Northern Athabaskan languages

Northern Athabaskan is a geographic sub-grouping of the Athabaskan language family spoken by indigenous peoples in the northern part of North America, particularly in Alaska (Alaskan Athabaskans), Yukon, and the Northwest Territories. The sprachraum of Northern Athabaskan languages spans the interior of Alaska to the Hudson Bay in Canada and from the Arctic Circle to the Canadian-American border. Languages in the group include Dane-zaa, Chipewyan, Babine-Witsuwitʼen, Carrier, and Slavey;. The Northern Athabaskan languages consist of 31 languages that can be divided into seven geographic subgroups.

In at least one Northern Athabaskan language, Slavey, a shift has occurred in the fricative /θ/ to /f/; this is the same sound change found in the Cockney dialect of English.