Drumardagh (Irish: Droim Ardagh) is a residential townland, situated approximately 5 kilometres from the town of Letterkenny, in County Donegal, Ireland. 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 peninsulas.