Kilcoo (from Irish: Cill Chua, meaning 'church of mourning' – from the legend that Saint Patrick's body stayed there while on its way to Downpatrick to be buried) is a small village and civil parish in County Down, Northern Ireland. It lies between Rathfriland and Castlewellan and is within the Newry, Mourne and Down District Council area. Kilcoo had a population 1415 people in the 2001 Census.