- Middleton Junction
- Midway
- Mifflin
- Mikana
- Milan
- Miles
- Milford
- Mill Center
- Mill Creek Community
- Milladore
- Millard
- Millers Island
- Millhome
- Millston
- Milltown
- Millville
- Milton
- Milton Junction
- Milwaukee
- Minawa Beach
- Mindoro
- Mineral Point
- Mineral Point
- Minersville
- Minnesota Junction
- Minocqua
- Minong
- Miscauno Island
- Misha Mokwa
- Mishicot