The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Abandoned templates under construction (1 member)
- Abandoned user pages under construction (1 member)
- All articles with dead external links (1 member)
- Archival templates (2 members)
- Article management templates (38 members)
- Article message templates with missing parameters (1 member)
- Article stubs (6 members)
- Articles in need of cleanup (0 members)
- Articles needing citations (0 members)
- Babel (1 member)
- Blog posts (14 members)
- Bot templates (1 member)
- Box templates (2 members)
- Bracket templates (14 members)
- Browse (6 members)
- Bullet templates (8 members)
- CC-BY-2.0 files (0 members)
- CC-BY-ND files (0 members)
- CC-BY-SA-3.0 files (1 member)
- CC-BY-SA-4.0 files (5 members)
- CC-BY-SA files (1 member)
- CC-BY files (1 member)
- Candidates for deletion (14 members)
- Candidates for deletion/before 2020 (0 members)
- Candidates for speedy deletion (0 members)
- Category templates (6 members)
- Character-substitution templates (14 members)
- Character infobox templates (6 members)
- Citation templates (12 members)
- Citations needed (0 members)
- Clear templates (5 members)
- Color templates (7 members)
- Community (5 members)
- Content (10 members)
- Context link templates (3 members)
- Controller button templates (4 members)
- Copyright (1 member)
- Copyright templates (1 member)
- Copyrighted files (0 members)
- Data templates (9 members)
- Date and time templates (12 members)
- Decorative Templates (1 member)
- Design templates (28 members)
- Dev modules (22 members)
- Disambiguations (1 member)
- Div-based box templates (3 members)
- Documentation templates (27 members)
- Edit link templates (3 members)
- Emoticons (2 members)
- Example articles (0 members)