Communist Workers’ Party |
| India | Communist Party of India |
| Communist Party of India (Marxist) | |
| Iran | Tudeh Party of Iran |
| Iraq | Iraqi Communist Party |
| Ireland | Communist Party of Ireland |
| Workers’ Party of Ireland | |
| Israel | Communist Party of Israel |
| Italy | Party of the Italian Communists |
| Jordan | Jordanian Communist Party |
| People’s Democratic Republic of Korea | Workers’ Party of Korea |
| Laos | People’s Revolutionary Party of Laos |
| Latvia | Socialist Party of Latvia |
| Lebanon | Lebanese Communist Party |
| Lithuania | Socialist People’s Front Lithuania |
| Luxemburg | Communist Party of Luxemburg |
| Malta | Communist Party of Malta |
| Mexico | Communist Party of Mexico |
| Popular Socialist Party of Mexico | |
| Nepal | Communist Party of Nepal (UML) |
| Netherlands | New Communist Party of Netherlands |
| Norway | Communist Party of Norway |
| Palestine | Palestinian People’s Party |
| Palestinian Communist Party | |
| Pakistan | Communist Party of Pakistan |
| Paraguay | Paraguayan Communist Party |
| Peru | Peruvian Communist Party |
| Communist Party of Peru (Patria Roja) | |
| Poland | Communist Party of Poland |
| Portugal | Portuguese Communist Party |
| Romania | Romanian Communist Party |
| Russia | Communist Party of the Russian Federation |
| Communist Workers' Party of Russia - Revolutionary Party of Communists | |
| Communist Party of the Soviet Union | |
| Union of Communist Parties — Communist Party of the Soviet Union | |
| Serbia | New Communist Party of Yugoslavia |
| Party of Communists of Serbia | |
| Sri Lanka | Communist Party of Sri Lanka |
| South Africa | South African Communist Party |
| Spain | Communist Party of Spain |
| Communist Party of the People’s of Spain | |
| Party of the Communists of Catalonia | |
| Sudan | Sudanese Communist Party |
| Sweden | Communist Party of Sweden |
| Syria | Syrian Communist Party |
| Syrian Communist Party (United) | |
| Turkey | Communist Party of Turkey |
| Labour Party (ΕΜΕΡ), Turkey | |
| USA | Communist Party USA |
| Ukraine | Communist Party of Ukraine |
| Union of Communists of Ukraine | |
| Venezuela | Communist Party of Venezuela |
| Vietnam | Communist Party Vietnam |
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