Killiney (Irish: Cill Iníon Léinín, meaning "Church of the Daughters of Léinín") is a seaside resort and suburb of Dublin in south County Dublin, Ireland. It is within the administrative area of Dún Laoghaire-Rathdown County. The area is by the coast, south of neighbouring Dalkey, and north to Shankill area in the most southern outskirt of Dublin.