Killowen (from Irish Cill Eoghain 'Eoghan's church', now spelt Cill Eoin), alternatively spelt Cill Abhainn [1] is a small village in County Down, Northern Ireland. It is near Rostrevor and on the shore of Carlingford Lough. In the 2001 Census it had a population of 159 people. It lies within the Newry and Mourne District Council area.