Killylea (/kɪliːˈleɪ/; from Irish Coillidh Léith, meaning "grey forest") is a small village and townland in Northern Ireland. It is within the Armagh City and District Council area. The village is set on a hill, with St Mark’s Church of Ireland, built in 1832, at its summit. The village lies to the west of County Armagh, and is close to the neighbouring counties of County Tyrone and County Monaghan which is in the Republic of Ireland.