Chapelizod (Irish: Séipéal Iosóid, meaning “Iseult’s Chapel”) is a village preserved within the city of Dublin, Ireland. It lies in the wooded valley of the River Liffey, near the Strawberry Beds and the Phoenix Park. The village is associated with Iseult of Ireland and the location of Iseult’s chapel. Chapelizod is under the administration of Dublin City Council. Chapelizod is also a parish in the Blanchardstown deanery of the Roman Catholic Archdiocese of Dublin.

The civil parish of Chapelizod is part of the barony of Castleknock. The barony is one of seven and a half baronies that comprised the traditional county of Dublin. The parish stretches from Cabra to Blanchardstown (from east to west) and from Finglas to Chapelizod (from north to south).[2]