WSIU (91.9 FM, "Powered by You") is a radio station broadcasting a news/talk/information and classical music format.

The station is currently owned by Southern Illinois University Carbondale and features programming from American Public Media, National Public Radio, and Public Radio Exchange.

[4] WSIU's programming is also heard on WUSI 90.3 FM in Olney, Illinois and WVSI 88.9 FM in Mount Vernon, Illinois.

WSIU first took to the air on September 15, 1958, as WSRV (Southern's Radio Voice).

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