KXFN (1380 AM) is a radio station in St. Louis, Missouri. It is owned by the Lutheran Church – Missouri Synod and airs a simulcast of station KFUO's daytime signal and nighttime live stream. The station has a colorful history as the Top 40 station KWK.
KXFN employs separate daytime and nighttime transmitter sites; the daytime transmitter is located on Chouteau Island near Granite City, Illinois, while the nighttime site is located further south near Dupo, Illinois.