The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Articles (33 members)
- Articles in need of cleanup (6 members)
- Blog posts (6 members)
- Browse (31 members)
- Candidates for deletion (2 members)
- Celeste Wiki (24 members)
- Chapter Completion Screens (9 members)
- Chapter Redirects (9 members)
- Chapters (11 members)
- Character Redirects (4 members)
- Characters (6 members)
- Disambiguations (0 members)
- Gifs (0 members)
- Guides (5 members)
- Help (2 members)
- Image Redirects (11 members)
- Images (38 members)
- Locations (1 member)
- Minigame (1 member)
- Modes (3 members)
- Movies (5 members)
- Objects (98 members)
- Original (1 member)
- Pages with broken file links (4 members)
- Pictures (0 members)
- Redirects (31 members)
- Secret (1 member)
- Stubs (1 member)
- Template documentation (8 members)
- Templates (30 members)
- Templates/Infobox (2 members)
- Unlockable (1 member)
- Videos (5 members)