WSSU (88.5 MHz) is an FM radio station licensed to Superior, Wisconsin, and serving the Duluth/Superior area.

WSSU also broadcasts local news and programming from studios in the Holden Fine and Applied Arts Center at the University of Wisconsin-Superior.

The WSSU call letters had originally been on sister Ideas Network station KUWS from its sign-on in 1966 until 1988.

From 1989 to 1995, WSSU was used by a Springfield, IL public radio station which was formerly WSSR and later WUIS.

This article about a radio station in Wisconsin is a stub.