The Monasterboice ruins are the remains of an early Christian monastic settlement in County Louth in Ireland, north of Drogheda. The ruins are a national monument of Ireland and also give their name to the local village and to a civil parish of the same name.

County Louth is a coastal county in the Eastern and Midland Region of Ireland, within the province of Leinster. Louth is bordered by the counties of Meath to the south, Monaghan to the west, Armagh to the north and Down to the north-east, across Carlingford Lough. It is the smallest county in Ireland by land area and the 17th most populous, with just over 139,100 residents as of 2022. The county is named after the village of Louth. Louth County Council is the local authority for the county.