Dalkey may refer to: Dalkey Island off the coast of Ireland Dalkey, a suburb of Dublin in Ireland named for the island Dalkey Atmospheric Railway (1843-1854) Dalkey railway station (1854-1964) Dalkey Hill overlooks the village Dalkey Quarry, disuse granite quarry (1815-1917) Dalkey School Project, a multidenominational school established in 1978 at Glenageary in Ireland Dalkey Book Festival, annual literature festival held in Dalkey, Ireland since 2010 Hundred of Dalkey, a cadastral unit in South Australia, named after the Irish village Dalkey, South Australia, a locality named after the Hundred District Council of Dalkey (1875-1932) Dalkey Archive Press, American publisher founded in 1984 The Dalkey Archive, 1964 novel by Irish writer Flann O'Brien