Puffin Island (Iñupiaq: Aġviat) is a rocky islet in the Kotzebue Sound, Alaska.

Puffin Island is a steep rock and, though much smaller than Chamisso Island, it has many more nesting birds on its surface, especially horned puffins, black-legged kittiwakes, and thick-billed murres which build their nests on the steep-walled cliffs that fall into Spafarief Bay.

With the exception of birds and the occasional fox that crosses frozen sea in winter, nothing lives on the islands.

[1] Both islands are part of the Chamisso Wilderness in the Chukchi Sea unit of the Alaska Maritime National Wildlife Refuge.

He wrote, "Detached from Chamisso there is a steep rock which by way of distinction we named Puffin Island."