The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Formatting and function templates (1 member)
- Formatting templates (13 members)
- ForumLink using Community (37 members)
- Forum badges (9 members)
- Forum templates (2 members)
- Freeway (1 member)
- GR (0 members)
- Gas Station (5 members)
- Georgia (0 members)
- Global (2 members)
- Global image archive (6 members)
- Graphic templates (2 members)
- Graphics templates (1 member)
- Great Lakes (1 member)
- Guam (1 member)
- Guideline properties (16 members)
- Hatnote templates (5 members)
- Hatnote templates documentation (1 member)
- Hawaii (1 member)
- Hidden categories (3 members)