WUIS (91.9 FM), branded on-air as NPR Illinois, is the National Public Radio member station in Springfield, Illinois, United States.

It primarily features National Public Radio news and talk programming.

It operates a full-time satellite, WIPA in Pittsfield, which serves a small portion of the Quincy market.

WUIS originally hit the airwaves on January 3, 1975, as WSSR, operated by what was then Sangamon State University.

It became WSSU in 1989, and adopted its current calls when Sangamon State merged with the University of Illinois system in 1995.