The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 10th Anniversary merchandise (6 members)
- 15th Anniversary merchandise (2 members)
- 20th Anniversary merchandise (7 members)
- Abbreviation templates (2 members)
- Administration (6 members)
- Age error (0 members)
- Album art (41 members)
- Album articles lacking alt text for covers (0 members)
- Album articles with non-standard infoboxes (0 members)
- Album infoboxes lacking a cover (0 members)
- Album track list templates (0 members)
- Alchemy Vol. 1 Merchandise (0 members)
- Alchemy Vol. 1 merchandise (4 members)
- Alexander Theatre Sessions Merchandise (0 members)
- Alexander Theatre Sessions merchandise (1 member)
- All articles with unsourced statements (20 members)
- All stub articles (142 members)
- Appearances (2 members)
- Article management templates (1 member)
- Article message templates (1 member)
- Article message templates with missing parameters (1 member)
- Articles containing non-English-language text (0 members)
- Articles using Infobox character with multiple unlabeled fields (0 members)
- Articles using infobox templates with no data rows (0 members)
- Articles with dead external links from April 2025 (0 members)
- Articles with hAudio microformats (184 members)
- Articles with hCards (25 members)
- Articles with hatnote templates targeting a nonexistent page (1 member)
- Articles with long short description (7 members)
- Articles with missing Wikidata information (0 members)
- Articles with music ratings that need to be turned into prose (0 members)
- Articles with short description (216 members)
- Articles with underscores in the title (0 members)
- Articles with unsourced statements (20 members)
- Articles without Wikidata item (0 members)
- Associated Artists (0 members)
- Associated People (0 members)
- Associated artists (13 members)
- Associated people (10 members)
- Audio templates (1 member)
- Babel - Users by language (7 members)
- Backstage Rock Shop merchandise (153 members)
- Badges and patches (17 members)
- Bags (17 members)
- Band (9 members)
- Band images (30 members)
- Band member images (66 members)
- Band members (12 members)
- Biographical templates usable as a module (1 member)
- Biography template using pronunciation (0 members)