The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Uncategorized pages (9 members)
- Warning templates (2 members)
- WikiProject link templates (1 member)
- Wikipedia metatemplates (2 members)
- Wikipedia modules (1 member)
- Wikipedia never-substituted templates (3 members)
- Wikipedia non-free file copyright templates (1 member)
- Wikipedia non-free images (198 members)
- Wikipedia page-section templates (1 member)
- Wikipedia section templates (3 members)
- Wikipedia templates by order (1 member)
- Winglets (4 members)
- Wrapper templates (1 member)