WLSU (88.9 FM) is a radio station licensed to La Crosse, Wisconsin.

The station is part of Wisconsin Public Radio (WPR), and airs WPR's Music Network, consisting of classical music.

WLSU also broadcasts local news and programming from studios in the Whitney Center at the University of Wisconsin-La Crosse.

The station first went on air in 1971,[2] and a year later joined Wisconsin Public Radio.

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