The Hill of Uisneach or Ushnagh is a hill and ancient ceremonial site in the barony of Rathconrath in County Westmeath, Ireland. It is a protected national monument. It consists of numerous monuments and earthworks—prehistoric and medieval—including a probable megalithic tomb, burial mounds, enclosures, standing stones, holy wells and a medieval road. Uisneach is near the geographical centre of Ireland, and in Irish mythology it is deemed to be the symbolic and sacred centre of the island. It was said to be the burial place of the mythical Tuatha Dé Danann, and a place of assembly associated with the druids and the festival of Bealtaine.

County Westmeath is a county in Ireland. It is in the province of Leinster and is part of the Eastern and Midland Region. It formed part of the historic Kingdom of Meath, which was named Mide because the kingdom was located in the geographical centre of Ireland. Westmeath County Council is the administrative body for the county, and the county town is Mullingar. At the 2022 census, the population of the county was 95,840.