 Ballynamaddoo is bounded on the northwest by Gortnavreeghan townland, on the west by Bawnboy townland, on the south by Corrasmongan and Killycrin townlands and on the east by Gowlagh North and Corneen townlands.Its chief geographical features are Slieve Rushen mountain on whose western slope it lies, mountain streams, mountain bogs, forestry plantations and dug wells.It forms part of the Slieve Rushen Bog Natural Heritage Area.