The Shumagin Islands is a group of 20 islands south of the mainland of Alaska, at 54°54'–55°20' North 159°15'–160°45' West. The largest islands are Unga Island, Popof Island, and Nagai Island.

The Shumagin Islands were named after one of the sailors on Vitus Bering's 1741 expedition to the arctic seas who died.