Copper Island is a local name for the northern part of the Keweenaw Peninsula in northern Michigan, United States.

Copper Island may also refer to:

Copper Island, an island in Lake Superior near Rossport, Ontario, where the Gunilda ran aground Medny Island, an island in the Bering Sea, part of Commander Islands Copper Island Aleut, a dialect of the Aleut language an island in Shuswap Lake, British Columbia, Canada one of the Wadham Islands of Newfoundland and Labrador, Canada

See also Cooper Island (South Georgia)