The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Belgium (0 members)
- Benelux (21 members)
- Benelux OldVersions (5 members)
- Benelux Templates (23 members)
- Bookmarklets (0 members)
- Bots (1 member)
- Botswana (2 members)
- Box templates (3 members)
- Brasil (2 members)
- Brazil-Brasil (1 member)
- Broken links (6 members)
- Broken redirects (0 members)
- Bugzilla (0 members)
- Bulgaria (2 members)
- CZ (2 members)
- California (0 members)
- Canada (0 members)
- Canada/Canada Specific Category (1 member)
- Cartouche (0 members)
- Cartouche links (0 members)
- Categories needing attention (0 members)
- Category management templates (3 members)
- Category namespace templates (1 member)
- Cesty (0 members)
- Check for country specific content (0 members)
- China-中国 (1 member)
- Cleanup templates (3 members)
- Client Applications (7 members)
- Closure (1 member)
- Colorado (0 members)
- CommonState (0 members)
- Communication templates (2 members)
- Community Administration (1 member)
- Computer keys (1 member)
- Connecticut (0 members)
- Construcción (3 members)
- Construction (57 members)
- Convert to Subpages (3 members)
- Countries (29 members)
- Country list (2 members)
- Cross-reference templates (1 member)
- Custom color scheme (1 member)
- Date-computing templates (6 members)
- Date mathematics templates (1 member)
- Delaware (0 members)
- Deletion request (5 members)
- Denmark (0 members)
- Deutsch (4 members)
- Disambiguation (0 members)
- Disambiguation and redirection templates (2 members)