1. Communist Party of Argentina
2. Communist Party of Armenia
3. Communist Party of Bangladesh
4. Communist Party of Belarus
5. Workers' Party of Belgium
6. Communist Party of Brazil
7. Communist Party of Britain
8. New Communist Party of Britain
9. Communist Party of Bulgaria
10. Party of the Bulgarian Communists
11. Communist Party of Canada
12. Communist Party in Denmark
13. Communist Party of Denmark
14. Communist Party of Finland
15. German Communist Party
16. Communist Party of Greece
17. Hungarian Communist Workers' Party
18. Communist Party of India [Marxist]
19. Tudeh Party of Iran
20. Communist Party of Ireland
21. The Workers' Party of Ireland
22. Party of the Italian Communists
23. Party of the Communist Refoundation
24. Jordanian Communist Party
25. Socialist Party of Latvia
26. Lebanese Communist Party
27. Socialist Party of Lithuania
28. Communist Party of Luxembourg
29. Communist Party of Macedonia
30. AKFM, Madagascar
31. Communist Party of Malta
32. Party of the Communists, Mexico
33. Popular Socialist Party of Mexico
34. New Communist Party of the Netherlands
35. Communist Party of Norway
36. Peruan Communist Party
37. Philippine Communist Party -PKP 1930
38. Communist Party of Poland
39. Portuguese Communist Party
40. Romanian Communist Party
41. Communist Party of Soviet Union
42. Communist Party of the Russian Federation
43. Russian Communist Workers' Party – Revolutionary Party of Communists
44. New Communist Party of Yugoslavia
45. Party of the Communists of Serbia
46. Communist Party of Slovakia
47. South African Communist Party
48. Communist Party of the Peoples of Spain
49. Communist Party of Spain
50. Communist Party of Sri-Lanka
51. Communist Party of Sweden
52. Syrian Communist Party
53. Communist Party of Turkey
54. Communist Party of Ukraine
55. Union of Communists of Ukraine
56. Communist Party of Venezuela