- Madabawn Bridge
- Magherintemple
- McShane’s Bridge
- Milltown
- Milltown
- Moher
- Moneensauran
- Moneynure
- Mountnugent
- Mountain Lodge
- Mullagh
- Mullaghoran
- Mully
- Maas
- Maas Lower
- Maas Upper
- Maghera
- Magherabane
- Magherabeg
- Magheraboy
- Magheraboy
- Magheradrumman
- Magheralahan
- Magheramore
- Maghery
- Malin
- Malin Beg
- Malin More
- Mallaghanny
- Manner’s Town