The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Article management templates (4 members)
- Article stubs (0 members)
- BlogListingPage (0 members)
- Blog posts (5 members)
- Boy bands (1 member)
- Bromances (3 members)
- Browse (4 members)
- Candidates for deletion (1 member)
- Candidates for speedy deletion (0 members)
- Category templates (3 members)
- Community (6 members)
- Content (1 member)
- Copyright (0 members)
- Cover songs (1 member)
- Disambiguations (0 members)
- English musical groups (1 member)
- Files (2 members)
- Forums (6 members)
- General wiki templates (33 members)
- Help (5 members)
- Help desk (3 members)
- Hidden categories (3 members)
- Image wiki templates (9 members)
- Images (3 members)
- Infobox templates (8 members)
- Members (4 members)
- New pages (0 members)
- Organisation (0 members)
- Organization (9 members)
- Pages proposed for deletion (0 members)
- Pages with broken file link (0 members)
- Pages with broken file links (2 members)
- Policy (2 members)
- Singles (3 members)
- Site administration (4 members)
- Site maintenance (5 members)
- Songs (10 members)
- Songs with music videos (3 members)
- Template documentation (61 members)
- Templates (13 members)
- Union J (4 members)
- Union J singles (3 members)
- Union J songs (10 members)
- Utility templates (1 member)
- Videos (23 members)
- Watercooler (2 members)
- Xtra Factor (1 member)