• Communist organizations by continent (8 C)
• Communist organizations by country (17 C)

C

• Comintern (3 C, 28 P)
• Comintern organizations (6 C, 28 P)

F

• Communist front organizations (8 C, 29 P)

H

• Hoxhaist organizations (2 C, 5 P)

L

• Left communist organizations (5 C, 23 P)
• Leninist organizations (9 C, 7 P)

M

• Maoist organizations (7 C, 22 P)
• Marxist organizations (6 C, 30 P)
• Communist militant groups (20 C, 70 P)

O

• Communist parties (23 C, 17 P)

P

• Popular fronts (11 C, 54 P)

S

• Situationist International (3 C, 28 P)
• Communist sports organizations (1 C, 5 P)

T

• Trotskyist organizations (5 C, 6 P)

U

• United fronts (9 C, 81 P)

Y

• Youth wings of communist parties (8 C, 146 P)

C

• Cominform
• Communist party

I

• International Communist Current
• International Communist Seminar
• International Meeting of Communist and Workers' Parties

P

• Politburo
• Profintern

U

• Unione Donne in Italia

W

• Women's Antifascist Front of Macedonia