The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Application software templates (1 member)
- Article message templates (7 members)
- Article message templates with missing parameters (1 member)
- Articles which use infobox templates with no data rows (4 members)
- Cleanup templates (1 member)
- Controllers (1 member)
- Cross-reference templates (1 member)
- Devices (2 members)
- Documentation shared content templates (2 members)
- Exclude in print (3 members)
- Games (0 members)
- Gaming consoles (11 members)
- 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)