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