Ballyfarnon is the most northerly village of Roscommon being situated in North West Roscommon on the Sligo/Cavan road. Built on the River Feorish at the foot of Arigna Mountain, it lies between Loughs Skean and Meelagh with Lake Arrow, Lough Allen, Lough Bo and Lough-na-Sool nearby. A memorial to a local musician and songwriter, Josie McDermott, is the focal point of the village centre, and a memorial garden on the Feorish bank is dedicated to all who attended fair days in the village for centuries, and who worked in Arigna Coal Mines overlooking the village.
Kilronan Castle Hotel can be seen on walks to Lough Meelagh, the former home of the Earl of Kingston, and Alderford House, the last home of Turlough O'Carolan, is adjacent to the village. Turlough O'Carolan is buried in nearby Kilronan Abbey.