The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Pages using DynamicPageList (2 members)
- Pages using duplicate arguments in template calls (3 members)
- Pages with broken file links (1,133 members)
- Pages with ignored display titles (1 member)
- Pages with non-numeric formatnum arguments (1 member)
- Pages with script errors (26 members)
- Pressure (4 members)
- Protected areas (17 members)
- Recreational (17 members)
- Ship templates (1 member)
- Shipping (26 members)
- TemplateData documentation (2 members)
- Template documentation pages (4 members)
- Templates generating ADR microformats (1 member)
- Templates generating hRecipe (1 member)
- Templates generating microformats (1 member)
- Unfinished (2 members)
- Water transport infobox templates (1 member)
- Wikipedia infoboxes (1 member)
- Wikipedia metatemplates (2 members)