The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 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 (40 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)