The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 10 Cloverfield Lane (3 members)
- 1985 births (2 members)
- All articles with unsourced statements (2 members)
- Alternate Reality Game (25 members)
- Article management templates (3 members)
- Article stubs (13 members)
- Articles Needing Cleanup (12 members)
- Articles focused on Tagruato (7 members)
- Articles with Wikipedia content (12 members)
- Articles with broken citations (1 member)
- Articles with invalid date parameter in template (1 member)
- Articles with unsourced statements (1 member)
- Articles with unsourced statements since April 2008 (1 member)
- Articles with unsourced statements since February 2008 (0 members)
- Articles with unsourced statements since June 2008 (1 member)
- BlogListingPage (0 members)
- Blog posts (6 members)
- Browse (19 members)
- Candidates for deletion (5 members)
- Cast (14 members)
- Category templates (3 members)
- Characters (57 members)
- Characters (10 Cloverfield Lane) (9 members)
- Characters (Cloverfield) (39 members)
- Characters (The Cloverfield Paradox) (6 members)
- Chronology (0 members)
- Citations needed (0 members)
- Cloverfield (7 members)
- Cloverfield Media (3 members)
- Cloververse (11 members)
- Community (3 members)
- Content (14 members)
- Copyright (1 member)
- Creatures (4 members)
- Crew (12 members)
- Deceased Characters (12 members)
- Disambiguations (1 member)
- Events in Cloverfield (1 member)
- Fan Theory and Content (8 members)
- Fan Websites (3 members)
- Forums (6 members)
- General wiki templates (20 members)
- God Particle (0 members)
- Help (14 members)
- Help desk (2 members)
- Hidden categories (2 members)
- Image wiki templates (11 members)
- Images (114 members)
- Kenshin Characters (1 member)
- List (1 member)
