K
- (Sligo) Knockatober
- (Sligo) Knocknageeha
- (Sligo) Killala
- (Sligo) Kinkillew
- (Sligo) Knockroe
- (County Leitrim) Kilmore
- (County Leitrim) Kinnara Glebe
- (County Leitrim) Killenna Glebe
- (County Leitrim) Kilcoosy
- (Sligo) Killadoon Cross Roads
- (Sligo) Killadoon
- (Sligo) Knockaun
- (Sligo) Kiltylough
- (Sligo) Knockbreenagher
- (Sligo) Knockmore
- (Sligo) Knockacappul
- (Sligo) Knockroe
- (County Leitrim) Killaleen
- (County Leitrim) Killananima
- (County Leitrim) Killeen
- (County Leitrim) Kilcoon
- (County Leitrim) Knocknacoska
- (Roscommon) Kilmacroy
- (Roscommon) Knockadrehid
- (County Galway) Kylesa
- (County Galway) Kylemore
- (County Galway) Kylebrack
- (Mayo County) Knockmore
- (County Galway) Knockferry
- (Mayo County) Knappagh