L
- (Wexford) Limerick
- (Kildare) Leinster Bridge
- (Wicklow) Lyregore
- (Wexford) Loggan Lower
- (Wexford) Loberduff Bridge
- (Wexford) Loggan Bridge
- (Wexford) Linnanagh
- (Wexford) Laraheenhill
- (Wexford) Laraheen
- (County Carlow) Lucas Bridge
- (Wicklow) Laragh
- (Kildare) Longstone
- (Wexford) Little Saltee
- (Westmeath) Lynnbury
- (Louth) Lurgangreen
- (Kilkenny) Lukeswell
- (Kilkenny) Lughinny
- (Wicklow) Lugglass Upper
- (Wicklow) Lugglass Lower
- (Laois) Luggacurren
- (Meath) Lougher
- (Westmeath) Loughanavally
- (Uíbh Fhailí) Longford
- (Meath) Lobinstown
- (Kilkenny) Listrolin
- (Kilkenny) Listerlin
- (An Longfort) Lisryan
- (Westmeath) Lismoyny
- (Kilkenny) Lisdowney
- (Kilkenny) Licketstown