- Madeline Island
- Manitou Island
- Michigan Island
- Middleport
- Minersville
- McHenry Island
- Muskeg
- Mill Center
- Morrison
- Maple Heights
- Marshland
- Maxville
- Middle Island (historical)
- Misha Mokwa
- Montana
- Muench Island
- Maple Hill
- Marcellon
- Montgomeryville
- Madison Mobile Home Park
- Marxville
- Mendota Beach
- Middleton Junction
- Montrose
- Mosquito Island
- Mount Vernon
- Majestic Island
- McFetridge Island
- Middle Island
- Millers Island