 | Austria | Party of Labour of Austria | (PdA, Partei der Arbeit) |
 | Bielorussia | Communist Party of the Workers of Belarus | (BKPT) |
 | Bulgary | Party of Bulgarian Communists | (PBK, Партия на Българските комунисти, Partiya na Bulgarskite Komunisti) |
| Bulgary | Union of Communists in Bulgaria | (SKB, Sayuz na Komunistite v Balgariya) |
 | Croatia | Socialist Workers' Party of Croatia | (SRP, Socijalistička radnička partija Hrvatske) |
 | Denmark | Communist Party in Denmark | KPiD, Kommunistisk Parti i Danmark) |
 | Finland | Communist Workers' Party – For Peace and Socialism (Finland) | Kommunistinen Työväenpuolue – Rauhan ja Sosialismin |
 | France | Communist Revolutionary Party of France | (PCRF, Parti Communiste Révolutionnaire de France) |
| France | Pole of Communist Revival in France | (PRCF, Pôle de renaissance communiste en France) |
 | Georgia | United Communist Party of Georgia | (SEKP, საქართველოს ერთიანი კომუნისტური პარტია) |
 | Great Britain | New Communist Party of Britain | (NCP) |
 | Greece | Communist Party of Greece | (KKE, Κομμουνιστικό Κόμμα Ελλάδας) |
 | Hungary | Hungarian Workers' Party | (Magyar Munkáspárt) |
 | Ireland | Workers' Party of Ireland | (Páirtí na nOibrithe) |
 | Italy | Communist Party | (PC, Partito Comunista) |
 | Latvia | Socialist Party of Latvia | (LSP, Latvijas Sociālistīskā partija) |
 | Lthuania | Socialist People's Front | (SPF, Socialistinis liaudies frontas) |
 | Macedonia | Communist Party of Macedonia | (KPM, Komunisticka Partija na Makedonija) |
 | Malta | Communist Party of Malta | (PK, Partit Komunista Malti) |
 | Moldavia | People’s Resistance | (Rezistența) |
 | Norway | Communist Party of Norway | (NKP, Norges Kommunistiske Parti) |
 | Poland | Polish Communist Party | (KPP, Komunistyczna Partia Polski) |
 | Russia | Communist Party of the Soviet Union | (KPSS, Коммунистическая Партия Советского Союза) |
| Russia | Russian Communist Workers' Party | (RKRP, Российская коммунистическая рабочая партия) |
 | Serbia | New Communist Party of Yugoslavia | (NKPJ, Нова комунистичка партија Југославије) |
 | Slovakia | Communist Party of Slovakia | (KSS, Komunistická strana Slovenska) |
 | Spain | Communist Party of the Workers of Spain | (PCTE, Partido Comunista) |
 | Sweden | Communist Party of Sweden | (SKP, Sveriges Kommunistiska Parti) |
 | Turkey | Communist Party | (KP, Türkiye Komünist Partisi) |
 | Ukraine | Union of Communists of Ukraine | (SKU, Союз комуністів України) |
