Drumardagh (Irish: Droim Ardagh) is a townland in the east of County Donegal in Ulster, Ireland. The townland is located approximately 5 kilometres (around 3 miles) east of Letterkenny, being in the Laggan district of East Donegal. The townland is just outside the village of Manorcunningham. The Isle Burn flows along the eastern boundary of the townland. The Irish name means 'the Ridge (drum) on the High Place (ardagh)', and it is this elevation that gives Drumardagh its commanding views over Lough Swilly, from Glenswilly to Inch Island, and beyond to the peaks of the Fanad and Inishowen peninsulae.