The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- All article disambiguation pages (8 members)
- All disambiguation pages (12 members)
- Animal Crossing (1 member)
- Ar-0 (0 members)
- Archived (2 members)
- Article message templates (1 member)
- Article message templates with missing parameters (4 members)
- Articles using small message boxes (1 member)
- Articles with short description (3 members)
- Babel - Users by language (28 members)
- Da-0 (0 members)
- De (1 member)
- De-1 (1 member)
- En (4 members)
- En-2 (0 members)
- En-3 (1 member)
- En-N (3 members)
- Es (1 member)
- Es-1 (1 member)
- Es-2 (0 members)
- Es-3 (0 members)
- Es-4 (0 members)
- File message boxes (3 members)
- Fr (0 members)
- Fr-4 (0 members)
- General guides (14 members)
- He (0 members)
- He-2 (0 members)
- He-N (0 members)
- Help pages (3 members)
- Hidden categories (21 members)
- Hu (1 member)