Magee of Donegal is a clothing manufacturer and retailer based in Donegal, a town located in the south of County Donegal in the Province of Ulster in Ireland. The company is best known for their world-famous Donegal tweed, but also manufactures items from linen, wool and other materials. The company's origins trace back to 1866, when the company's founder, John Magee, opened a clothing shop in Donegal Town. The company has supplied cloth for the uniforms of Ireland's state airline, Aer Lingus.