Lack (from Irish: An Leac, meaning "the flagstone") is a small village and townland (of 224 acres) in County Fermanagh, Northern Ireland, 5.5km east-north-east of Ederny. It is situated in the civil parish of Magheraculmoney and the historic barony of Lurg. It had a population of 111 people (50 households) in the 2011 Census. (2001 Census: 114 people).