The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Companies (1 member)
- Computers (3 members)
- Cosmic Whiz Kid (13 members)
- Costumes (1 member)
- Crew (7 members)
- Crew (TOS) (2 members)
- Criminals (1 member)
- Cruise Ship to the Stars (17 members)
- Date/Time Related Templates (2 members)
- Deceased Characters (6 members)
- Descriptive terms (24 members)
- Disambiguation (15 members)
- Draconian (1 member)
- Draconian Empire (16 members)
- Earth (46 members)
- Earth Defense Directorate (26 members)
- Earth Directorate (1 member)
- Episodes (72 members)
- Escape from Wedded Bliss (27 members)
- Events (1 member)