Ahtna or Ahtena (/ˈɑːtnə/, from At Na "Copper River") is the Na-Dené language of the Ahtna ethnic group of the Copper River area of Alaska. The language is also known as Copper River or Mednovskiy. The Ahtna language consists of four different dialects: Upper, Central, Lower, and Western. Three of the four are still spoken today. Ahtna is closely related to Dena'ina. The similar name Atnah occurs in the journals of Simon Fraser and other early European diarists in what is now British Columbia as a reference to the Tsilhqot'in people, another Northern Athapaskan group.