Ostren (Macedonian: Острени/Ostreni) is a former municipality in the Dibër County, eastern Albania.

Macedonian language courses operate in Ostren to cater for the villages in which Macedonian-speakers form a majority.

[3] Ostren is locally known for the activist Sadik Elez Koçi[4][circular reference], who participated in different important Albanian meetings like the Congress of Manastir and created warbands during the Albanian rebellions, firstly against the Ottoman Empire and then against Bulgaria during the World War I.

[7][8] Okshtun i Madh, Okshtun i Vogël are inhabited by an Albanian population, and Tërbaç has some Torbeš residing there while Pasinkë, Ostren i Madh and Ostren i Vogël are inhabited by an Albanian population that dominates demographically in the villages that also contain significant populations of Torbeš and Orthodox Macedonians.

Haxhi Pirushi, president of the association "Prosperitet Gollo Borda" works on preserving the traditions of the Bulgarian minority in Albania.