Rattlesnake Island refers, variously, to the following places:

• Rattlesnake Island (Clear Lake), in Lake County, California
• A previous name for Terminal Island, in Los Angeles County, California
• Rattlesnake Island (New Hampshire), in Lake Winnipesaukee
• Rattlesnake Island (Lake Erie), in Ohio

• Rattlesnake Island (Okanagan Lake), in British Columbia

• Rattlesnake Island (Queensland), in Halifax Bay, used for bombing practice

This disambiguation page lists articles about distinct geographical locations with the same name.
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