The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Modules that add a tracking category (3 members)
- Modules that check for strip markers (1 member)
- Modules tracking Wikidata (1 member)
- Modules using data from Wikidata (1 member)
- Monsters (18 members)
- Mozilla-related templates (1 member)
- Multi-column templates (6 members)
- Music Videos (1 member)
- Music infobox templates (14 members)
- Music templates (1 member)
- Music videos (7 members)
- Musician templates (2 members)
- Namespace manipulation templates (1 member)
- Navboxes using background colours (5 members)
- Navigational box wrapper templates (2 members)
- Navigational boxes (1 member)
- Navigational boxes without horizontal lists (4 members)
- Needs fixing (1 member)
- New Zealand copyright tags (2 members)
- Nocturnal (8 members)
- Noindexed pages (1 member)
- Non-free posters (23 members)
- Non-free use rationale templates (0 members)
- Official website not in Wikidata (1 member)
- Organization infobox templates (1 member)
- Pages used in system messages needing protection (3 members)
- Pages using DynamicPageList3 parser tag (16 members)
- Pages using Tabber parser tag (17 members)
- Pages using div col with small parameter (3 members)
- Pages using duplicate arguments in template calls (2 members)
- Pages using infobox templates with ignored data cells (2 members)
- Pages using track listing with unknown parameters (5 members)
- Pages with YouTube Embeds (0 members)
- Pages with broken file links (602 members)
- Pages with reference errors (2 members)
- Pages with script errors (635 members)
- Pages with short description (122 members)
- Paralympics task force (1 member)
- People (25 members)
- People and person infobox templates (5 members)
- Polaroids (554 members)
- Positioning templates (1 member)
- Protection templates (1 member)
- Public domain copyright templates (1 member)
- Public domain images (3 members)
- Public domain images ineligible for copyright (shape) (1 member)
- Red, White and Bruised: The Midnight Live (1 member)
- Related-topic templates (1 member)
- Releases (13 members)
- Remixes (21 members)
- Restriction tags (1 member)
- Scribunto modules with errors (15 members)
- Self-published work (276 members)
- Semantic markup templates (2 members)
- Sidebars with styles needing conversion (1 member)
- Singles (23 members)
- Site (1 member)
- Software media templates (2 members)
- Software templates (2 members)
- Somecat (2 members)
- Somecat1 (2 members)
- Somecat2 (2 members)
- Somecat3 (2 members)
- Song articles with both composer and songwriter (86 members)
- Song articles with both lyricist and songwriter (86 members)
- Songs (87 members)
- Spring 2019 Tour Photos (30 members)
- Structured Data on Commons templates (1 member)
- TV Videos (57 members)
- Table templates (1 member)
- Talk message boxes (1 member)
- Television templates (2 members)
- TemplateData documentation (1 member)
- TemplateStyles stylesheets with errors (1 member)
- Template documentation pages (91 members)
- Template namespace templates (2 members)
- Templates based on the Citation/CS1 Lua module (1 member)
- Templates based on the Infobox Lua module (1 member)
- Templates generating COinS (3 members)
- Templates generating hAudio microformats (5 members)
- Templates generating hCalendars (4 members)
- Templates generating hCards (6 members)
- Templates generating microformats (1 member)
- Templates not safe for use in citation templates (1 member)
- Templates that add a tracking category (22 members)
- Templates that generate named references (1 member)
- Templates that generate short descriptions (5 members)
- Templates tracking Wikidata (1 member)
- Templates used by AutoWikiBrowser (1 member)
- Templates used by Twinkle (1 member)
- Templates using TemplateData (43 members)
- Templates using TemplateStyles (10 members)
- Templates using an unknown approach for internationalisation (1 member)
- Templates using data from Wikidata (3 members)
- Templates using the Wikipedia license migration system (3 members)
- Test cases using output parameter (2 members)
- Text-specific formatting and function templates (2 members)
- The Midnight Accessories (33 members)
- The Midnight Apparel (76 members)
- The Midnight Merchandise (149 members)