Ardmoneen is bounded on the north by Moher (Drumreilly) townland, on the west by Doon (Drumreilly) and Garryfliugh townlands and on the east by Drumderg townland. Its chief geographical features are Sliabh an Iarainn mountain on whose eastern slope it lies, reaching a height of 1,295 feet, forestry plantations, a wood, waterfalls, mountain streams, spring wells and dug wells. Ardmoneen is traversed by minor public roads and rural lanes. The townland covers 378 statute acres.