Tetlin (Teełąy[3] in Upper Tanana Athabascan) is a census-designated place (CDP) in Southeast Fairbanks Census Area, Alaska, United States.

The Refuge 730,000 acres (3,000 km2) includes snowcapped mountains and glacier-fed rivers, forests and treeless tundra, and an abundance of wetlands.

Tetlin Wildlife Refuge produces up to 1,000,000 ducklings a year, and it is home to 186 or more species of birds.

This upper Tanana Valley has been called the "Tetlin Passage" because it serves as a major migratory route for birds traveling to and from Canada, the Lower 48 and both Central and South America.

Dall Sheep dot the higher slopes while moose feed upon the tender new growth that springs up in the wake of frequent lightning-caused fires.

Wolves, grizzly, black bears and many members of three different caribou herds range over the refuge.

Two of the six known humpback whitefish spawning areas of the Yukon River drainage are located within the refuge.

Arctic Grayling, Northern Pike and burbot are also found in the refuge's many streams and lakes.

The semi-nomadic Athabascan Indians have historically lived in this area, moving with the seasons between several hunting and fishing camps.

When the Alaska Native Claims Settlement Act(ANCSA) was passed in 1971, the reserve was revoked.