The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Road types and names (0 members)
- Runway/Taxiway (1 member)
- Sample responses (14 members)
- Script Subpage (49 members)
- Search (2 members)
- Search templates (2 members)
- Segment (4 members)
- South Carolina (1 member)
- South Dakota (1 member)
- Southeast (1 member)
- Street (1 member)
- String manipulation templates (2 members)
- Style guides (58 members)
- Sv (0 members)
- Sv-0 (0 members)
- TW (0 members)
- Table examples (11 members)
- Table formatting templates (1 member)
- Template:Documentation (9 members)
- Template:Mbox (34 members)
- TemplateData documentation (34 members)
- Template documentation (1 member)
- Template documentation cleanup (6 members)
- Template documentation pages (238 members)
- Template lists (1 member)
- Template management (12 members)
- Templates (59 members)
- Templates for or part of the state template (118 members)
- Templates generating hAtom (1 member)
- Templates generating hCalendars (1 member)
- Templates generating hCards (1 member)
- Templates needing attention (6 members)
- Templates not transcluded as of 2016-08 (24 members)
- Templates using ParserFunctions (1 member)
- Templates using TemplateData (1 member)
- Temporal templates (1 member)
- Temporary (1 member)
- Tennessee (1 member)
- TestState (1 member)
- Texas (1 member)
- Text Formatting Templates (1 member)
- Text color templates (1 member)
- Text formatting templates (15 members)
- Time and date maintenance templates (2 members)
- Title review (1 member)
- Top Bar (3 members)
- Tracking templates (1 member)
- Traffic sign (5 members)
- Transcludable pages (17 members)
- Translation (3 members)