The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Communism navigational boxes (1 member)
- Communist Discord communities (8 members)
- Communist Party USA (4 members)
- Communist Party of Canada comrades (0 members)
- Communist Party of China (24 members)
- Communist Party of China templates (1 member)
- Communist Party of India comrades (0 members)
- Communist Party of Vietnam (2 members)
- Communist Party of the Soviet Union (1 member)
- Communist Tiktok artists (1 member)
- Communist YouTube channels (40 members)
- Communist YouTubers (0 members)
- Communist ideologies (7 members)
- Communist leaders (22 members)
- Communist magazines (3 members)
- Communist parties (266 members)
- Communist parties by country (2 members)
- Communist political candidates (10 members)
- Communist societies (1 member)
- Communist subreddits (1 member)
- Communist symbols (3 members)
- Communist underground movements (8 members)
- Communist youth organizations (3 members)
- Communists (54 members)
- Communists by country (7 members)
- Communists by party (5 members)
- Community organization (1 member)
- Companies (6 members)
- Companies based in the United States (10 members)
- Companies targeted by BDS (4 members)
- Computer operating systems (2 members)
- Computing (7 members)
- Comrades (0 members)
- Comrades by organization (12 members)
- Comrades by region (5 members)
- Comrades from Africa (0 members)
- Comrades from Asia (0 members)
- Comrades from Australia (0 members)
- Comrades from Europe (3 members)
- Comrades from North America (3 members)
- Comrades from Oceania (1 member)
- Comrades from South America (0 members)
- Comrades from the Americas (2 members)
- Comrades of the RTC (2 members)
- Conflicts (7 members)
- Congresses of the Brazilian Communist Party (1 member)
- Conspiracy theories (5 members)
- Constitutions (8 members)
- Constitutions of the Communist Party of China (10 members)
- Constitutions of the People's Republic of China (1 member)
- Constitutions of the Soviet Union (2 members)
- Continents (8 members)
- Contribute to ProleWiki (6 members)
- Corporate media (1 member)
- Cosmonauts (1 member)
- Countergangs strategy (1 member)
- Counterpropaganda (1 member)
- Counterrevolution (2 members)
- Counterrevolutionaries (10 members)
- Countries (226 members)
- Countries by continent (4 members)
- Countries by ideology (3 members)
- Countries invaded by the United States (23 members)
- Countries sanctioned by the US (8 members)
- Countries targeted by CIA coups (19 members)
- Countries targeted by imperialist aggression (19 members)
- Country data templates of Greece (1 member)
- Country data templates of India (1 member)
- Country data templates of Iran (3 members)
- Country data templates of South Africa (1 member)
- Country data templates of South Korea (2 members)
- Country data templates of cities in the United States (3 members)
- Country data templates of countries (3 members)
- Country data templates of former countries (4 members)
- Country data templates of governments (1 member)
- Country data templates of historical entities (2 members)
- Country data templates of partly recognized states (0 members)
- Country data templates of subdivisions of Palau (7 members)
- Country data templates of subdivisions of Paraguay (6 members)
- Country data templates of subdivisions of the Kingdom of Denmark (1 member)
- Country data templates of the United Kingdom (1 member)
- Coup attempts (3 members)
- Coups (5 members)
- Criminals (3 members)
- Crisis theory (1 member)
- Crit's absolute beginner reading list (0 members)
- Criticism and refusal of work (1 member)
- Critiques (essays) (4 members)
- Cuba (6 members)
- Cuba memes (1 member)
- Current AES (essays) (4 members)
- Current events (5 members)
- Current heads of government (6 members)
- Current heads of state (17 members)
- DPRK (2 members)
- DPRK propaganda posters (8 members)
- DPRK reading lists (2 members)
- Data (1 member)
- Debunking myths (27 members)
- Defunct political organizations (4 members)