Croithlí or Croichshlí is a village in the Gaeltacht parishes and traditional districts of Gweedore and The Rosses in the west of County Donegal in Ulster, the northern province in Ireland. The two 'districts' are separated by the Crolly River. It has one convenience shop/restaurant and petrol station and one public house, Páidí Óg's. Crolly is located in two baronies: the Gweedore part of the village is in the Barony of Kilmacrenan, while The Rosses part of the village is in the Barony of Boylagh, the Crolly River being the boundary between the two baronies.