Castles in the Republic of Ireland is a link page for any castle in the Republic of Ireland.
See: List of castles, Castles in the United Kingdom, Abbeys and priories in the Republic of Ireland, Historic houses in the Republic of Ireland, Conservation in the Republic of Ireland
County Clare
- Bunratty Castle
- Knappogue Castle
- Leamaneagh Castle
- Blackrock Castle
- Blarney Castle
- Carrignacurra Castle
- Desmond Castle, Kinsale
- Donegal Castle
- Glenveagh Castle
- Greencastle
- Dublin Castle
- Howth Castle
- Malahide Castle
- Aughnanure Castle
- Dunguaire Castle
- Lynch's Castle
- Portumna Castle
- Ross Castle
- Black Castle
- Bourchier's Castle
- Castle Matrix
- Desmond Castle
- Glin Castle
- King John's Castle
- Slane Castle
- Trim Castle
- Birr Castle
- Roscommon Castle
- Parke's Castle
- Cahir Castle
- Ormond Castle
- Roscrea Castle
- Athlone Castle
- Ballyhack Castle
- Enniscorthy Castle
- Johnstown Castle
- Rathlannon Castle