The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Article message templates with missing parameters (7 members)
- Autotranslated templates (2 members)
- Candidates for deletion (11 members)
- Caveballs (1 member)
- Chromeball icons (173 members)
- Comics (1 member)
- Commons-en (1 member)
- Country icons (257 members)
- Featured pictures on Ballmedia Commons (1 member)
- Featured pictures on Wikimedia Commons (1 member)
- Files imported from old wiki (48,305 members)
- Files tagged as own work (39 members)
- Files uploaded by the author (47 members)
- Formatting templates (1 member)
- Gif (1 member)
- Heavily used templates (2 members)
- Icons (1 member)
- Images (7 members)
- Internationalization templates (2 members)
- Jylland (1 member)
- Kosovoball (1 member)
- Lua-based templates (1 member)
- Motd templates (1 member)
- PCB Template (23 members)
- Pages with broken file links (16 members)
- Pages with script errors (44 members)
- Polandball (2 members)
- Potd templates (1 member)
- Sisterproject templates (1 member)
- Template documentation (4 members)
- Template documentation pages (7 members)
- Typing-aid templates (2 members)
- User:Österreichball (1 member)
- Userbox icons (4 members)
- Wikicopy (9 members)
- Workaround templates (1 member)