- Mather Island
- Madawaska Maliseet First Nation
- Martin Siding
- Miller Line Cache
- Montagne-de-la-Croix
- Montagne-des-Roy
- Montagne-des-Therrien
- Moulin-Morneault
- McAdam
- Meductic
- Memramcook
- Miramichi
- Moncton
- Manuels
- Maple Glen
- McGraw Brook
- McKendrick Lake
- McNamee
- Millbank
- Moorefield
- Morrison Cove
- Malauze
- Maltais
- Mann Mountain Settlement
- Mann Siding
- Maple Green
- McKendrick
- McLeods
- McNeish
- Menneval