K
- (Clare) Killeenagh
- (Clare) Killinny
- (Clare) Kilcasheen
- (Clare) Knockroe
- (Clare) Kilnagalliagh
- (County Cork) Knuttery
- (County Cork) Knockyhena
- (Kerry) Knockroe
- (County Cork) Knocknahilan
- (Kerry) Knocknagoshel
- (County Waterford) Knockmahon
- (Kerry) Knockavrogeen
- (Kerry) Knockaunnaglashy
- (Kerry) Knockatooan
- (Limerick City and County Council) Knockatanvally
- (Clare) Knockarradaun West
- (Clare) Knockarradaun East
- (Kerry) Knockanure
- (County Waterford) Knockanore
- (County Cork) Knockanare
- (Clare) Knockalough
- (Limerick City and County Council) Knockainy
- (Limerick City and County Council) Knockaderry
- (Kerry) Knockacappul
- (County Tipperary) Knock
- (Clare) Knock
- (County Cork) Kishkeam
- (County Cork) Kinneigh
- (Limerick City and County Council) Kinard
- (Kerry) Kinard