The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Handbook templates (1 member)
- Hatnote templates (1 member)
- Hatnote templates documentation (1 member)
- Hatnote templates for user pages (1 member)
- Infobox templates (1 member)
- Inline cleanup templates (1 member)
- Internal link maintenance templates (1 member)
- Internet browsers (2 members)
- Interwiki link templates (1 member)
- Latest preview software release templates (1 member)
- Latest stable software release templates (1 member)
- List templates (1 member)
- Maintenance navigation (1 member)
- Microsoft-related templates (1 member)
- Microsoft Windows (7 members)
- Microsoft consoles (2 members)
- Minor planet formatting and function templates (1 member)
- Mobile phones (4 members)
- Navigational boxes (2 members)
- Nintendo consoles (3 members)