M
- (Wexford) Mulrankin
- (Wexford) Mullanour
- (Wexford) Mervyn
- (Wexford) Muchwood Cross Roads
- (Kilkenny) Milltown
- (Kilkenny) Mullennakill
- (Kilkenny) Mount Garrett Bridge
- (Kilkenny) Monasilloge
- (Kilkenny) Munginacody
- (Kilkenny) Milltown Cross Roads
- (Kilkenny) Mohil
- (Kilkenny) Muckalee
- (Kilkenny) Maudlin
- (Kilkenny) Moneenroe
- (Kilkenny) Massford Bridge
- (Laois) Moyadd Bridge
- (Laois) Moscow
- (Laois) Moore’s Cross Roads
- (Laois) Mayo
- (Laois) Monavea
- (Laois) Mungan
- (Wexford) Meelgarrow
- (Wexford) Monamolin
- (Wexford) Moneytucker
- (County Carlow) Marley
- (County Carlow) Mullannagaun
- (Wexford) Mocurry Cross Roads
- (Wexford) Mocurry Bridge
- (Wexford) Marley Bridge
- (Wexford) Marshalstown