K
- (Fingal County) Killeek
- (Fingal County) Kilsallaghan
- (Fingal County) Killosseny
- (Fingal County) Kitchenstown
- (Meath) Kiltrough
- (Louth) Keenan’s Cross
- (County Carlow) Killerrig
- (County Carlow) Kilgraney
- (Dún Laoghaire-Rathdown) Kilternan
- (Fingal County) Killsallaghan
- (Meath) Kilbrew
- (Westmeath) Knockmant
- (Westmeath) Kerinstown and Balrowan
- (Westmeath) Killagh
- (Westmeath) Knockbrack
- (Westmeath) Killulagh
- (Westmeath) Kilpatrick
- (Westmeath) Kilcumny
- (Westmeath) Knock Killua
- (Westmeath) Kilrush Lower
- (Westmeath) Kilgar
- (Westmeath) Kilwalter
- (Meath) Knockbrack
- (Meath) Knockmacoony
- (Meath) Keenaghan
- (Meath) Knocklough
- (Meath) Killacroy
- (Meath) Killallon
- (Meath) Knockrath
- (Meath) Kingsmountain