Falgortrevy is a townland lying within the Civil parishes in Ireland of Maghera, County Londonderry, Northern Ireland. It lies on the western boundary of the parish and is divided into two portions; Falgortrevy and Falgortrevy, separated by small portions of the townlands of Craigadick and Tullyheran. The detached portion is also bounded by the townlands of Craigmore and Tirnony, whilst the main portion is also bounded by the townlands of Ballynahone Beg and Fallagloon. It wasn't apportioned to any of the London livery companies, being kept as church lands.