The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Sex and sexuality navigational boxes (1 member)
- Sex museums in the United States (1 member)
- Short description with empty Wikidata description (7 members)
- Sidebars with styles needing conversion (2 members)
- Society of Jesus in Illinois (1 member)
- String manipulation templates (1 member)
- Template documentation pages (25 members)
- Template namespace templates (2 members)
- Templates based on the Citation/CS1 Lua module (1 member)
- Templates based on the String Lua module (2 members)
- Templates generating COinS (3 members)
- Templates generating hCards (2 members)
- Templates generating hCards and Geo (1 member)
- Templates generating microformat date and age (1 member)
- Templates generating microformat dates (1 member)
- Templates needing substitution checking (2 members)
- Templates that add a tracking category (7 members)
- Templates that generate short descriptions (1 member)
- Templates tracking Wikidata (3 members)
- Templates used by Twinkle (1 member)
- Templates using TemplateData (17 members)
- Templates using TemplateStyles (4 members)
- Templates using data from Wikidata (2 members)
- Templates with coordinates fields (1 member)
- Test cases using output parameter (4 members)
- Text-specific formatting and function templates (1 member)
- Top icon protection templates (1 member)
- Uncategorized pages (1 member)
- United States LGBT navigational boxes (3 members)
- United States history templates (1 member)
- United States stub templates (1 member)
- Use American English from October 2019 (1 member)
- Use mdy dates from March 2022 (1 member)
- User interface language dependent templates (1 member)
- Veterans of the Stonewall riots (1 member)
- Washington Metro templates (1 member)
- Webarchive template wayback links (5 members)
- WikiProject Museums templates (1 member)
- WikiProject Redirect templates (1 member)
- WikiProject Short descriptions (1 member)
- Wikidata templates (1 member)
- Wikimedia Commons templates (1 member)
- Wikipedia Portal navflags (1 member)
- Wikipedia XHTML tag-replacing templates (1 member)
- Wikipedia administration templates (1 member)
- Wikipedia editnotices (1 member)
- Wikipedia fully protected templates (1 member)
- Wikipedia magic word templates (1 member)
- Wikipedia substituted templates (4 members)
- Women erotica writers (1 member)