Spider Island is an uninhabited island in Lake Michigan.

It is located in Ellison Bay, in the town of Liberty Grove, Wisconsin.

[1][2] The Gravel Island National Wildlife Refuge is made up of Spider Island, and nearby Gravel Island.

[3] At 23 acres (9.3 ha) it is the larger of the two islands.

This article about a location in Door County, Wisconsin is a stub.