The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Additional magic word templates (1 member)
- Article message templates with missing parameters (3 members)
- Character-substitution templates (1 member)
- Documentation (1 member)
- Documentation see also templates (1 member)
- Documentation shared content templates (1 member)
- En (5 members)
- En-1 (1 member)
- En-2 (2 members)
- En-N (2 members)
- Eo (1 member)
- Eo-1 (1 member)
- Es (3 members)
- Es-1 (3 members)
- Fr (1 member)
- Fr-2 (1 member)
- Header templates (3 members)
- Image with comment templates (1 member)
- Indexed pages (1 member)
- Inline talk templates (3 members)
- Ja (2 members)
- Ja-N (2 members)
- Ko-0 (1 member)
- Link templates (1 member)
- List formatting and function templates (1 member)
- Local user groups (1 member)
- Lua-based templates (4 members)
- Noindexed pages (3 members)
- Pages used in system messages needing protection (1 member)
- Pages with broken file links (5 members)
- Pages with script errors (13 members)
- Policies (2 members)
- Portal namespace templates (1 member)
- Quotation templates (1 member)
- Ru (1 member)
- Ru-1 (1 member)
- Steward requests (5 members)
- Support (1 member)
- Template documentation pages (10 members)
- Template redirects (1 member)
- Templates using TemplateData (1 member)
- User namespace templates (1 member)
- User templates (3 members)
- User warning templates (7 members)
- Userboxes (3 members)
- Username internal link templates (2 members)
- Userpage header templates (1 member)
- Voting templates (1 member)
- WikiOasis (2 members)
- Wiki Oasis policies (2 members)