Lamarck Island may refer to:
- Lamarck Island (Antarctica) 66°40′S 140°2′E / 66.667°S 140.033°E
- Lamarck Island, Western Australia 14°47′03″S 125°01′30″E / 14.78417°S 125.02500°E
This disambiguation page lists articles about distinct geographical locations with the same name.
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