Killiney is an affluent suburb in the southern coastal part of County Dublin, Ireland. It lies south of Dalkey, east and northeast of Ballybrack and Sallynoggin and north of Shankill. The place grew around the 11th century Killiney Church, and became a popular seaside resort in the 19th century. The area is notable for some famous residents, including two members of U2, and Enya.