The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Iowa (1 member)
- JP (6 members)
- Junction (13 members)
- Kansas (1 member)
- Kentucky (1 member)
- Lang templates (0 members)
- Language Templates (0 members)
- Language templates (1 member)
- Line-handling templates (0 members)
- Linking templates (5 members)
- Live Map (1 member)
- Lock (2 members)
- Locking standards (2 members)
- Louisiana (1 member)
- Maine (3 members)
- Maintenance navigation (1 member)
- Maintenance templates (11 members)
- Major revision 1968-07-03 (1 member)
- Major revision 2000/12/29 (2 members)
- Major revision 2000/12/30 (2 members)
- Major revision 8/5/71 (1 member)
- Make Subpage (5 members)
- Mapraid (55 members)
- Mapraid Images (1 member)
- Mapraid JerseyShore images (12 members)
- Mapraid LA images (18 members)
- Mapraid Ohio Image (15 members)
- Mapraid SC Beachcomber (11 members)
- Mapraid images (4 members)
- Maryland (1 member)
- Mass Edits (1 member)
- Massachusetts (2 members)
- Mathematical function templates (1 member)
- Mbox templates (13 members)
- Mega map raid (7 members)
- Mentoring (10 members)
- Michigan (2 members)
- Mid Atlantic (5 members)
- Minnesota (1 member)
- Missing Documentation (0 members)
- Missing documentation (0 members)
- Missing template documentation (32 members)
- Mississippi (1 member)
- Missouri (0 members)
- Montana (1 member)
- Move to new Mbox format (1 member)
- Namespace manipulation templates (1 member)
- Navbox (1 member)
- Navbox (navigational) templates (1 member)
- Navboxes (1 member)
- Navigation templates (1 member)
- Navigational boxes (1 member)
- Nearly orphaned pages (0 members)
- Nebraska (1 member)
- NeedPage (2 members)
- Need to move to Main NS (0 members)
- Nevada (2 members)
- New (41 members)
- New England (0 members)
- New Hampshire (0 members)
- New Jersey (3 members)
- New Mexico (1 member)
- New Road Layer (35 members)
- New York (8 members)
- Node (4 members)
- Noindexed pages (13 members)
- North Carolina (4 members)
- North Dakota (1 member)
- Northern Mariana Islands (1 member)
- Notable revision 2000/3/21 (2 members)
- Notable revision 2015/2/4 (1 member)
- Notable revision 9/13/90 (1 member)
- Obsolete (90 members)
- Ohio (0 members)
- Oklahoma (1 member)
- Oregon (2 members)
- Page-section templates (1 member)
- Page formatting templates (6 members)
- Page message templates (2 members)
- Pages Needing Attention (45 members)
- Pages using deprecated source tags (1 member)
- Pages using duplicate arguments in template calls (13 members)
- Pages where expansion depth is exceeded (484 members)
- Pages which use = as a template (78 members)
- Pages with TemplateStyles errors (4 members)
- Pages with broken file links (56 members)
- Pages with ignored display titles (4 members)
- Pages with incorrect protection templates (4 members)
- Pages with template loops (5 members)
- Parking Lot (1 member)
- Parking Lot Road (3 members)
- Pennsylvania (3 members)
- PesachZ (1 member)
- Place (7 members)
- Place templates (0 members)
- Placeholder templates (0 members)
- Portal (3 members)
- Portal templates (2 members)
- Positioning templates (1 member)
- Potentially outdated (1 member)