- Muineagh
- Mullagharry
- Mullaghnadreesruhan
- Mullan
- Mullanacross
- Mullanasole
- Mullanmore
- Mullenieran Bridge
- Mullingar
- Mulnamin
- Muntermellan
- Murlas Bridge
- Magheracloone
- Magherarny Cross Roads
- Magherashaghry
- Magoney Bridge
- McNally’s Cross Roads
- Mill Town
- Milltown
- Monalia
- Monneill
- Moy Bridge
- Moyle
- Moylemuck
- Moyles
- Moyles
- Mullabryan
- Mullaloughan
- Mullan
- Mullanacross