Piercetown (Irish: Baile Phiarais) is a civil parish in County Westmeath, Ireland. It is located about 18.69 kilometres (12 mi) west–north–west of Mullingar. It was formerly often spelled Pierstown. Piercetown is one of 9 civil parishes in the barony of Rathconrath in the Province of Leinster. The civil parish covers 3,695.8 acres (14.956 km2). Piercetown civil parish comprises 16 townlands: , , , , , , , , , Piercetown, , , , , and .