From Wikipedia, the free encyclopedia
Plum Island may refer to:
- Plum Island (Alaska), an island in Alaska, United States
- Plum Island Bald Eagle Refuge (Illinois), a bald eagle refuge in northeast Illinois
- Plum Island (Massachusetts), an island in Essex County, Massachusetts, United States
- Plum Island (New York), an island near Long Island, New York
- Plum Island (novel), by Long Island author Nelson DeMille
- Plum Island (Wisconsin), an island in Washington Township, Door County, Wisconsin
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