WEIU (88.9 FM) is a 4,000 watt effective radiated power radio station in Charleston, Illinois. Owned by Eastern Illinois University, it is a sister station to campus television station WEIU-TV. The two stations share studios on the EIU campus in Charleston. The station licensee, Eastern Illinois University is authorized by the Federal Communications Commission. The station first signed on in 1982.

• Hit Mix 88.9
• The Odyssey - EIU's Online Podcast Station
• Facility details for Facility ID 18299 (WEIU) in the FCC Licensing and Management System
• WEIU in Nielsen Audio's FM station database

39°28′43″N 88°10′21″W / 39.4787°N 88.1725°W / 39.4787; -88.1725