Monkstown (Irish: Baile na Manach), historically known as Carrickbrennan (Irish: Carraig Bhraonáin), is an area in south Dublin, located in Dún Laoghaire–Rathdown County, Ireland. It is on the coast, between Blackrock and Dún Laoghaire. The DART stations of Seapoint and Salthill and Monkstown serve the area.The lands of the Carrickbrennan estate form the greater part of the civil parish of Monkstown.Monkstown is part of the Dáil Éireann constituency of Dún Laoghaire.