- Maas
- Maas Lower
- Maas Upper
- Madabawn Bridge
- Maghera
- Magherabane
- Magherabeg
- Magheraboy
- Magheraboy
- Magheracloone
- Magheradrumman
- Magheralahan
- Magheramore
- Magherarny Cross Roads
- Magherashaghry
- Magherintemple
- Maghery
- Magoney Bridge
- Malin
- Malin Beg
- Malin More
- Mallaghanny
- Manner’s Town
- Manorcunningham
- Marble Hill
- Masiness
- McNally’s Cross Roads
- McShane’s Bridge
- Meenachallow
- Meenaclady