The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Literature stub templates (1 member)
- Living people (1 member)
- Location map modules (1 member)
- Lua-based templates (14 members)
- Marriage templates (1 member)
- Microformat (uF) message templates (1 member)
- Modules subject to page protection (5 members)
- Modules that add a tracking category (2 members)
- Modules that check for strip markers (1 member)
- Museum templates (1 member)
- Namespace manipulation templates (1 member)
- Navboxes using background colours (4 members)
- Navigational boxes without horizontal lists (2 members)
- Navigational templates (1 member)
- New York (state) navigational boxes (1 member)
- OSM Location map templates (2 members)
- Official website not in Wikidata (1 member)
- Organization infobox templates (1 member)
- Pages containing links to subscription-only content (1 member)
- Pages used in system messages needing protection (2 members)
- Pages using gadget WikiMiniAtlas (3 members)
- Pages using xtag template with unsupported tag name (3 members)
- Pages with broken file links (2 members)
- Pages with broken maps (1 member)
- Pages with disabled graphs (1 member)
- Pages with maps (3 members)
- Pages with script errors (44 members)
- Pages with short description (7 members)
- Pages with syntax highlighting errors (35 members)
- People and person infobox templates (2 members)
- Planetaria in the United States (1 member)
- Police raids to LGBT venues (1 member)
- Private high schools in Cook County, Illinois (1 member)
- Programming typing-aid templates (1 member)
- Protection templates (1 member)
- Public high schools in Missouri (1 member)
- Quotation templates (1 member)
- Race riots in the United States (1 member)
- Redirect templates (1 member)
- Redirects from high-use templates (3 members)
- Redirects from merges (3 members)
- Redirects from moves (40 members)
- Redirects from shortcuts (1 member)
- Redirects from template shortcuts (27 members)
- Redirects to redirect templates (5 members)
- Related-topic templates (1 member)
- Reproduction-related templates (1 member)
- Riots and civil disorder in the United States (1 member)
- Rock Bridge High School alumni (1 member)
- Roman Catholic Archdiocese of Chicago (1 member)