The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Portal (3 members)
- Portal templates (2 members)
- Positioning templates (1 member)
- Potentially outdated (1 member)
- Programming typing-aid templates (1 member)
- Protected templates (3 members)
- Puerto Rico (0 members)
- Ramp (1 member)
- Red Links (1 member)
- Regional Coordinator template (3 members)
- Request for deletion (0 members)
- Request for global cleanup (0 members)
- Request for global merge (0 members)
- Review For Subpages (0 members)
- Review Purpose (1 member)
- Review redirects (18 members)
- Review section headings (1 member)
- Revision (30 members)
- Rhode Island (2 members)
- Road Type (11 members)