The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Afghanistan (3 members)
- Albania (2 members)
- Algeria (2 members)
- All articles (0 members)
- Argentina (3 members)
- Armenia (2 members)
- Asia (1 member)
- Australia (33 members)
- Austria (5 members)
- Austrlia (0 members)
- Azerbaijan (1 member)
- Bahamas (1 member)
- Barbados (1 member)
- Belarus (13 members)
- Belgium (4 members)
- Bolivia (1 member)
- Bosnia and Herzegovina (3 members)
- Brazil (5 members)
- Bulgaria (2 members)
- CS1 errors: bare URL (3 members)
- CS1 errors: dates (3 members)
- CS1 errors: generic name (1 member)
- CS1 errors: missing title (3 members)
- CS1 español-language sources (es) (1 member)
- CS1 français-language sources (fr) (1 member)
- CS1 latviešu-language sources (lv) (1 member)
- CS1 maint: numeric names: authors list (3 members)
- CS1 maint: unrecognized language (4 members)
- CS1 polski-language sources (pl) (1 member)
- CS1 Ελληνικά-language sources (el) (1 member)
- CS1 русский-language sources (ru) (2 members)
- Calendars (8 members)
- Cambodia (1 member)
- Canada (43 members)
- Caribbean (1 member)
- Catalonia (2 members)
- Categories with maps (0 members)
- Cemeteries (5 members)
- Cemeteries in France (1 member)
- Chicago (1 member)
- Chile (1 member)
- China (9 members)
- Colombia (3 members)
- Complex utilities (1 member)
- Congo (3 members)
- Contributor page (81 members)
- Croatia (3 members)
- Cuba (1 member)
- Cyprus (7 members)
- Czech Republic (1 member)