Letterbreen (from Irish: Leitir Bhruín, meaning "Bruín's hillside") is a hamlet in County Fermanagh, Northern Ireland. It is 5 miles southwest of Enniskillen on the main route to Sligo. It lies in the foothills of Belmore Mountain.The hamlet has a Methodist church, a Church of Ireland church hall, a shop, a post office, a pub and several houses.