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West Island (Massachusetts), an island in the U.S. state of Massachusetts

West Island, the unofficial name for the western boroughs of the city of Montreal, Quebec, Canada

West Island, Torres Strait, Queensland, Australia

West Island, Cocos (Keeling) Islands, an island and the titular capital of the Cocos (Keeling) Islands, an Australian external territory

Some New Zealanders refer to Australia as the west island of New Zealand