Ballynahone Beg is a townland lying within the civil parish of Maghera, County Londonderry, Northern Ireland. It lies in the south-west of the parish, and is bounded by the townlands of; Ballynahone More, Clooney, Craigadick, Drumballyhagan, Drumballyhagan Clark, Fallagloon, Falgortrevy, Mullagh, and Tobermore. It was not apportioned to any of the London livery companies, being retained as church lands.[1]
The townland in 1926 was part of Maghera district electoral division as part of the Maghera dispensary (registrar's) district of Magherafelt Rural District.[2] As part of Maghera civil parish, Ballynahone Beg also lies within the historic barony of Loughinsholin.