L
- (Clare) Latoon Bridge
- (Clare) Liscullaun
- (Clare) Liskenny
- (Clare) Lifford
- (Clare) Lissycasey
- (Clare) Lower Ballycotteen
- (Clare) Luagh
- (Clare) Lismorahaun
- (Clare) Leana
- (Clare) Leaghort
- (Clare) Lecarrow
- (Clare) Loughamiddaun
- (Clare) Lannaght
- (County Tipperary) Lisduff
- (County Tipperary) Luska
- (County Tipperary) Loughkeen
- (County Tipperary) Long Island
- (County Tipperary) Lake Village
- (County Tipperary) Lelagh
- (Limerick City and County Council) Lisnagry
- (Clare) Liscannor
- (County Cork) Lyre
- (County Tipperary) Lisronagh
- (County Waterford) Lemybrien
- (County Cork) Liscarroll
- (County Cork) Leap
- (County Tipperary) Littleton
- (Kerry) Lixnaw
- (Clare) Lehinch
- (Clare) Lisdoonvarna