The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Anarcho-capitalism (2 members)
- Anarcho-capitalists (3 members)
- Ancient history (14 members)
- Ancient philosophers (1 member)
- Angola (2 members)
- Anthems (2 members)
- Anti-capitalism (3 members)
- Anti-communism (13 members)
- Anti-communist propaganda (9 members)
- Anti-communists (6 members)
- Anti-communists by country (1 member)
- Anti-fascism (3 members)
- Anti-fascists (5 members)
- Anti-imperialism (21 members)
- Anti-imperialist journalists (7 members)
- Anti-imperialist memes (3 members)
- Anti-imperialist news outlets (24 members)
- Anti-imperialist organizations (18 members)
- Anti-imperialist rulers (3 members)
- Anti-imperialist states (11 members)