Shag Island

Shag Island may refer to:


 * Shag Island (South Australia), South Australia
 * Shag Reef, Tasmania, Australia
 * Tarahiki Island, also known as Shag Island, Hauraki Gulf, New Zealand
 * Shag Islands, Newfoundland, Canada
 * Shag Islet, a small island 10 km north of Heard Island.