The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Businesspeople (23 members)
- CATastrophic family (1 member)
- Cabinet (1 member)
- Capitalist political parties (7 members)
- Carpenters (1 member)
- Casino (1 member)
- Category:2020 joins (0 members)
- Celebrities (3 members)
- Central Committee (2 members)
- Central Committee chairs (3 members)
- Central Committee members (7 members)
- Central Flats Merchant Republic (2 members)
- Chiefs of staff (2 members)
- Christmas (1 member)
- Clerks (2 members)
- Commendation recipients (1 member)
- Commendations (3 members)
- Companies (1 member)
- Companies by year established (1 member)
- Companies established in 2023 (1 member)
- Compliance managers (1 member)
- Compliance officers (2 members)
- Congress (40 members)
- Congress by year (3 members)
- Congressional clerks (3 members)
- Congressional press assistants (2 members)
- Congressional staff (1 member)
- Congresspeople (1 member)
- Congresspeople by party (9 members)
- Constructors (3 members)
- Contagious diseases (3 members)
- Court cases (3 members)
- Court cases by court (3 members)
- Court cases by topic (2 members)
- Court cases by year (3 members)
- Court cases involving murder (0 members)
- Court cases involving theft (0 members)
- Court clerks (0 members)
- Courts (1 member)
- Crime (6 members)
- Culture (4 members)
- Current political parties (0 members)
- DCCategories named after departments (0 members)
- DCCategories named after people (8 members)
- DCWiki (2 members)
- DC Fans (1 member)
- DC Knights (3 members)
- Debate officers (1 member)
- Defunct departments (1 member)
- Defunct political parties (5 members)