Muff is a village in Co Donegal. It is near the mouth of the River Foyle, where it flows into Lough Foyle, and sits at the border between the Republic of Ireland and Northern Ireland. The village of Culmore and the city of Derry are to the south. Local amenities include three shop/filling stations, shops, an amusements, a butchers, two hairdressers, two take aways, a pharmacy and a selection of pubs. The village has a festival each summer during the first week of August which céilithe, competitions, street partying, parades, amusements, night-time entertainment and live performances. There is a GAA and soccer club in the village, as well as a diving club.