The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Wikipedia CatAutoTOC (2 members)
- Wikipedia extended-protected redirects (3 members)
- Wikipedia fully protected redirects (3 members)
- Wikipedia interwiki soft redirects (3 members)
- Wikipedia non-empty soft redirected categories (3 members)
- Wikipedia pages with incorrect protection templates (28 members)
- Wikipedia protected soft redirects (3 members)
- Wikipedia redirects (1 member)
- Wikipedia semi-protected redirects (3 members)
- Wikipedia soft redirected categories (3 members)
- Wikipedia soft redirected project pages (3 members)
- Wikipedia soft redirected talk pages (3 members)
- Wikipedia soft redirected templates (3 members)
- Wikipedia soft redirects (3 members)
- Wikipedia soft redirects to nonexistent targets (3 members)
- Wikipedia template-protected redirects (3 members)
- Wikipedia template categories (1 member)
- Wikipedia template parameter issues (1 member)
- Wikipedia transclusionless templates (3 members)
- Wikitext typing-aid templates (11 members)