- Morgan Heights
- Morrison
- Mosca
- Moseley
- Mount Crested Butte
- Mount Harris
- Mount Lincoln
- Mount Massive Lakes
- Mount Olivet
- Mount Pearl
- Mount Vernon Club Place
- Mountain Meadow Heights
- Mountain Meadows
- Mountain View
- Mountain View
- Mountain View
- Mountain Village
- Muleshoe
- Mulford
- Mumper Corner
- Murray Place
- Mystic