The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Flight of the War Witch, Part II (4 members)
- Foes (8 members)
- Former Star Trek Cast and Crew (5 members)
- Galactipedian (1 member)
- Galactipedian (US) (1 member)
- Gallery (1 member)
- General wiki templates (1 member)
- Glen Larson Productions Cast and Crew (15 members)
- Happy Birthday, Buck (11 members)
- Image tags (3 members)
- Image tags helper templates (9 members)
- Infobox (14 members)
- Infobox Templates (1 member)
- Infobox templates (1 member)
- Infoline (4 members)
- Internal link templates (5 members)
- Items (1 member)
- Journey to Oasis (6 members)
- Lists (8 members)
- Location (1 member)