Coordinates: 54°45′43″N 7°14′46″W / 54.762°N 7.246°W Landahaussy or Landahussy (possibly from Irish: Lann Uí Eoghasa, meaning "Ó Eoghasa's church") is a small village and townland near Plumbridge in County Tyrone, Northern Ireland. It is within the Strabane District Council area.
It is the birthplace of mathematician James MacCullagh.