Coa, Northern Ireland is a townland, and hamlet in Mageracross civil parish, County Fermanagh.It is located at 54° 24' 9" N, 7° 33' 58" W and east of the town of Ballinamallard and is 399.11 acres in area. Landmarks include St Marys Church Coa, Cavanalough Glebe and Killee Lough.