Rattlesnake Island refers, variously, to the following places:

His team focused their investigation around Rattlesnake Island where many sightings have taken place.

Rattlesnake Island, the other islet in the area, became Terminal Island.

Evidence of this has been found at nearby Borax Lake and on Rattlesnake Island in the lake's south arm.

Rattlesnake Island is the highest (in elevation) island on Lake Winnipesaukee.

Currently they are attempting to regain ownership of Rattlesnake Island near their reservation, where they had held ceremonies for centuries.

For other places with the same name, see Rattlesnake Island (disambiguation).

Legend has it that Rattlesnake Island is the home of Ogopogo, the lake's legendary monster.

In 2003, a wildfire started in the park near Rattlesnake Island and spread quickly, eventually burning most of the park.

Rattlesnake Island then became a private island that was re-sold in 1992 for $4.6 million.