Northern Epirus is a term used to refer to those parts of the historical region of Epirus, in the western Balkans, which today are part of Albania. The term is used mostly by Greeks and is associated with the existence of a substantial ethnic Greek minority in the region. It also has connotations with irredentist political claims on the territory on the grounds that it was held by Greece and in 1914 was declared an independent state by the local Greeks against annexation to the newly founded Albanian principality. The term is typically rejected by most Albanians for its irredentist associations.

Epirus is a geographical and historical region in southeastern Europe, now shared between Greece and Albania. It lies between the Pindus Mountains and the Ionian Sea, stretching from the Bay of Vlorë and the Acroceraunian Mountains in the north to the Ambracian Gulf and the ruined Roman city of Nicopolis in the south. It is currently divided between the region of Epirus in northwestern Greece and the counties of Gjirokastër and Vlorë in southern Albania. The largest city in Epirus is Ioannina, seat of the Greek region of Epirus, with Gjirokastër the largest city in the Albanian part of Epirus.