Clark Island

Clark Island or Clarke Island may refer to:

Australia

 * Clark Island (New South Wales), an island in Sydney Harbour
 * Clarke Island (Tasmania), an island of the Furneaux Group between Tasmania and mainland Australia

North America

 * Clark Island (Nunavut)
 * Clark Island (Washington), one of the San Juan Islands of Washington State
 * Clark's Island in Plymouth, Massachusetts

Elsewhere

 * Clark Island (Antarctica)