Alexander Island (disambiguation)

Alexander Island is the largest island in Antarctica.

Alexander Island may also refer to:
 * Alexander Island (Nunavut)
 * Alexander Island (Collie River), an island in the Collie River, Western Australia
 * Alexander Island (Fitzroy River), an island in the Fitzroy River, Western Australia
 * Alexander Island (Houtman Abrolhos), an island in the Houtman Abrolhos, Western Australia
 * Rakahanga, formerly called Alexander Island in the Cook Islands
 * Alexander Island (Texas) in Houston Texas
 * Alexander Islands, in the Russian Arctic