- Murphy
- Myersville
- Murdo
- Madsen Beach
- Manhattan Island
- Mud Island
- Motley Island
- Manderson-White Horse Creek
- Mayfield
- Midway
- Marion Island (historical)
- Mahto
- Manderson
- Mansfield
- Marcus
- Maurine
- Meadow
- Meckling
- Milesville
- Millboro
- Mina
- Miranda
- Mission Ridge
- Mosher
- Mud Butte
- Mystic
- Mission Island (historical)
- McCook Lake
- McKays Trailer Court
- Midway