The Nivkh (also Nivkhs, Nivkhi, or Gilyak; ethnonym: Нивхгу "Nʼivxgu" (Amur) or Ниғвңгун "Nʼiɣvŋgun" (E. Sakhalin) 'the people') are an indigenous ethnic group inhabiting the northern half of Sakhalin Island and the lower Amur River and coast on the adjacent Russian mainland and historically parts of Manchuria.