The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Templates generating microformats (1 member)
- Templates that add a tracking category (1 member)
- Templates using TemplateData (5 members)
- Terms (1 member)
- Themes (2 members)
- Themes/Portable Infobox (2 members)
- Transwiki guide (1 member)
- Videos (1 member)
- Wikipedia infoboxes (1 member)
- Wikipedia metatemplates (1 member)
- Workaround templates (2 members)