The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Pages with broken file links (602 members)
- Pages with reference errors (1 member)
- Pages with script errors (635 members)
- Pages with short description (122 members)
- Paralympics task force (1 member)
- People (25 members)
- People and person infobox templates (5 members)
- Polaroids (554 members)
- Positioning templates (1 member)
- Protection templates (1 member)
- Public domain copyright templates (1 member)
- Public domain images (3 members)
- Public domain images ineligible for copyright (shape) (1 member)
- Red, White and Bruised: The Midnight Live (1 member)
- Related-topic templates (1 member)
- Releases (13 members)
- Remixes (20 members)
- Restriction tags (1 member)
- Scribunto modules with errors (15 members)
- Self-published work (276 members)