The Cape Denbigh Flint Complex, a prehistoric tool industry at Iyatayet, along Norton Sound on the west coast of Alaska, initiates the development of one the earliest Eskimo cultures in Alaska, when its members begin the transition from inland hunting to coastal life about 3000 BCE at Cape Krusenstern, north of Kotzebue in northwest Alaska.

Characterized by small, well-made flint implements, including tiny blades, or microliths, some, the burins (engraving tools) in particular, show affinities with late Paleolithic and Mesolithic industries of the Old World.

Others are more typical of flint-working techniques of North American Paleo-Indian groups and reflect the adaptation to coastal life.

The Denbigh Flint Complex is probably a late offshoot of pre-Eskimo tool industries brought from Siberia to Alaska during the last period of the Bering Land Bridge.