L
- (An Longfort) Leggah
- (Kildare) Larch Hill
- (Meath) Laracor
- (Wexford) Lady’s Island
- (Wicklow) Lackan
- (Fingal County) Lidoville
- (Wexford) Lewistown
- (Wexford) Loughnageer
- (Wexford) Louggraigue House
- (Wexford) Lookout
- (Wexford) Larkins Cross Roads
- (Wexford) Lough
- (Kilkenny) Legan
- (Kilkenny) Loughboreen
- (Kilkenny) Lisnarinshin
- (Kilkenny) Loan
- (Laois) Leagh
- (Wexford) Lacken
- (County Carlow) Lissalican
- (County Carlow) Lorum
- (County Carlow) Larchville Commons
- (Wicklow) Lumecloon
- (Wexford) Lambstown
- (Wexford) Larken
- (Wexford) Lyrane
- (Wexford) Lackan
- (Wicklow) Lugduff
- (Kilkenny) Lanoge
- (Kilkenny) Lemonstown
- (Kilkenny) Lakyle