The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Angels & Demons Characters (4 members)
- Angels & Demons cast (6 members)
- Antagonist (11 members)
- BlogListingPage (0 members)
- Blog Posts (1 member)
- Blog posts (3 members)
- Books (9 members)
- Cast (10 members)
- Characters (38 members)
- Characters in the Robert Langdon Series (27 members)
- City (3 members)
- Co-protagonist (4 members)
- Content (16 members)
- Da Vinci Code cast (1 member)
- Deception Point (7 members)
- Deuteragonist (4 members)
- Fanfiction (1 member)
- Forums (4 members)
- General wiki templates (1 member)
- Help (2 members)
- Help Desk (2 members)
- Hidden categories (2 members)
- Image wiki templates (1 member)
- Inferno Characters (8 members)
- Inferno cast (3 members)
- Langdon's deuteragonist (4 members)
- Locations (4 members)
- Movies (4 members)
- Occupations (1 member)
- Others (3 members)
- Pages with broken file links (2 members)
- Portals (6 members)
- Protagonist (3 members)
- Quote and dialogue templates (2 members)
- Robert Langdon series (5 members)
- Templates (8 members)
- The Da Vinci Code Characters (10 members)
- The Lost Symbol Characters (6 members)
- Timeline (1 member)
- Videos (47 members)
- Watercooler (2 members)