- Millicent Cross Roads
- Milltown
- Moatfield Cross Roads
- Moone
- Mooney’s Bridge
- Morristown Lattin
- Morristown Upper
- Moygaddy
- Moyvally
- Mucklon
- Mullaboden
- Mullamast Cross Roads
- Mullycagh
- Mylerstown
- Mylerstown Cross Roads
- Mylerstown Cross Roads
- Maddockstown
- Mallardstown
- Massford Bridge
- Maudlin
- Meallaghmore
- Milepost Village
- Milltown
- Milltown Cross Roads
- Mohil
- Molum
- Monadubbaun
- Monasilloge
- Moneenroe
- Monroe