Killiney (Irish: Cill Iníon Léinín, meaning “Church of the Daughters of Léinín”) is an affluent seaside resort and suburb in Dún Laoghaire–Rathdown, Ireland. It lies south of neighbouring Dalkey, and north of Shankill. The place grew around 11th century Killiney Church, and became a popular seaside resort in the 19th century. It is part of the Dáil Éireann constituency of Dún Laoghaire.

Killiney Hill Park was opened in 1887 as Victoria Hill, in honour of Queen Victoria’s 50 years on the British throne. The park has views of Dublin Bay, Killiney Bay, Bray Head and the mountain of Great Sugar Loaf (506 m), stretching from the Wicklow Mountains right across to Howth Head. The Park’s topography is steep, and its highest point, at the obelisk, is 170 metres above sea level.[citation needed]