The Bojana or Buna ( or Buna; Montenegrin and Serbian: Бојана, Bojana) is a 41 km long river in Albania and Montenegro which flows both into the Adriatic Sea. An outflow of Lake Skadar, measured from the source of the lake's longest tributary, the Morača, the Morača-Lake Skadar- Bojana system is 183 km long.