Killagh is a civil parish in County Westmeath, Ireland. It is located about east–north–east of Mullingar.
Killagh is one of 7 civil parishes in the barony of Delvin in the province of Leinster. The civil parish covers .
Killagh civil parish comprises six townlands, and the neighbouring civil parishes include: Killulagh to the north, Killucan to the south and Rathconnell (barony of Moyashel and Magheradernon) to the west.Killagh civil parish The Placename Database of Ireland Retrieved on 8 July 2015.Killagh civil parish townlands.ie Retrieved on 8 July 2015.Killagh civil parish The IreAtlas Townland Database. Retrieved on 8 July 2015
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