Oldtown (Irish: An Seanbhaile) is a district of Letterkenny, County Donegal, Ireland, in the parish of Conwal and Leck to the south of the River Swilly. As its name suggests, it is the oldest part of Letterkenny—being older than Letterkenny itself—and was the starting point of the area's development. Oldtown has a weak range of essential services, as it is primarily green spaces within housing developments; its residents mostly utilize services in the town centre, rather than Oldtown itself.