- McBean
- McCourts Corner
- McKee
- McMasterville
- McWatters
- Meigs Corners
- Melboro
- Melbourne Ridge
- Mellon
- Messines
- Metabetchouan-Lac-a-la-Croix
- Métis-sur-Mer
- Micoua
- Middle Bay
- Milan
- Milby
- Mille-Isles
- Millington
- Millstream
- Mine-de-Mica
- Mingan
- Minton
- Miquelon
- Miron
- Mistassini
- Moe's River
- Moffet
- Molson Landing
- Monet
- Monnoir