The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Redirects with possibilities (2 members)
- Reference list templates (1 member)
- Related-topic templates (1 member)
- Resizing templates (2 members)
- Resolution templates (3 members)
- Resources (68 members)
- Root (0 members)
- Root Vegetables (crop category) (2 members)
- Sandbox templates (2 members)
- Semantic markup templates (17 members)
- Shortcut templates (2 members)
- Sidebar meta-templates (3 members)
- Sidebars with styles needing conversion (2 members)
- Software infobox templates (1 member)
- Software templates (1 member)
- Strategies (1 member)
- String manipulation templates (3 members)
- Table templates (1 member)
- Talk header templates (2 members)
- Talk message boxes (2 members)
- Talk namespace templates (1 member)
- Template (6 members)
- TemplateData (1 member)
- Template documentation (8 members)
- Template documentation cleanup templates (1 member)
- Template documentation pages (1 member)
- Template namespace templates (19 members)
- Template redirects with possibilities (2 members)
- Template sandboxes (1 member)
- Template shell templates (1 member)
- Template test cases (5 members)
- Templates (1 member)
- Templates based on the String Lua module (5 members)
- Templates for discussion templates (1 member)
- Templates for printworthy redirects (1 member)
- Templates for redirects from a modification of the target name (1 member)
- Templates for redirects from a shorter name (1 member)
- Templates for redirects from alternative names (1 member)
- Templates for redirects resulting from merges or moves (2 members)
- Templates for redirects to templates (1 member)
- Templates for redirects with possibilities (1 member)
- Templates for unprintworthy redirects (2 members)
- Templates in beta (1 member)
- Templates needing substitution checking (10 members)
- Templates not safe for use in citation templates (7 members)
- Templates that add a tracking category (10 members)
- Templates that are not mobile friendly (1 member)
- Templates that generate named references (1 member)
- Templates used by Twinkle (8 members)
- Templates using TemplateStyles (21 members)